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Warden SJ, Dick A, Simon JE, Manini TM, Russ DW, Lyssikatos C, Clark LA, Clark BC. Fracture discrimination capability of ulnar flexural rigidity measured via Cortical Bone Mechanics Technology: study protocol for The STRONGER Study. JBMR Plus 2024; 8:ziad002. [PMID: 38690126 PMCID: PMC11059995 DOI: 10.1093/jbmrpl/ziad002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/02/2024] Open
Abstract
Osteoporosis is characterized by low bone mass and structural deterioration of bone tissue, which leads to bone fragility (ie, weakness) and an increased risk for fracture. The current standard for assessing bone health and diagnosing osteoporosis is DXA, which quantifies areal BMD, typically at the hip and spine. However, DXA-derived BMD assesses only one component of bone health and is notably limited in evaluating the bone strength, a critical factor in fracture resistance. Although multifrequency vibration analysis can quickly and painlessly assay bone strength, there has been limited success in advancing a device of this nature. Recent progress has resulted in the development of Cortical Bone Mechanics Technology (CBMT), which conducts a dynamic 3-point bending test to assess the flexural rigidity (EI) of ulnar cortical bone. Data indicate that ulnar EI accurately estimates ulnar whole bone strength and provides unique and independent information about cortical bone compared to DXA-derived BMD. Consequently, CBMT has the potential to address a critical unmet need: Better identification of patients with diminished bone strength who are at high risk of experiencing a fragility fracture. However, the clinical utility of CBMT-derived EI has not yet been demonstrated. We have designed a clinical study to assess the accuracy of CBMT-derived ulnar EI in discriminating post-menopausal women who have suffered a fragility fracture from those who have not. These data will be compared to DXA-derived peripheral and central measures of BMD obtained from the same subjects. In this article, we describe the study protocol for this multi-center fracture discrimination study (The STRONGER Study).
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Affiliation(s)
- Stuart J Warden
- Department of Physical Therapy, School of Health and Human Sciences, Indiana University, Indianapolis, IN, 46202, United States
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, 46202, United States
| | - Andrew Dick
- OsteoDx Inc., Athens, OH, 45701, United States
| | - Janet E Simon
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH, 45701, United States
- School of Applied Health and Wellness, Ohio University, Athens, OH, 45701, United States
| | - Todd M Manini
- Institute on Aging, University of Florida, Gainesville, FL, 32611, United States
| | - David W Russ
- School of Physical Therapy and Rehabilitation, University of South Florida, Tampa, FL, 33620, United States
| | - Charalampos Lyssikatos
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, 46202, United States
| | - Leatha A Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH, 45701, United States
- Department of Biomedical Sciences, Ohio University, Athens, OH, 45701, United States
| | - Brian C Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH, 45701, United States
- Department of Biomedical Sciences, Ohio University, Athens, OH, 45701, United States
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Camara M, Lima KC, Freire YA, Souto GC, Macêdo GAD, Silva RDM, Cabral LLP, Browne RAV, Lemos TMAM, Waters DL, Vieira ER, Manini TM, Costa EC. Independent and joint associations of cardiorespiratory fitness and lower-limb muscle strength with cardiometabolic risk in older adults. PLoS One 2023; 18:e0292957. [PMID: 37871003 PMCID: PMC10593220 DOI: 10.1371/journal.pone.0292957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/03/2023] [Indexed: 10/25/2023] Open
Abstract
The aim of this study was to investigate the independent and joint associations of low cardiorespiratory fitness and lower-limb muscle strength with cardiometabolic risk in older adults. A total of 360 community-dwelling older adults aged 60-80 years participated in this cross-sectional study. Cardiometabolic risk was based on the diagnosis of Metabolic Syndrome and poor Ideal Cardiovascular Health according to the American Heart Association guidelines. Cardiorespiratory fitness and lower-limb muscle strength were estimated using the six-minute walk and the 30-second chair stand tests, respectively. Participants in the 20th percentile were defined as having low cardiorespiratory fitness and lower-limb muscle strength. Poisson's regression was used to determine the prevalence ratio (PR) and 95% confidence intervals (CI) of Metabolic Syndrome and poor Ideal Cardiovascular Health. Participants with low cardiorespiratory fitness alone and combined with low lower-limb muscle strength were similarly associated with a higher risk for Metabolic Syndrome (PR 1.27, 95% CI 1.09-1.48, and PR 1.32, 95% CI 1.10-1.58, respectively), and poor Ideal Cardiovascular Health (PR 1.76, 95% CI 1.25-2.47, and PR 1.65, 95% CI 1.19-2.28, respectively). Low lower-limb muscle strength alone was not associated with a higher risk for either Metabolic Syndrome or poor Ideal Cardiovascular Health (PR 1.23, 95% CI 0.81-1.87, and PR 1.11, 95% CI 0.89-1.37, respectively). Low cardiorespiratory fitness alone or combined with low lower-limb muscle strength, but not low lower-limb muscle strength alone, was associated with a higher cardiometabolic risk in older adults. The assessment of physical fitness may be a "window of opportunity" to identify youngest-old adults with a high cardiovascular disease risk.
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Affiliation(s)
- Marcyo Camara
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Kenio C. Lima
- Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Yuri A. Freire
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Gabriel C. Souto
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Geovani A. D. Macêdo
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Raissa de M. Silva
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Ludmila L. P. Cabral
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
- Graduate Program in Health Sciences, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Rodrigo A. V. Browne
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Telma M. A. M. Lemos
- Department of Clinical and Toxicological Analysis, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
| | - Debra L. Waters
- Department of Medicine and School of Physiotherapy, University of Otago, Dunedin, Otago, New Zealand
- Department of General Internal Medicine/Geriatrics, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Edgar R. Vieira
- Department of Physical Therapy, Florida International University, Miami, Florida, United States of America
| | - Todd M. Manini
- Institute on Aging, University of Florida, Gainesville, Florida, United States of America
- Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, Florida, United States of America
| | - Eduardo Caldas Costa
- ExCE Research Group, Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil
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Liu C, Downey RJ, Salminen JS, Rojas SA, Richer N, Pliner EM, Hwang J, Cruz-Almeida Y, Manini TM, Hass CJ, Seidler RD, Clark DJ, Ferris DP. Electrical Brain Activity during Human Walking with Parametric Variations in Terrain Unevenness and Walking Speed. bioRxiv 2023:2023.07.31.551289. [PMID: 37577540 PMCID: PMC10418077 DOI: 10.1101/2023.07.31.551289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Mobile brain imaging with high-density electroencephalography (EEG) can provide insight into the cortical processes involved in complex human walking tasks. While uneven terrain is common in the natural environment and poses challenges to human balance control, there is limited understanding of the supraspinal processes involved with traversing uneven terrain. The primary objective of this study was to quantify electrocortical activity related to parametric variations in terrain unevenness for neurotypical young adults. We used high-density EEG to measure brain activity when thirty-two young adults walked on a novel custom-made uneven terrain treadmill surface with four levels of difficulty at a walking speed tailored to each participant. We identified multiple brain regions associated with uneven terrain walking. Alpha (8 - 13 Hz) and beta (13 - 30 Hz) spectral power decreased in the sensorimotor and posterior parietal areas with increasing terrain unevenness while theta (4 - 8 Hz) power increased in the mid/posterior cingulate area with terrain unevenness. We also found that within stride spectral power fluctuations increased with terrain unevenness. Our secondary goal was to investigate the effect of parametric changes in walking speed (0.25 m/s, 0.5m/s, 0.75 m/s, 1.0 m/s) to differentiate the effects of walking speed from uneven terrain. Our results revealed that electrocortical activities only changed substantially with speed within the sensorimotor area but not in other brain areas. Together, these results indicate there are distinct cortical processes contributing to the control of walking over uneven terrain versus modulation of walking speed on smooth, flat terrain. Our findings increase our understanding of cortical involvement in an ecologically valid walking task and could serve as a benchmark for identifying deficits in cortical dynamics that occur in people with mobility deficits.
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Affiliation(s)
- Chang Liu
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- McKnight Brain Institute, University of Florida, Gainesville, FL
| | - Ryan J. Downey
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Jacob S. Salminen
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Sofia Arvelo Rojas
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Natalie Richer
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Erika M. Pliner
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Jungyun Hwang
- Department of Neurology, University of Florida, Gainesville, FL, USA
| | - Yenisel Cruz-Almeida
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, USA
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, FL, USA
- Department of Epidemiology, University of Florida, Gainesville, FL, USA
| | - Todd M. Manini
- Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, USA
| | - Chris J. Hass
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | - Rachael D. Seidler
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
- Norman Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, USA
- McKnight Brain Institute, University of Florida, Gainesville, FL
| | - David J. Clark
- Department of Neurology, University of Florida, Gainesville, FL, USA
- Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, USA
| | - Daniel P. Ferris
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
- McKnight Brain Institute, University of Florida, Gainesville, FL
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Liu C, Downey RJ, Mu Y, Richer N, Hwang J, Shah VA, Sato SD, Clark DJ, Hass CJ, Manini TM, Seidler RD, Ferris DP. Comparison of EEG Source Localization Using Simplified and Anatomically Accurate Head Models in Younger and Older Adults. IEEE Trans Neural Syst Rehabil Eng 2023; 31:2591-2602. [PMID: 37252873 PMCID: PMC10336858 DOI: 10.1109/tnsre.2023.3281356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Accuracy of electroencephalography (EEG) source localization relies on the volume conduction head model. A previous analysis of young adults has shown that simplified head models have larger source localization errors when compared with head models based on magnetic resonance images (MRIs). As obtaining individual MRIs may not always be feasible, researchers often use generic head models based on template MRIs. It is unclear how much error would be introduced using template MRI head models in older adults that likely have differences in brain structure compared to young adults. The primary goal of this study was to determine the error caused by using simplified head models without individual-specific MRIs in both younger and older adults. We collected high-density EEG during uneven terrain walking and motor imagery for 15 younger (22±3 years) and 21 older adults (74±5 years) and obtained [Formula: see text]-weighted MRI for each individual. We performed equivalent dipole fitting after independent component analysis to obtain brain source locations using four forward modeling pipelines with increasing complexity. These pipelines included: 1) a generic head model with template electrode positions or 2) digitized electrode positions, 3) individual-specific head models with digitized electrode positions using simplified tissue segmentation, or 4) anatomically accurate segmentation. We found that when compared to the anatomically accurate individual-specific head models, performing dipole fitting with generic head models led to similar source localization discrepancies (up to 2 cm) for younger and older adults. Co-registering digitized electrode locations to the generic head models reduced source localization discrepancies by ∼ 6 mm. Additionally, we found that source depths generally increased with skull conductivity for the representative young adult but not as much for the older adult. Our results can help inform a more accurate interpretation of brain areas in EEG studies when individual MRIs are unavailable.
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Smail EJ, Livingston T, Wolach A, Cenko E, Kaufmann CN, Manini TM. Media Consumption and COVID-19-Related Precautionary Behaviors During the Early Pandemic: Survey Study of Older Adults. JMIR Form Res 2023; 7:e46230. [PMID: 37213166 DOI: 10.2196/46230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 03/20/2023] [Accepted: 04/06/2023] [Indexed: 05/23/2023] Open
Abstract
BACKGROUND During the COVID-19 pandemic, media sources dedicated significant time and resources to improve knowledge of COVID-19 precautionary behaviors (eg, wearing a mask). Many older adults report using the television, radio, print newspapers, or web-based sources to get information on political news, yet little is known about whether consuming news in the early phase of the pandemic led to behavior change, particularly in older adults. OBJECTIVE The goals of this study were to determine (1) whether dosage of news consumption on the COVID-19 pandemic was associated with COVID-19 precautionary behaviors; (2) whether being an ever-user of social media was associated with engagement in COVID-19 precautionary behaviors; and (3) among social media users, whether change in social media use during the early stages of the pandemic was associated with engagement in COVID-19 precautionary behaviors. METHODS Data were obtained from a University of Florida-administered study conducted in May and June of 2020. Linear regression models were used to assess the association between traditional news and social media use on COVID-19 precautionary behaviors (eg, mask wearing, hand washing, and social distancing behaviors). Analyses were adjusted for demographic characteristics, including age, sex, marital status, and education level. RESULTS In a sample of 1082 older adults (mean age 73, IQR 68-78 years; 615/1082, 56.8% female), reporting 0 and <1 hour per day of media consumption, relative to >3 hours per day, was associated with lower engagement in COVID-19 precautionary behaviors in models adjusted for demographic characteristics (β=-2.00; P<.001 and β=-.41; P=.01, respectively). In addition, increasing social media use (relative to unchanged use) was associated with engagement in more COVID-19 precautionary behaviors (β=.70, P<.001). No associations were found between being an ever-user of social media and engaging in COVID-19 precautionary behaviors. CONCLUSIONS The results demonstrated an association between higher media consumption and greater engagement in COVID-19 precautionary behaviors in older adults. These findings suggest that media can be effectively used as a public health tool for communication of prevention strategies and best practices during future health threats, even among populations who are historically less engaged in certain types of media.
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Affiliation(s)
- Emily J Smail
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Torie Livingston
- Institute on Aging, University of Florida, Gainesville, FL, United States
| | - Adam Wolach
- Institute on Aging, University of Florida, Gainesville, FL, United States
| | - Erta Cenko
- Department of Epidemiology, College of Public Health and Health Professions, University of Florida, Gainesville, FL, United States
| | - Christopher N Kaufmann
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL, United States
| | - Todd M Manini
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL, United States
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Bai C, Zapata R, Karnati Y, Smail E, Hajduk AM, Gill TM, Ranka S, Manini TM, Mardini MT. Comparisons Between GPS-based and Self-reported Life-space Mobility in Older Adults. AMIA Annu Symp Proc 2023; 2022:212-220. [PMID: 37128363 PMCID: PMC10148377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Assessments of Life-space Mobility (LSM) evaluate the locations of movement and their frequency over a period of time to understand mobility patterns. Advancements in and miniaturization of GPS sensors in mobile devices like smartwatches could facilitate objective and high-resolution assessment of life-space mobility. The purpose of this study was to compare self-reported measures to GPS-based LSM extracted from 27 participants (44.4% female, aged 65+ years) who wore a smartwatch for 1-2 weeks at two different site locations (Connecticut and Florida). GPS features (e.g., excursion size/span) were compared to self-reported LSM with and without an indicator for needing assistance. Although correlations between self-reported measures and GPS-based LSM were positive, none were statistically significant. The correlations improved slightly when needing assistance was included, but statistical significance was achieved only for excursion size (r=0.40, P=0.04). The poor correlations between GPS-based and self-reported indicators suggest that they capture different dimensions of life-space mobility.
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Affiliation(s)
- Chen Bai
- University of Florida, Gainesville, Florida, USA
| | - Ruben Zapata
- University of Florida, Gainesville, Florida, USA
| | | | - Emily Smail
- University of Florida, Gainesville, Florida, USA
| | | | | | - Sanjay Ranka
- University of Florida, Gainesville, Florida, USA
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Shah VA, Cruz-Almeida Y, Roy A, Cenko E, Downey RJ, Ferris DP, Hass CJ, Reuter-Lorenz PA, Clark DJ, Manini TM, Seidler RD. Uneven terrain versus dual-task walking: differential challenges imposed on walking behavior in older adults are predicted by cognitive and sensorimotor function. bioRxiv 2023:2023.03.14.531779. [PMID: 36993462 PMCID: PMC10054936 DOI: 10.1101/2023.03.14.531779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
Abstract
Aging is associated with declines in walking function. To understand these mobility declines, many studies have obtained measurements while participants walk on flat surfaces in laboratory settings during concurrent cognitive task performance (dual-tasking). This may not adequately capture the real-world challenges of walking at home and around the community. Here, we hypothesized that uneven terrains in the walking path impose differential changes to walking speed compared to dual-task walking. We also hypothesized that changes in walking speed resulting from uneven terrains will be better predicted by sensorimotor function than cognitive function. Sixty-three community-dwelling older adults (65-93 yrs old) performed overground walking under varying walking conditions. Older adults were classified into two mobility function groups based on scores of the Short Physical Performance Battery. They performed uneven terrain walking across four surface conditions (Flat, Low, Medium, and High unevenness) and performed single and verbal dual-task walking on flat ground. Participants also underwent a battery of cognitive (cognitive flexibility, working memory, inhibition) and sensorimotor testing (grip strength, 2-pt discrimination, pressure pain threshold). Our results showed that walking speed decreased during both dual-task walking and across uneven terrain walking conditions compared to walking on flat terrain. Participants with lower mobility function had even greater decreases in uneven terrain walking speeds. The change in uneven terrain speed was associated with attention and inhibitory function. Changes in both dual-task and uneven terrain walking speeds were associated with 2-point tactile discrimination. This study further documents associations between mobility, executive functions, and somatosensation, highlights the differential costs to walking imposed by uneven terrains, and identifies that older adults with lower mobility function are more likely to experience these changes to walking function.
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Affiliation(s)
- Valay A Shah
- Dept. of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
- Dept. of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, USA
| | - Yenisel Cruz-Almeida
- Pain Research and Intervention Center of Excellence (PRICE), University of Florida, Gainesville, FL, USA
- Dept. of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, USA
| | - Arkaprava Roy
- Dept. of Biostatistics, University of Florida, Gainesville, FL, USA
| | - Erta Cenko
- Dept. of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, USA
- Dept. of Epidemiology, University of Florida, Gainesville, FL, USA
| | - Ryan J Downey
- Dept. of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Daniel P Ferris
- Dept. of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Chris J Hass
- Dept. of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
| | | | - David J Clark
- Dept of Physiology and Aging, University of Florida, Gainesville, FL, USA
- Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, USA
| | - Todd M Manini
- Dept. of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, USA
| | - Rachael D Seidler
- Dept. of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, USA
- Norman Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, USA
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Custodero C, Agosti P, Anton SD, Manini TM, Lozupone M, Panza F, Pahor M, Sabbà C, Solfrizzi V. Effect of Physical Activity Intervention on Gait Speed by Frailty Condition: A Randomized Clinical Trial. J Am Med Dir Assoc 2023; 24:489-496. [PMID: 36878264 DOI: 10.1016/j.jamda.2023.01.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 03/06/2023]
Abstract
OBJECTIVES There is uncertainty about effects of physical activity on physical performance, such as gait speed, among community-dwelling older adults according to their physical frailty status. We determined whether a long-term, moderate-intensity physical activity program was associated with different responses on gait speed over 4 m and 400 m based on physical frailty status. DESIGN Post hoc analysis from the Lifestyle Interventions and Independence for Elders (LIFE) (NCT01072500), a single-blind randomized clinical trial testing the effect of physical activity intervention compared with health education program. SETTING AND PARTICIPANTS We analyzed data on 1623 community-dwelling older adults (78.9 ± 5.2 years) at risk for mobility disability. METHODS Physical frailty was assessed at baseline using the Study of Osteoporotic Fractures frailty index. Gait speed over 4 m and 400 m was measured at baseline, and 6, 12, and 24 months. RESULTS We estimated significantly better 400-m gait speed at 6, 12, and 24 months for nonfrail older adults in the physical activity group, but not for frail participants. Among frail participants, physical activity showed a potentially clinically meaningful benefit on 400-m gait speed at 6 months (0.055; 95% CI 0.016-0.094; P = .005), compared with the healthy educational intervention, only in those who, at baseline, were able to rise from a chair 5 times without using their arms. CONCLUSIONS AND IMPLICATIONS A well-structured physical activity program produced a faster 400-m gait speed potentially able to prevent mobility disability among physically frail individuals with preserved muscle strength in lower limbs.
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Affiliation(s)
- Carlo Custodero
- Dipartimento Interdisciplinare di Medicina, Clinica Medica e Geriatria "Cesare Frugoni", University of Bari Aldo Moro, Bari, Italy
| | - Pasquale Agosti
- Department of Pathophysiology and Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Angelo Bianchi Bonomi Hemophilia and Thrombosis Center, and Fondazione Luigi Villa, Università degli Studi di Milano, Milan, Italy
| | - Stephen D Anton
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Madia Lozupone
- Population Health Unit-"Salus In Apulia Study", National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte, Bari, Italy
| | - Francesco Panza
- Population Health Unit-"Salus In Apulia Study", National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte, Bari, Italy.
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Carlo Sabbà
- Dipartimento Interdisciplinare di Medicina, Clinica Medica e Geriatria "Cesare Frugoni", University of Bari Aldo Moro, Bari, Italy
| | - Vincenzo Solfrizzi
- Dipartimento Interdisciplinare di Medicina, Clinica Medica e Geriatria "Cesare Frugoni", University of Bari Aldo Moro, Bari, Italy.
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Custodero C, Pahor M, Mazzoccoli C, Manini TM, Anton SD, Mazzocca A, Lozupone M, Panza F, Sabbà C, Solfrizzi V. Effect of change of interleukin-6 over time on gait speed response: Results from the lifestyle interventions and independence for elders study. Mech Ageing Dev 2023; 210:111763. [PMID: 36526102 DOI: 10.1016/j.mad.2022.111763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 11/27/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022]
Abstract
Interleukin (IL)-6 is a well-accepted biomarker of chronic low-grade inflammation possibly conditioning the effect of physical activity (PA) intervention on physical performance in mobility-limited older adults. We evaluated PA intervention effects on 400 m gait speed by yearly change of IL-6 levels in a post-hoc analysis from Lifestyle Interventions and Independence for Elders (LIFE) Study, a multicenter single-blind randomized clinical trial on 1300 sedentary older adults (mean age:78.85 ± 5.23,65.85 % women) at risk for mobility disability. We compared the intervention effects on 400 m gait speed at 12 months follow-up, according to yearly IL-6 change categorized for 1 pg/ml increase or decrease, and subsequently for larger range of yearly variation. Among subjects with yearly IL-6 change between -1 and + 2 pg/ml, we observed a significant difference of gait speed in PA intervention group compared to healthy educational intervention group [0.041 m/s,95 % confidence interval (CI):0.008-0.074,p = 0.006;Cohen's d:0.26, 95 % CI:0.12-0.41). No effects were observed on 400 m gait speed for wider range of variation of plasma IL-6 levels. Limiting change of IL-6 levels under this specific hormetic window could be an important goal to achieve better benefit from PA intervention in terms of gait speed change and prevention of mobility disability.
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Affiliation(s)
- Carlo Custodero
- Dipartimento Interdisciplinare di Medicina, University of Bari Aldo Moro, Bari, Italy
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Carmela Mazzoccoli
- Dipartimento Interdisciplinare di Medicina, University of Bari Aldo Moro, Bari, Italy
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Stephen D Anton
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Antonio Mazzocca
- Dipartimento Interdisciplinare di Medicina, University of Bari Aldo Moro, Bari, Italy
| | - Madia Lozupone
- Neurodegenerative Disease Unit, Department of Basic Medicine, Neuroscience, and Sense Organs, University of Bari Aldo Moro, Bari, Italy
| | - Francesco Panza
- Unit of Research Methodology and Data Sciences for Population Health, National Institute of Gastroenterology "Saverio de Bellis", Research Hospital, Castellana Grotte, Bari, Italy.
| | - Carlo Sabbà
- Dipartimento Interdisciplinare di Medicina, University of Bari Aldo Moro, Bari, Italy
| | - Vincenzo Solfrizzi
- Dipartimento Interdisciplinare di Medicina, University of Bari Aldo Moro, Bari, Italy.
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10
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Aduse-Poku L, Karanth SD, Wheeler M, Yang D, Washington C, Hong YR, Manini TM, Fabregas JC, Cheng TYD, Braithwaite D. Associations of Total Body Fat Mass and Skeletal Muscle Index with All-Cause and Cancer-Specific Mortality in Cancer Survivors. Cancers (Basel) 2023; 15:1081. [PMID: 36831420 PMCID: PMC9953880 DOI: 10.3390/cancers15041081] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
Purpose: The importance of body composition on cancer outcomes is of great clinical interest. Measures of body composition that differentiate fat mass from skeletal muscle mass can help redefine our understanding of body composition for cancer survival. We investigated whether the risk of all-cause and cancer-specific mortality differ by levels of total fat mass and sarcopenia status in cancer survivors. Our secondary aim was a subgroup analysis assessing the role of race within these associations. Methods: Participants included 1682 adult cancer survivors who had undergone a dual-energy X-ray absorptiometry (DXA) examination to measure body composition, from the 1999-2006 and 2011-2018 National Health and Nutrition Examination Survey (NHANES). Total fat mass was categorized into tertiles (we assessed high vs. low tertiles), and sarcopenia was considered as having an appendicular skeletal muscle mass index less than 7.26 kg/m2 for males and less than 5.45 kg/m2 for females. Multivariable Cox proportional hazard models estimated the adjusted hazard ratio (aHR) and 95% confidence interval (CI). Results: The mean age of study participants was 61.9 years, and they were followed up for an average of 9.67 years. The prevalence of sarcopenia was 25.0% (N = 304), and 33.4% (N = 561) had a high total fat mass. Participants with a higher fat mass (aHR = 1.30, 95% CI = 1.06-1.61) and with sarcopenia (aHR = 1.51, 95% CI = 1.22-1.88) had a 30% and 51% increased risk of all-cause mortality compared to participants with a low fat mass and with no sarcopenia, respectively. Further, sarcopenia (aHR = 1.74, 95% CI = 1.23-2.29) was associated with a higher risk of cancer-specific mortality in cancer survivors. The association between sarcopenia and all-cause mortality was twice as strong in Black people (aHR = 2.99, 95% CI = 1.39-6.06) compared to White people (aHR = 1.53, 95% CI = 1.19-1.95). Conclusions: Our findings show the opposing relations of fat mass and appendicular skeletal muscle mass index with mortality in a national sample of cancer survivors, and that the relationships may differ by race. These results emphasize the importance of maintaining a healthy body composition among cancer survivors.
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Affiliation(s)
- Livingstone Aduse-Poku
- Department of Epidemiology, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
| | - Shama D. Karanth
- University of Florida Health Cancer Center, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
- Aging & Geriatric Research, Institute on Aging, 2004 Mowry Rd., Gainesville, FL 32610, USA
| | - Meghann Wheeler
- Department of Epidemiology, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
| | - Danting Yang
- Department of Epidemiology, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
| | - Caretia Washington
- Department of Epidemiology, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
| | - Young-Rock Hong
- Department of Health Services Research, Management, & Policy, 1225 Center Dr., Gainesville, FL 32610, USA
| | - Todd M. Manini
- Department Health Outcomes & Biomedical Informatics, Institute on Aging, 2004 Mowry Rd., Gainesville, FL 32611, USA
| | - Jesus C. Fabregas
- Division of Hematology & Oncology, College of Medicine, University of Florida, 2000 SW Archer Rd., Gainesville, FL 32608, USA
| | - Ting-Yuan David Cheng
- Division of Cancer Prevention and Control, Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Dejana Braithwaite
- Department of Epidemiology, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
- University of Florida Health Cancer Center, University of Florida, 2004 Mowry Rd., Gainesville, FL 32610, USA
- Department of Surgery, University of Florida, 1600 SW Archer Rd., Gainesville, FL 32608, USA
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11
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Downey RJ, Richer N, Gupta R, Liu C, Pliner EM, Roy A, Hwang J, Clark DJ, Hass CJ, Manini TM, Seidler RD, Ferris DP. Uneven terrain treadmill walking in younger and older adults. PLoS One 2022; 17:e0278646. [PMID: 36534645 PMCID: PMC9762558 DOI: 10.1371/journal.pone.0278646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 11/21/2022] [Indexed: 12/24/2022] Open
Abstract
We developed a method for altering terrain unevenness on a treadmill to study gait kinematics. Terrain consisted of rigid polyurethane disks (12.7 cm diameter, 1.3-3.8 cm tall) which attached to the treadmill belt using hook-and-loop fasteners. Here, we tested four terrain unevenness conditions: Flat, Low, Medium, and High. The main objective was to test the hypothesis that increasing the unevenness of the terrain would result in greater gait kinematic variability. Seventeen younger adults (age 20-40 years), 25 higher-functioning older adults (age 65+ years), and 29 lower-functioning older adults (age 65+ years, Short Physical Performance Battery score < 10) participated. We customized the treadmill speed to each participant's walking ability, keeping the speed constant across all four terrain conditions. Participants completed two 3-minute walking trials per condition. Using an inertial measurement unit placed over the sacrum and pressure sensors in the shoes, we calculated the stride-to-stride variability in step duration and sacral excursion (coefficient of variation; standard deviation expressed as percentage of the mean). Participants also self-reported their perceived stability for each condition. Terrain was a significant predictor of step duration variability, which roughly doubled from Flat to High terrain for all participant groups: younger adults (Flat 4.0%, High 8.2%), higher-functioning older adults (Flat 5.0%, High 8.9%), lower-functioning older adults (Flat 7.0%, High 14.1%). Similarly, all groups exhibited significant increases in sacral excursion variability for the Medium and High uneven terrain conditions, compared to Flat. Participants were also significantly more likely to report feeling less stable walking over all three uneven terrain conditions compared to Flat. These findings support the hypothesis that altering terrain unevenness on a treadmill will increase gait kinematic variability and reduce perceived stability in younger and older adults.
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Affiliation(s)
- Ryan J. Downey
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Natalie Richer
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Rohan Gupta
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Chang Liu
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Erika M. Pliner
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Arkaprava Roy
- Department of Biostatistics, University of Florida, Gainesville, FL, United States of America
| | - Jungyun Hwang
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America
| | - David J. Clark
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America
- Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, United States of America
| | - Chris J. Hass
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States of America
| | - Todd M. Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States of America
| | - Rachael D. Seidler
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States of America
| | - Daniel P. Ferris
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
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12
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Zhang D, Mobley EM, Manini TM, Leeuwenburgh C, Anton SD, Washington CJ, Zhou D, Parker AS, Okunieff PG, Bian J, Guo Y, Pahor M, Hiatt RA, Braithwaite D. Frailty and risk of mortality in older cancer survivors and adults without a cancer history: Evidence from the National Health and Nutrition Examination Survey, 1999-2014. Cancer 2022; 128:2978-2987. [PMID: 35608563 PMCID: PMC9671088 DOI: 10.1002/cncr.34258] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 04/11/2022] [Accepted: 04/22/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Epidemiologic evidence reporting the role of frailty in survival among older adults with a prior cancer diagnosis is limited. METHODS A total of 2050 older adults (≥60 years old) surviving for at least 1 year after a cancer diagnosis and 9474 older adults without a cancer history from the National Health and Nutrition Examination Survey (1999-2014) were included for analysis. The exposure variable, a 45-item frailty index (FI), was categorized on the basis of validated cutoffs (FI ≤ 0.10 [fit], 0.10 < FI ≤ 0.21 [prefrail], and FI > 0.21 [frail]). All-cause mortality was ascertained via the National Death Index. Multivariable Cox proportional hazards models were used to estimate adjusted hazard ratios (aHRs) and 95% confidence interval (CIs) for the FI, and this was followed by restricted cubic splines depicting dose-response curves. RESULTS For older cancer survivors, the mean age at the baseline was 72.6 years (SD, 7.1 years); 5.9% were fit, 38.2% were prefrail, and 55.9% were frail. Older adults without a cancer history were slightly younger (mean age, 70.0 years) and less frail (47.9% were frail). At each level of the FI, cancer survivors (1.9 per 100 person-years for FI ≤ 0.10, 3.4 per 100 person-years for 0.10 < FI ≤ 0.21, and 7.5 per 100 person-years for FI > 0.21) had higher mortality than their cancer-free counterparts (1.4 per 100 person-years for FI ≤ 0.10, 2.4 per 100 person-years for 0.10 < FI ≤ 0.21, and 5.4 per 100 person-years for FI > 0.21). The multivariable model suggested a positive association between the FI and all-cause mortality for survivors (aHR for FI > 0.21 vs FI ≤ 0.10, 2.80; 95% CI, 1.73-4.53) and participants without a cancer history (aHR for FI > 0.21 vs FI ≤ 0.10, 2.75; 95% CI, 2.29-3.32). Restricted cubic splines indicated that all-cause mortality risk increased with the FI in a monotonic pattern. CONCLUSIONS Frailty is associated with a higher risk of death in older cancer survivors and the elderly without a cancer history.
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Affiliation(s)
- Dongyu Zhang
- Department of Epidemiology, University of Florida College of Public Health and Health Professions, Gainesville, Florida
- University of Florida Health Cancer Center, Gainesville, Florida
| | - Erin M. Mobley
- University of Florida Health Cancer Center, Gainesville, Florida
- Department of Surgery, University of Florida College of Medicine, Jacksonville, Florida
| | - Todd M. Manini
- Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, Florida
| | - Christiaan Leeuwenburgh
- Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, Florida
| | - Stephen D. Anton
- Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, Florida
| | | | - Daohong Zhou
- Department of Biochemistry and Structural Biology, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Alexander S. Parker
- University of Florida Health Cancer Center, Gainesville, Florida
- University of Florida College of Medicine, Jacksonville, Florida
| | - Paul G. Okunieff
- University of Florida Health Cancer Center, Gainesville, Florida
- Department of Radiation Oncology, University of Florida College of Medicine, Gainesville, Florida
| | - Jiang Bian
- University of Florida Health Cancer Center, Gainesville, Florida
- Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, Florida
| | - Yi Guo
- University of Florida Health Cancer Center, Gainesville, Florida
- Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, Florida
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, Florida
| | - Robert A. Hiatt
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California
| | - Dejana Braithwaite
- Department of Epidemiology, University of Florida College of Public Health and Health Professions, Gainesville, Florida
- University of Florida Health Cancer Center, Gainesville, Florida
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida
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13
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Wade FE, Kellaher GK, Pesquera S, Baudendistel ST, Roy A, Clark DJ, Seidler RD, Ferris DP, Manini TM, Hass CJ. Kinematic analysis of speed transitions within walking in younger and older adults. J Biomech 2022; 138:111130. [PMID: 35569430 PMCID: PMC9284670 DOI: 10.1016/j.jbiomech.2022.111130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 05/03/2022] [Accepted: 05/04/2022] [Indexed: 02/02/2023]
Abstract
The ability to adapt to environmental and task demands while walking is critical to independent mobility outside the home and this ability wanes with age. Such adaptability requires individuals to acutely change their walking speed. Regardless of age, changes between walking speeds are common in daily life, and are a frequent type of walking adaptability. Here, we report on older and younger adults when transitioning from preferred walking speed overground to either slower or faster walking. Specifically, we evaluated biomechanical parameters prior to, during, and post transition. Individuals approached the walking speed transition similarly, independent of whether the transition was to slower or faster walking. Regardless of age or walking speed, the step during which a walking speed transition occurred was distinct from those prior- and post- transition, with on average 0.15 m shorter step lengths, 3.6° more hip flexion, and 3.3° more dorsiflexion during stance. We also found that peak hip flexion occurred 22% later, and peak hip extension (39%), knee flexion (26%), and dorsiflexion (44%) occurred earlier in stance for both typical to slower and typical to faster walking. Older adults had altered timing of peak joint angles compared with younger adults across both acceleration and deceleration conditions, indicating age-dependent responses to changing walking speed. Our findings are an important first step in establishing values for kinematics during walking speed transitions in younger and typical older adults.
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Affiliation(s)
- Francesca E Wade
- Department of Applied Physiology & Kinesiology, University of Florida, United States.
| | - Grace K Kellaher
- Department of Applied Physiology & Kinesiology, University of Florida, United States; Department of Kinesiology & Applied Physiology, University of Delaware, United States
| | - Sarah Pesquera
- Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, United States; Center for the Intrepid, San Antonio, United States
| | - Sidney T Baudendistel
- Department of Applied Physiology & Kinesiology, University of Florida, United States; Department of Physical Therapy, Washington University St. Louis, School of Medicine, United States
| | - Arkaprava Roy
- Department of Biostatistics, University of Florida, United States
| | - David J Clark
- Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, United States; Department of Aging and Geriatric Research, University of Florida, United States
| | - Rachael D Seidler
- Department of Applied Physiology & Kinesiology, University of Florida, United States; Norman Fixel Institute for Neurological Diseases, University of Florida, United States
| | - Daniel P Ferris
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, United States
| | - Todd M Manini
- Institute on Aging, University of Florida, United States; Department of Health Outcomes and Biomedical Informatics, University of Florida, United States
| | - Chris J Hass
- Department of Applied Physiology & Kinesiology, University of Florida, United States; Norman Fixel Institute for Neurological Diseases, University of Florida, United States
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14
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Smail EJ, Kaufmann CN, Riehm KE, Mardini MT, Cenko E, Bai C, Manini TM. Worsening sleep predicts lower life space mobility during the onset of the COVID-19 pandemic. J Am Geriatr Soc 2022; 70:1931-1938. [PMID: 35608359 PMCID: PMC9283282 DOI: 10.1111/jgs.17896] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 05/10/2022] [Accepted: 05/15/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Poor sleep health is an understudied yet potentially modifiable risk factor for reduced life space mobility (LSM), defined as one's habitual movement throughout a community. The objective of this study was to determine whether recalled changes in sleep traits (e.g., sleep quality, refreshing sleep, sleep problems, and difficulty falling asleep) because of the COVID-19 pandemic were associated with LSM in older adults. METHODS Data were obtained from a University of Florida-administered study conducted in May and June of 2020 (n = 923). Linear regression models were used to assess the impact of COVID-related change in sleep traits with summary scores from the Life Space Assessment. Analyses were adjusted for demographic, mental, and physical health characteristics, COVID-related avoidant behaviors, and pre-COVID sleep ratings. RESULTS In unadjusted models, reporting that any sleep trait got "a lot worse" or "a little worse" was associated with a decrease in LSM (all p < 0.05). Results were attenuated when accounting for demographic, mental, and physical health characteristics. In fully adjusted models, reporting that problems with sleep got "a lot worse" or that refreshing sleep got "a little worse" was associated with a lower standardized LSM score (β = -0.38, 95% CI: -0.74, -0.01, and β = -0.19, 95% CI: -0.37, -0.00, respectively). CONCLUSIONS While additional research is needed in diverse people and environments, the results demonstrate an association between sleep traits that worsen in response to a health threat and reduced LSM. This finding suggests that interventions that focus on maintaining sleep health in times of heightened stress could preserve LSM.
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Affiliation(s)
- Emily J Smail
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Christopher N Kaufmann
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Kira E Riehm
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA
| | - Mamoun T Mardini
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Erta Cenko
- Department of Epidemiology, College of Public Health and Health Professions, University of Florida, Gainesville, Florida, USA
| | - Chen Bai
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville, Florida, USA
| | - Todd M Manini
- Department of Health Outcomes & Biomedical Informatics, College of Medicine, University of Florida, Gainesville, Florida, USA
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15
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Bai C, Wanigatunga AA, Saldana S, Casanova R, Manini TM, Mardini MT. Are Machine Learning Models on Wrist Accelerometry Robust against Differences in Physical Performance among Older Adults? Sensors (Basel) 2022; 22:3061. [PMID: 35459045 PMCID: PMC9032589 DOI: 10.3390/s22083061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 04/01/2022] [Accepted: 04/13/2022] [Indexed: 06/14/2023]
Abstract
Sufficient physical activity (PA) reduces the risk of a myriad of diseases and preserves physical capabilities in later life. While there have been significant achievements in mapping accelerations to real-life movements using machine learning (ML), errors continue to be common, particularly for wrist-worn devices. It remains unknown whether ML models are robust for estimating age-related loss of physical function. In this study, we evaluated the performance of ML models (XGBoost and LASSO) to estimate the hallmark measures of PA in low physical performance (LPP) and high physical performance (HPP) groups. Our models were built to recognize PA types and intensities, identify each individual activity, and estimate energy expenditure (EE) using wrist-worn accelerometer data (33 activities per participant) from a large sample of participants (n = 247, 57% females, aged 60+ years). Results indicated that the ML models were accurate in recognizing PA by type and intensity while also estimating EE accurately. However, the models built to recognize individual activities were less robust. Across all tasks, XGBoost outperformed LASSO. XGBoost obtained F1-Scores for sedentary (0.932 ± 0.005), locomotion (0.946 ± 0.003), lifestyle (0.927 ± 0.006), and strength flexibility exercise (0.915 ± 0.017) activity type recognition tasks. The F1-Scores for recognizing low, light, and moderate activity intensity were (0.932 ± 0.005), (0.840 ± 0.004), and (0.869 ± 0.005), respectively. The root mean square error for EE estimation was 0.836 ± 0.059 METs. There was no evidence showing that splitting the participants into the LPP and HPP groups improved the models’ performance on estimating the hallmark measures of physical activities. In conclusion, using features derived from wrist-worn accelerometer data, machine learning models can accurately recognize PA types and intensities and estimate EE for older adults with high and low physical function.
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Affiliation(s)
- Chen Bai
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (T.M.M.); (M.T.M.)
| | - Amal A. Wanigatunga
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA;
| | - Santiago Saldana
- Department of Biostatistics and Data Science, School of Medicine, Wake Forest University, Winston-Salem, NC 27101, USA; (S.S.); (R.C.)
| | - Ramon Casanova
- Department of Biostatistics and Data Science, School of Medicine, Wake Forest University, Winston-Salem, NC 27101, USA; (S.S.); (R.C.)
| | - Todd M. Manini
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (T.M.M.); (M.T.M.)
| | - Mamoun T. Mardini
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL 32610, USA; (T.M.M.); (M.T.M.)
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16
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Vouri SM, Morris EJ, Usmani SA, Reise R, Jiang X, Pepine CJ, Manini TM, Malone DC, Winterstein AG. Evaluation of the key prescription sequence symmetry analysis assumption using the calcium channel blocker: Loop diuretic prescribing cascade. Pharmacoepidemiol Drug Saf 2022; 31:72-81. [PMID: 34553438 PMCID: PMC8688319 DOI: 10.1002/pds.5362] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/15/2021] [Accepted: 09/20/2021] [Indexed: 01/03/2023]
Abstract
OBJECTIVES To evaluate the prescription sequence symmetry analysis assumption regarding balance between marker drug (i.e., medication used to treat a drug-induced adverse event) initiation rates before and after initiation of an index drug (i.e., medication that is potentially associated with the drug-induced adverse event) in the absence of prescribing cascades, we used a well-described example of loop diuretic initiation to treat dihydropyridine calcium channel blockers (DH CCB)-induced edema. STUDY DESIGN AND SETTING The University of Florida Health Integrated Data Repository from June 2011 and July 2018 was used to assess temporal prescribing of DH CCB and loop diuretics within the prescription sequence symmetry analysis framework. Validation of the prescribing cascade was performed via clinical expert chart review. RESULTS Among patients without heart failure who were initiated on DH CCB, 26 and 64 loop diuretics initiators started within 360 days before versus after DH CCB initiation, respectively, resulting in an adjusted sequence ratio (aSR) of 2.27 (95% CI, 1.44-3.58). Overall, 35 (54.7%) patients were determined to have a prescribing cascade. Removing patients who experienced a prescribing cascade resulted in an aSR of 1.05, 95% CI 0.62-1.78). CONCLUSION Loop diuretic initiation rates before and after DH CCB initiation for reasons other a prescribing cascade were similar, thus confirming the prescription sequence symmetry analysis assumption.
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Affiliation(s)
- Scott M. Vouri
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL,Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL,University of Florida Health Physicians, Gainesville, FL,Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL
| | - Earl J. Morris
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL
| | - Silken A. Usmani
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL,University of Florida Health Physicians, Gainesville, FL
| | - Rachel Reise
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL,University of Florida Health Physicians, Gainesville, FL
| | - Xinyi Jiang
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL
| | - Carl J. Pepine
- Division of Cardiovascular Medicine, Department of Medicine, University of Florida College of Medicine, Gainesville, FL
| | - Todd M. Manini
- Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL
| | - Daniel C. Malone
- Department of Pharmacotherapy, University of Utah College of Pharmacy, Salt Lake City, Utah
| | - Almut G. Winterstein
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL,Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL,Department of Epidemiology, College of Medicine and College of Public Health and Health Professions, University of Florida, Gainesville, FL
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17
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Cenko E, Chen H, Gill TM, Glynn NW, Henderson RM, King AC, Pahor M, Qiu P, Rego A, Reid KF, Tudor-Locke C, Valiani V, You L, Manini TM. Ratings of Perceived Exertion During Walking: Predicting Major Mobility Disability and Effect of Structured Physical Activity in Mobility-Limited Older Adults. J Gerontol A Biol Sci Med Sci 2021; 76:e264-e271. [PMID: 33585918 DOI: 10.1093/gerona/glab036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND This study evaluated the association between ratings of perceived exertion (RPE) of walking and major mobility disability (MMD), as well as their transitions in response to a physical activity (PA) compared to a health education (HE) program. METHODS Older adults (n = 1633) who were at risk for mobility impairment were randomized to structured PA or HE programs. During a 400 m walk, participants rated exertion as "light" or "hard." An MMD event was defined as the inability to walk 400 m. MMD events and RPE values were assessed every 6 months for an average of 2.6 years. RESULTS Participants rating their exertion as "hard" had a nearly threefold higher risk of MMD compared with those rating their exertion as "light" (HR: 2.61, 95% CI: 2.19-3.11). The association was held after adjusting for disease conditions, depression, cognitive function, and walking speed (HR: 2.24, 95% CI: 1.87-2.69). The PA group was 25% more likely to transition from "light" to "hard" RPE than the HE group (HR: 1.25, 95% CI: 1.05-1.49). Additionally, the PA group was 27% (HR: 0.73, 95% CI: 0.55 - 0.97) less likely to transition from a "hard" RPE to inability to walk 400 m and was more likely to recover their ability to walk 400 m by transitioning to a "hard" RPE (HR: 2.10, 95% CI: 1.39-3.17) than the HE group. CONCLUSIONS Older adults rating "hard" effort during a standardized walk test were at increased risk of subsequent MMD. A structured PA program enabled walking recovery, but was more likely to increase transition from "light" to "hard" effort, which may reflect the greater capacity to perform the test.
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Affiliation(s)
- Erta Cenko
- Department of Epidemiology, University of Florida, Gainesville, USA
| | - Haiying Chen
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Thomas M Gill
- Department of Internal Medicine, Division of Geriatric Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Nancy W Glynn
- Department of Epidemiology, University of Pittsburgh, Pennsylvania, USA
| | - Rebecca M Henderson
- Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Abby C King
- Department of Health Research and Policy, Stanford University, California, USA
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, USA
| | - Peihua Qiu
- Department of Biostatistics, University of Florida, Gainesville, USA
| | - Alvito Rego
- Division of General Internal Medicine and Geriatrics, Northwestern University, Chicago, Illinois, USA
| | - Kieran F Reid
- Nutrition, Exercise Physiology and Sarcopenia Lab, Tufts University, Boston, Massachusetts, USA
| | | | - Vincenzo Valiani
- Department of Interdisciplinary Medicine, Università degli Studi di Bari Aldo Moro, Italy
| | - Lu You
- Department of Biostatistics, University of Florida, Gainesville, USA
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, USA
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18
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Dion C, Tanner JJ, Crowley SJ, Wiggins ME, Mareci T, Ding M, Price CC, Manini TM. Functional connectivity of key resting state networks and objectively measured physical activity in older adults with joint pain: A pilot study. Exp Gerontol 2021; 153:111470. [PMID: 34246732 DOI: 10.1016/j.exger.2021.111470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/28/2021] [Accepted: 07/04/2021] [Indexed: 11/15/2022]
Abstract
BACKGROUND Greater brain network integrity may associate with physically active lifestyles. Three resting state networks may provide unique insights into known physical activity-mediated brain health benefits: the default mode network (involved with self-monitoring), the salience network (involved in orienting oneself to salient external and internal stimuli), and the central executive network (responsible for higher level cognitive task). The current study explored relationships between system-wide neural network integrity measured by functional magnetic resonance imaging and objectively-measured physical activity. We hypothesize connectivity patterns as measured by fMRI networks will relate to actigraphy markers such that 1) there will be higher connectivity within the central executive network in more physically active individuals, and 2) there will be higher connectivity within the default mode network and salience network in those with higher levels of physical activity. METHODS Eighteen non-demented older adults with orthopedic pain (age 67.11 ± 5.61, 50% female, education 15.94 ± 2.51 years) completed brain magnetic resonance imaging, and wore an actigraphy device to objectively measure types of physical and sedentary engagement. RESULTS Results showed a negative relationship between central executive network connectivity and sedentary time (β = -0.108, p = .039), and a positive relationship with both moderate-to-vigorous physical activity (β = 0.629, p = .029) and total activity time (β = 0.645, p = .039). Results also showed positive relationships for the default mode network (β = 0.588, p = .033) and the salience network (β = 0.608, p = .037) with mean cadence (i.e. steps per minute). CONCLUSIONS Our work adds to the existing literature on specific types of activity measurement (i.e. sedentary time, cadence and moderate-to-vigorous physical activity) which will be useful for interventions aimed at improving the integrity of underlying neural networks.
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Affiliation(s)
- Catherine Dion
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA.
| | - Jared J Tanner
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
| | - Samuel J Crowley
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
| | - Margaret E Wiggins
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
| | - Thomas Mareci
- Department of Biochemistry and Molecular Biology, University of Florida, Gainesville, FL, USA
| | - Mingzhou Ding
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Catherine C Price
- Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA; Department of Anesthesiology, University of Florida, Gainesville, FL, USA
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
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19
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Cawthon PM, Patel SM, Kritchevsky SB, Newman AB, Santanasto A, Kiel DP, Travison TG, Lane N, Cummings SR, Orwoll ES, Kwok T, Hirani V, Schousboe J, Karlsson MK, Mellström D, Ohlsson C, Ljunggren Ö, Xue QL, Shardell M, Jordan JM, Pencina KM, Fielding RA, Magaziner J, Correa-de-Araujo R, Bhasin S, Manini TM. What cut-point in gait speed best discriminates community dwelling older adults with mobility complaints from those without? A pooled analysis from the Sarcopenia Definitions and Outcomes Consortium. J Gerontol A Biol Sci Med Sci 2021; 76:e321-e327. [PMID: 34166490 DOI: 10.1093/gerona/glab183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Cut-points to define slow walking speed have largely been derived from expert opinion. METHODS Study participants (13,589 men and 5,043 women aged ≥65years) had walking speed (m/s) measured over 4-6 meters (mean ± SD: 1.20 ± 0.27 m/s in men and 0.94 ± 0.24 m/s in women.) Mobility limitation was defined as self-reported any difficulty with walking ~1/4 mile (prevalence: 12.6% men, 26.4% women). Sex-stratified classification and regression tree (CART) models with 10-fold cross-validation identified walking speed cut-points that optimally discriminated those who reported mobility limitation from those who did not. RESULTS Among 5,043 women, CART analysis identified two cut-points, classifying 4,144 (82.2%) with walking speed ≥0.75 m/s, which we labeled as "fast"; 478 (9.5%) as "intermediate" (walking speed ≥0.62 m/s but <0.75 m/s); and 421 (8.3%) as "slow" (walking speed <0.62 m/s). Among 13,589 men, CART analysis identified three cut-points, classifying 10,001 (73.6%) with walking speed ≥1.00 m/s ("very fast"); 2,901 (21.3%) as "fast" (walking speed ≥0.74 m/s but <1.00 m/s); 497 (3.7%) as "intermediate" (walking speed ≥0.57 m/s but <0.74 m/s); and 190 (1.4%) as "slow" (walking speed <0.57 m/s). Prevalence of self-reported mobility limitation was lowest in the "fast" or "very fast" (11% for men and 19% for women) and highest in the "slow" (60.5% in men and 71.0% in women). Rounding the two slower cut-points to 0.60 m/s and 0.75 m/s reclassified very few participants. CONCLUSIONS Cut-points in walking speed of ~0.60 m/s and 0.75 m/s discriminate those with self-reported mobility limitation from those without.
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Affiliation(s)
- Peggy M Cawthon
- Research Institute, California Pacific Medical Center, San Francisco, CA.,Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA
| | - Sheena M Patel
- Research Institute, California Pacific Medical Center, San Francisco, CA
| | - Stephen B Kritchevsky
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, NC
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA
| | - Adam Santanasto
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, PA
| | - Douglas P Kiel
- Marcus Institute for Aging Research, Hebrew SeniorLife, Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Thomas G Travison
- Marcus Institute for Aging Research, Hebrew SeniorLife, Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Nancy Lane
- Center for Musculoskeletal Health and Department of Internal Medicine, University of California Medical Center, Sacramento, CA
| | - Steven R Cummings
- Research Institute, California Pacific Medical Center, San Francisco, CA.,Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA
| | - Eric S Orwoll
- Bone and Mineral Unit, Oregon Health & Science University, Portland
| | - Timothy Kwok
- Department of Medicine & Therapeutics and School of Public Health, Faculty of Medicine, The Chinese University of Hong Kong
| | - Vasant Hirani
- Charles Perkins Centre, University of Sydney, Sydney, Australia
| | - John Schousboe
- HealthPartners Institute, Bloomington, Minnesota and Division of Health Policy and Management, University of Minnesota, Minneapolis
| | - Magnus K Karlsson
- Clinical and Molecular Osteoporosis Research Unit, Department of Orthopedics and Clinical Sciences in Malmo, Skane University Hospital, Lund University, Malmo, Sweden
| | - Dan Mellström
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Claes Ohlsson
- Centre for Bone and Arthritis Research, Department of Internal Medicine and Clinical Nutrition, Institute of Medicine, The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Drug Treatment, Sahlgrenska University Hospital, Region Västra Götaland, Gothenburg, Sweden
| | - Östen Ljunggren
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Qian-Li Xue
- Division of Geriatric Medicine and Gerontology and Center on Aging and Health, Johns Hopkins Medical Institute, Baltimore, MD
| | - Michelle Shardell
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Joanne M Jordan
- Thurston Arthritis Research Center, School of Medicine, University of North Carolina, Chapel Hill, NC
| | - Karol M Pencina
- Marcus Institute for Aging Research, Hebrew SeniorLife, Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA
| | - Roger A Fielding
- Nutrition, Exercise, Physiology, and Sarcopenia Laboratory, Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | - Jay Magaziner
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | | | - Shalender Bhasin
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, 221 Longwood Avenue, Boston, MA
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20
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Morris EJ, Brown JD, Manini TM, Vouri SM. Differences in Health-Related Quality of Life Among Adults with a Potential Dihydropyridine Calcium Channel Blocker-Loop Diuretic Prescribing Cascade. Drugs Aging 2021; 38:625-632. [PMID: 34095980 DOI: 10.1007/s40266-021-00868-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Dihydropyridine calcium channel blockers (DH CCBs) are commonly used for hypertension in older adults. However, loop diuretics can be inappropriately added to treat DH CCB-induced edema, putting individuals at increased risk for adverse events and potential decreases in quality of life. METHODS We conducted a cross-sectional analysis using United States Medical Expenditure Panel Survey (MEPS) data from 2003 to 2015. Adults aged ≥ 55 years without congestive heart failure, nephrotic syndrome, chronic kidney disease, renal failure, and cirrhosis who had consecutive rounds of DH CCB use (round 1 and 2 or round 3 and 4) and completed the self-administered questionnaire (SAQ) were included. Patients initiated on loop diuretics in round 2 or 4 were compared to those not initiated. Physical Component Summary (PCS) and Mental Component Summary (MCS) scores were analyzed using multivariable linear regression models. RESULTS Among 5,458,467 DH CCB users (weighted), 3.4% of individuals were identified with new loop diuretic use (185,130 weighted). After adjusting for covariates, DH CCB plus loop diuretic use was associated with a PCS score 3.12 units lower (95% confidence interval - 5.40 to - 0.83; p = 0.008) than DH CCB use alone. We observed no significant difference in MCS score (p = 0.160) among DH CCB plus loop diuretic users compared to DH CCB users alone. CONCLUSIONS New loop diuretic use was associated with lower physical functioning among DH CCB users. These findings suggest that this potential prescribing cascade may result in both significant and clinically meaningful decreases in health-related quality of life. It is important for clinicians to avoid or intervene on this inappropriate prescribing cascade when possible.
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Affiliation(s)
- Earl J Morris
- Department of Pharmaceutical Outcomes and Policy, University of Florida College of Pharmacy, 1225 Center Dr, Gainesville, FL, 32610, USA
| | - Joshua D Brown
- Department of Pharmaceutical Outcomes and Policy, University of Florida College of Pharmacy, 1225 Center Dr, Gainesville, FL, 32610, USA.,Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL, USA
| | - Todd M Manini
- Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL, USA.,Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL, USA
| | - Scott M Vouri
- Department of Pharmaceutical Outcomes and Policy, University of Florida College of Pharmacy, 1225 Center Dr, Gainesville, FL, 32610, USA. .,Center for Drug Evaluation and Safety, University of Florida, Gainesville, FL, USA. .,Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL, USA.
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21
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Mardini MT, Bai C, Wanigatunga AA, Saldana S, Casanova R, Manini TM. Age Differences in Estimating Physical Activity by Wrist Accelerometry Using Machine Learning. Sensors (Basel) 2021; 21:3352. [PMID: 34065906 PMCID: PMC8150764 DOI: 10.3390/s21103352] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/30/2021] [Accepted: 05/10/2021] [Indexed: 11/30/2022]
Abstract
Accelerometer-based fitness trackers and smartwatches are proliferating with incessant attention towards health tracking. Despite their growing popularity, accurately measuring hallmark measures of physical activities has yet to be accomplished in adults of all ages. In this work, we evaluated the performance of four machine learning models: decision tree, random forest, extreme gradient boosting (XGBoost) and least absolute shrinkage and selection operator (LASSO), to estimate the hallmark measures of physical activities in young (20-50 years), middle-aged (50-70 years], and older adults (70-89 years]. Our models were built to recognize physical activity types, recognize physical activity intensities, estimate energy expenditure (EE) and recognize individual physical activities using wrist-worn tri-axial accelerometer data (33 activities per participant) from a large sample of participants (n = 253, 62% women, aged 20-89 years old). Results showed that the machine learning models were quite accurate at recognizing physical activity type and intensity and estimating energy expenditure. However, models performed less optimally when recognizing individual physical activities. F1-Scores derived from XGBoost's models were high for sedentary (0.955-0.973), locomotion (0.942-0.964) and lifestyle (0.913-0.949) activity types with no apparent difference across age groups. Low (0.919-0.947), light (0.813-0.828) and moderate (0.846-0.875) physical activity intensities were also recognized accurately. The root mean square error range for EE was approximately 1 equivalent of resting EE [0.835-1.009 METs]. Generally, random forest and XGBoost models outperformed other models. In conclusion, machine learning models to label physical activity types, activity intensity and energy expenditure are accurate and there are minimal differences in their performance across young, middle-aged and older adults.
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Affiliation(s)
- Mamoun T. Mardini
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
| | - Chen Bai
- Department of Health Outcomes and Biomedical Informatics, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
| | - Amal A. Wanigatunga
- Department of Epidemiology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD 21205, USA;
| | - Santiago Saldana
- Department of Biostatistics and Data Science, School of Medicine, Wake Forest University, Winston-Salem, NC 27101, USA; (S.S.); (R.C.)
| | - Ramon Casanova
- Department of Biostatistics and Data Science, School of Medicine, Wake Forest University, Winston-Salem, NC 27101, USA; (S.S.); (R.C.)
| | - Todd M. Manini
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL 32610, USA;
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22
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Davoudi A, Mardini MT, Nelson D, Albinali F, Ranka S, Rashidi P, Manini TM. The Effect of Sensor Placement and Number on Physical Activity Recognition and Energy Expenditure Estimation in Older Adults: Validation Study. JMIR Mhealth Uhealth 2021; 9:e23681. [PMID: 33938809 PMCID: PMC8129874 DOI: 10.2196/23681] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 10/28/2020] [Accepted: 03/15/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Research has shown the feasibility of human activity recognition using wearable accelerometer devices. Different studies have used varying numbers and placements for data collection using sensors. OBJECTIVE This study aims to compare accuracy performance between multiple and variable placements of accelerometer devices in categorizing the type of physical activity and corresponding energy expenditure in older adults. METHODS In total, 93 participants (mean age 72.2 years, SD 7.1) completed a total of 32 activities of daily life in a laboratory setting. Activities were classified as sedentary versus nonsedentary, locomotion versus nonlocomotion, and lifestyle versus nonlifestyle activities (eg, leisure walk vs computer work). A portable metabolic unit was worn during each activity to measure metabolic equivalents (METs). Accelerometers were placed on 5 different body positions: wrist, hip, ankle, upper arm, and thigh. Accelerometer data from each body position and combinations of positions were used to develop random forest models to assess activity category recognition accuracy and MET estimation. RESULTS Model performance for both MET estimation and activity category recognition were strengthened with the use of additional accelerometer devices. However, a single accelerometer on the ankle, upper arm, hip, thigh, or wrist had only a 0.03-0.09 MET increase in prediction error compared with wearing all 5 devices. Balanced accuracy showed similar trends with slight decreases in balanced accuracy for the detection of locomotion (balanced accuracy decrease range 0-0.01), sedentary (balanced accuracy decrease range 0.05-0.13), and lifestyle activities (balanced accuracy decrease range 0.04-0.08) compared with all 5 placements. The accuracy of recognizing activity categories increased with additional placements (accuracy decrease range 0.15-0.29). Notably, the hip was the best single body position for MET estimation and activity category recognition. CONCLUSIONS Additional accelerometer devices slightly enhance activity recognition accuracy and MET estimation in older adults. However, given the extra burden of wearing additional devices, single accelerometers with appropriate placement appear to be sufficient for estimating energy expenditure and activity category recognition in older adults.
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Affiliation(s)
- Anis Davoudi
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Mamoun T Mardini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | - David Nelson
- Qmedic Medical Alert Systems, Boston, MA, United States
| | - Fahd Albinali
- Qmedic Medical Alert Systems, Boston, MA, United States
| | - Sanjay Ranka
- Department of Computer and Information Science and Engineering, University of Florida, Gainesville, FL, United States
| | - Parisa Rashidi
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
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23
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Slysz JT, Rejeski WJ, Treat-Jacobson D, Bazzano LA, Forman DE, Manini TM, Criqui MH, Tian L, Zhao L, Zhang D, Guralnik JM, Ferrucci L, Kibbe MR, Polonsky TS, Spring B, Sufit R, Leeuwenburgh C, McDermott MM. Sustained physical activity in peripheral artery disease: Associations with disease severity, functional performance, health-related quality of life, and subsequent serious adverse events in the LITE randomized clinical trial. Vasc Med 2021; 26:497-506. [PMID: 33829920 DOI: 10.1177/1358863x21989430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study investigated cross-sectional associations of peripheral artery disease (PAD) severity (defined by the ankle-brachial index (ABI)) and amounts of daily sustained physical activity (PA) (defined as > 100 activity counts per minute lasting 5 consecutive minutes or more). This study also investigated associations of amounts of daily sustained PA with 6-minute walk (6MW) distance and the Short Form-36 physical functioning domain (SF-36 PF) score in cross-sectional analyses and with serious adverse events (SAEs) in longitudinal analyses of people with PAD. PA was measured continuously for 10 days using a tri-axial accelerometer at baseline in 277 participants with PAD randomized to the LITE clinical trial. In regression analyses, each 0.15 lower ABI value was associated with a 5.67% decrease in the number of daily bouts of sustained PA (95% CI: 3.85-6.54; p < 0.001). Every additional bout of sustained PA per day was associated with a 4.56-meter greater 6MW distance (95% CI: 2.67-6.46; p < 0.0001), and a 0.81-point improvement in SF-36 PF score (95% CI: 0.34-1.28; p < 0.001). Participants with values of daily bouts of sustained PA below the median had higher rates of SAEs during follow-up, compared to participants above the median (41% vs 24%; p = 0.002). In conclusion, among participants with PAD, lower ABI values were associated with fewer bouts of daily sustained PA. A greater number of bouts of daily sustained PA were associated with better 6MW performance and SF-36 PF score, and, in longitudinal analyses, lower rates of SAEs. Clinicaltrials.gov ID: NCT02538900.
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Affiliation(s)
- Joshua T Slysz
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - W Jack Rejeski
- Department of Health and Exercise Science and Geriatric Medicine, Wake Forest University, Winston Salem, NC, USA
| | | | - Lydia A Bazzano
- School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, USA
| | - Daniel E Forman
- School of Medicine, University of Pittsburgh, Pittsburg, PA, USA
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Michael H Criqui
- Department of Family Medicine and Public Health, University of California at San Diego, San Diego, CA, USA
| | - Lu Tian
- Department of Biomedical Data Science, Stanford University, Palo Alto, CA, USA
| | - Lihui Zhao
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Dongxue Zhang
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Jack M Guralnik
- Department of Epidemiology, University of Maryland, Baltimore, MD, USA
| | - Luigi Ferrucci
- National Institute of Aging, The Intramural Research Program, Baltimore, MD, USA
| | - Melina R Kibbe
- Department of Surgery, University of North Carolina, Chapel Hill, NC, USA
| | | | - Bonnie Spring
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Robert Sufit
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | | | - Mary M McDermott
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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24
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Beavers DP, Kritchevsky SB, Gill TM, Ambrosius WT, Anton SD, Fielding RA, King AC, Rejeski WJ, Lovato L, McDermott MM, Newman AB, Pahor M, Walkup MP, Tracy RP, Manini TM. Elevated IL-6 and CRP levels are associated with incident self-reported major mobility disability: A pooled analysis of older adults with slow gait speed. J Gerontol A Biol Sci Med Sci 2021; 76:2293-2299. [PMID: 33822946 DOI: 10.1093/gerona/glab093] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Elevated Interleukine-6 (IL-6) and C-reactive protein (CRP) are associated with aging-related reductions in physical function, but little is known about their independent and combined relationships with major mobility disability (MMD), defined as the self-reported inability to walk a quarter-mile. METHODS We estimated the absolute and relative effect of elevated baseline IL-6, CRP, and their combination on self-reported MMD risk among older adults (≥68 years; 59% female) with slow gait speed (<1.0m/s). Participants were MMD-free at baseline. IL-6 and CRP were assessed using a central laboratory. The study combined a cohort of community dwelling high-functioning older adults (Health ABC) with two trials of low-functioning adults at risk of MMD (LIFE-P, LIFE). Analyses utilized Poisson regression for absolute MMD incidence and proportional hazards models for relative risk. RESULTS We found higher MMD risk per unit increase in log IL-6 [HR=1.26 (95% CI 1.13 to 1.41)]. IL-6 meeting pre-determined threshold considered to be high (>2.5 pg/mL) was similarly associated with higher risk of MMD [HR=1.31 (95% CI: 1.12 to 1.54)]. Elevated CRP (CRP >3.0 mg/L) was also associated with increased MMD risk [HR=1.38 (95% CI: 1.10 to 1.74)]. The CRP effect was more pronounced among participants with elevated IL-6 [HR=1.62 (95% CI: 1.12 to 2.33)] compared to lower IL-6 levels [HR=1.19 (95% CI: 0.85 to 1.66)]. CONCLUSIONS High baseline IL-6 and CRP were associated with increased risk of MMD among older adults with slow gait speed. A combined biomarker model suggests CRP was associated with MMD when IL-6 was elevated.
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Affiliation(s)
- Daniel P Beavers
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | | | - Thomas M Gill
- Yale School of Medicine, New Haven, Connecticut, USA
| | | | | | | | - Abby C King
- Departments of Epidemiology & Population Health and of Medicine (Stanford Prevention Research Center), Stanford University School of Medicine, California, USA
| | - W Jack Rejeski
- Wake Forest University, Winston-Salem, North California, USA
| | - Laura Lovato
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | | | | | | | - Michael P Walkup
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
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25
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Clark LA, Manini TM, Wages NP, Simon JE, Russ DW, Clark BC. Reduced Neural Excitability and Activation Contribute to Clinically Meaningful Weakness in Older Adults. J Gerontol A Biol Sci Med Sci 2021; 76:692-702. [PMID: 32588058 PMCID: PMC8011705 DOI: 10.1093/gerona/glaa157] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Weakness is a risk factor for physical limitations and death in older adults (OAs). We sought to determine whether OAs with clinically meaningful leg extensor weakness exhibit differences in voluntary inactivation (VIA) and measures of corticospinal excitability when compared to young adults (YAs) and OAs without clinically meaningful weakness. We also sought to estimate the relative contribution of indices of neural excitability and thigh lean mass in explaining the between-subject variability in OAs leg extensor strength. METHODS In 66 OAs (75.1 ± 7.0 years) and 20 YAs (22.0 ± 1.9 years), we quantified leg extensor strength, thigh lean mass, VIA, and motor evoked potential (MEP) amplitude and silent period (SP) duration. OAs were classified into weakness groups based on previously established strength/body weight (BW) cut points (Weak, Modestly Weak, or Not Weak). RESULTS The OAs had 63% less strength/BW when compared to YAs. Weak OAs exhibited higher levels of leg extensor VIA than Not Weak OAs (14.2 ± 7.5% vs 6.1 ± 7.5%). Weak OAs exhibited 24% longer SPs compared to Not Weak OAs, although this difference was insignificant (p = .06). The Weak OAs MEPs were half the amplitude of the Not Weak OAs. Regression analysis indicated that MEP amplitude, SP duration, and thigh lean mass explained ~62% of the variance in strength, with the neural excitability variables explaining ~33% of the variance and thigh lean mass explaining ~29%. CONCLUSION These findings suggest that neurotherapeutic interventions targeting excitability could be a viable approach to increase muscle strength in order to reduce the risk of physical impairments in late life.
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Affiliation(s)
- Leatha A Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens
- Department of Biomedical Sciences, Ohio University, Athens
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville
| | - Nathan P Wages
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens
- Department of Biomedical Sciences, Ohio University, Athens
| | - Janet E Simon
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens
- School of Applied Health Sciences and Wellness, Ohio University, Athens
| | - David W Russ
- School of Physical Therapy & Rehabilitation Sciences, University of South Florida, Tampa
| | - Brian C Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens
- Department of Biomedical Sciences, Ohio University, Athens
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26
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Baumann CW, Manini TM, Clark BC. Evaluation of a Strength-Training Program on Clinical Outcomes in Older Adults. JAMA 2021; 325:1111. [PMID: 33724318 PMCID: PMC8148633 DOI: 10.1001/jama.2021.0298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Cory W. Baumann
- Ohio Musculoskeletal and Neurological Institute and the Department of Biomedical Sciences at Ohio University, Athens, Ohio, USA
| | - Todd M. Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida, USA
| | - Brian C. Clark
- Ohio Musculoskeletal and Neurological Institute and the Department of Biomedical Sciences at Ohio University, Athens, Ohio, USA
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Mardini MT, Nerella S, Wanigatunga AA, Saldana S, Casanova R, Manini TM. Deep CHORES: Estimating Hallmark Measures of Physical Activity Using Deep Learning. AMIA Annu Symp Proc 2021; 2020:803-812. [PMID: 33936455 PMCID: PMC8075495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wrist accelerometers for assessing hallmark measures of physical activity (PA) are rapidly growing with the advent of smartwatch technology. Given the growing popularity of wrist-worn accelerometers, there needs to be a rigorous evaluation for recognizing (PA) type and estimating energy expenditure (EE) across the lifespan. Participants (66% women, aged 20-89 yrs) performed a battery of 33 daily activities in a standardized laboratory setting while a tri-axial accelerometer collected data from the right wrist. A portable metabolic unit was worn to measure metabolic intensity. We built deep learning networks to extract spatial and temporal representations from the time-series data, and used them to recognize PA type and estimate EE. The deep learning models resulted in high performance; the F1 score was: 0.82, 0.81, and 95 for recognizing sedentary, locomotor, and lifestyle activities, respectively. The root mean square error was 1.1 (+/-0.13) for the estimation of EE.
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Affiliation(s)
| | | | | | | | - Ramon Casanova
- Wake Forest University, Winston-Salem, North Carolina, USA
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28
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Brown JD, Wang CY, Groessl EJ, Pahor M, Manini TM. Three-Year, Postintervention, Follow-up Comparison of Health Care Resource Utilization and Costs in the Lifestyle Interventions and Independence for Elders (LIFE) Study. J Gerontol A Biol Sci Med Sci 2021; 76:272-276. [PMID: 32270182 DOI: 10.1093/gerona/glaa088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The Lifestyle Interventions and Independence for Elders (LIFE) Study physical activity (PA) intervention was found to be cost-effective compared to health education (HE). However, long-term effects postintervention are unknown. METHOD This was a secondary analysis of LIFE Study data linked to Medicare claims data (2014-2016). Participants were linked via Social Security Numbers to Medicare claims data. Utilization and cost variables were analyzed using generalized linear models with negative binomial and Tweedie distributions. Unadjusted means and 95% confidence intervals were compared by year and overall stratified. Each model compared PA versus HE and adjusted for other baseline characteristics and stratified by study site. Additional models were stratified by baseline physical functioning assessment scores. RESULTS Of the 1,635 LIFE Study participants, 804 (53.5%) were linked to Medicare claims with an average of 33 months of follow-up time during the 3-year data linkage period. Mean outpatient (6.6 vs 6.8), inpatient (0.40 vs 0.40), and other utilization metrics were similar between PA and HE groups. Costs were also similar for each group and each type of service, for example, outpatient: $2,070 versus $2,093 and inpatient: $4,704 versus $4,792. Regression results indicated no statistically significant differences between PA and HE groups. CONCLUSIONS While the LIFE Study demonstrated that PA reduced mobility disability in older adults and was cost-effective, it did not appear to affect long-term health care utilization costs posttrial. These findings suggest that it remains challenging to affect long-term health care costs using PA interventions effects.
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Affiliation(s)
- Joshua D Brown
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville.,Center for Drug Evaluation & Safety, University of Florida, Gainesville
| | - Ching-Yu Wang
- Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville
| | - Erik J Groessl
- Department of Family Medicine and Public Health, University of California San Diego, La Jolla.,VA San Diego Healthcare System, California
| | - Marco Pahor
- Department of Aging & Geriatric Research, University of Florida College of Medicine, Gainesville.,Institute on Aging, University of Florida, Gainesville
| | - Todd M Manini
- Department of Aging & Geriatric Research, University of Florida College of Medicine, Gainesville.,Institute on Aging, University of Florida, Gainesville
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29
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Mardini MT, Nerella S, Kheirkhahan M, Ranka S, Fillingim RB, Hu Y, Corbett DB, Cenko E, Weber E, Rashidi P, Manini TM. The Temporal Relationship Between Ecological Pain and Life-Space Mobility in Older Adults With Knee Osteoarthritis: A Smartwatch-Based Demonstration Study. JMIR Mhealth Uhealth 2021; 9:e19609. [PMID: 33439135 PMCID: PMC7840291 DOI: 10.2196/19609] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 09/18/2020] [Accepted: 10/20/2020] [Indexed: 11/30/2022] Open
Abstract
Background Older adults who experience pain are more likely to reduce their community and life-space mobility (ie, the usual range of places in an environment in which a person engages). However, there is significant day-to-day variability in pain experiences that offer unique insights into the consequences on life-space mobility, which are not well understood. This variability is complex and cannot be captured with traditional recall-based pain surveys. As a solution, ecological momentary assessments record repeated pain experiences throughout the day in the natural environment. Objective The aim of this study was to examine the temporal association between ecological momentary assessments of pain and GPS metrics in older adults with symptomatic knee osteoarthritis by using a smartwatch platform called Real-time Online Assessment and Mobility Monitor. Methods Participants (n=19, mean 73.1 years, SD 4.8; female: 13/19, 68%; male: 6/19, 32%) wore a smartwatch for a mean period of 13.16 days (SD 2.94). Participants were prompted in their natural environment about their pain intensity (range 0-10) at random time windows in the morning, afternoon, and evening. GPS coordinates were collected at 15-minute intervals and aggregated each day into excursion, ellipsoid, clustering, and trip frequency features. Pain intensity ratings were averaged across time windows for each day. A random effects model was used to investigate the within and between-person effects. Results The daily mean pain intensities reported by participants ranged between 0 and 8 with 40% reporting intensities ≥2. The within-person associations between pain intensity and GPS features were more likely to be statistically significant than those observed between persons. Within-person pain intensity was significantly associated with excursion size, and others (excursion span, total distance, and ellipse major axis) showed a statistical trend (excursion span: P=.08; total distance: P=.07; ellipse major axis: P=.07). Each point increase in the mean pain intensity was associated with a 3.06 km decrease in excursion size, 2.89 km decrease in excursion span, 5.71 km decrease total distance travelled per day, 31.4 km2 decrease in ellipse area, 0.47 km decrease ellipse minor axis, and 3.64 km decrease in ellipse major axis. While not statistically significant, the point estimates for number of clusters (P=.73), frequency of trips (P=.81), and homestay (P=.15) were positively associated with pain intensity, and entropy (P=.99) was negatively associated with pain intensity. Conclusions In this demonstration study, higher intensity knee pain in older adults was associated with lower life-space mobility. Results demonstrate that a custom-designed smartwatch platform is effective at simultaneously collecting rich information about ecological pain and life-space mobility. Such smart tools are expected to be important for remote health interventions that harness the variability in pain symptoms while understanding their impact on life-space mobility.
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Affiliation(s)
- Mamoun T Mardini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States.,Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, United States
| | - Subhash Nerella
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | | | - Sanjay Ranka
- Department of Computer and Information Science and Engineering, University of Florida, Gainesville, FL, United States
| | - Roger B Fillingim
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, United States
| | - Yujie Hu
- Department of Geography, University of Florida, Gainesville, FL, United States
| | - Duane B Corbett
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | - Erta Cenko
- Department of Epidemiology, University of Florida, Gainesville, FL, United States
| | - Eric Weber
- Department of Community Dentistry and Behavioral Science, University of Florida, Gainesville, FL, United States
| | - Parisa Rashidi
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
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30
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Picca A, Saini SK, Mankowski RT, Kamenov G, Anton SD, Manini TM, Buford TW, Wohlgemuth SE, Xiao R, Calvani R, Coelho-Júnior HJ, Landi F, Bernabei R, Hood DA, Marzetti E, Leeuwenburgh C. Altered Expression of Mitoferrin and Frataxin, Larger Labile Iron Pool and Greater Mitochondrial DNA Damage in the Skeletal Muscle of Older Adults. Cells 2020; 9:E2579. [PMID: 33276460 PMCID: PMC7760001 DOI: 10.3390/cells9122579] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 11/30/2020] [Indexed: 12/16/2022] Open
Abstract
Mitochondrial dysfunction and iron (Fe) dyshomeostasis are invoked among the mechanisms contributing to muscle aging, possibly via a detrimental mitochondrial-iron feed-forward loop. We quantified the labile Fe pool, Fe isotopes, and the expression of mitochondrial Fe handling proteins in muscle biopsies obtained from young and older adults. The expression of key proteins of mitochondrial quality control (MQC) and the abundance of the mitochondrial DNA common deletion (mtDNA4977) were also assessed. An inverse association was found between total Fe and the heavier Fe isotope (56Fe), indicating an increase in labile Fe abundance in cells with greater Fe content. The highest levels of labile Fe were detected in old participants with a Short Physical Performance Battery (SPPB) score ≤ 7 (low-functioning, LF). Protein levels of mitoferrin and frataxin were, respectively, higher and lower in the LF group relative to young participants and older adults with SPPB scores ≥ 11 (high-functioning, HF). The mtDNA4977 relative abundance was greater in old than in young participants, regardless of SPPB category. Higher protein levels of Pink1 were detected in LF participants compared with young and HF groups. Finally, the ratio between lipidated and non-lipidated microtubule-associated protein 1A/1B-light chain 3 (i.e., LC3B II/I), as well as p62 protein expression was lower in old participants regardless of SPPB scores. Our findings indicate that cellular and mitochondrial Fe homeostasis is perturbed in the aged muscle (especially in LF older adults), as reflected by altered levels of mitoferrin and frataxin, which, together with MQC derangements, might contribute to loss of mtDNA stability.
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Affiliation(s)
- Anna Picca
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, 00168 Rome, Italy; (A.P.); (R.C.); (F.L.); (R.B.)
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, SE-171 77 Stockholm, Sweden
| | - Sunil K. Saini
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - Robert T. Mankowski
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - George Kamenov
- Department of Geological Sciences, University of Florida, Gainesville, FL 32605, USA;
| | - Stephen D. Anton
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - Todd M. Manini
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - Thomas W. Buford
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205, USA;
| | - Stephanie E. Wohlgemuth
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - Rui Xiao
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
| | - Riccardo Calvani
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, 00168 Rome, Italy; (A.P.); (R.C.); (F.L.); (R.B.)
- Aging Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, SE-171 77 Stockholm, Sweden
| | - Hélio José Coelho-Júnior
- Institute of Internal Medicine and Geriatrics, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Francesco Landi
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, 00168 Rome, Italy; (A.P.); (R.C.); (F.L.); (R.B.)
- Institute of Internal Medicine and Geriatrics, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Roberto Bernabei
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, 00168 Rome, Italy; (A.P.); (R.C.); (F.L.); (R.B.)
- Institute of Internal Medicine and Geriatrics, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - David A. Hood
- Muscle Health Research Centre, School of Kinesiology and Health Science, York University, Toronto, ON M3J 1P3, Canada;
| | - Emanuele Marzetti
- Fondazione Policlinico Universitario “Agostino Gemelli” IRCCS, 00168 Rome, Italy; (A.P.); (R.C.); (F.L.); (R.B.)
- Institute of Internal Medicine and Geriatrics, Università Cattolica del Sacro Cuore, 00168 Rome, Italy;
| | - Christiaan Leeuwenburgh
- Department of Aging and Geriatric Research, Institute on Aging, University of Florida, Gainesville, FL 32611, USA; (S.K.S.); (R.T.M.); (S.D.A.); (T.M.M.); (S.E.W.); (R.X.); (C.L.)
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Anton SD, Cruz-Almeida Y, Singh A, Alpert J, Bensadon B, Cabrera M, Clark DJ, Ebner NC, Esser KA, Fillingim RB, Goicolea SM, Han SM, Kallas H, Johnson A, Leeuwenburgh C, Liu AC, Manini TM, Marsiske M, Moore F, Qiu P, Mankowski RT, Mardini M, McLaren C, Ranka S, Rashidi P, Saini S, Sibille KT, Someya S, Wohlgemuth S, Tucker C, Xiao R, Pahor M. Innovations in Geroscience to enhance mobility in older adults. Exp Gerontol 2020; 142:111123. [PMID: 33191210 PMCID: PMC7581361 DOI: 10.1016/j.exger.2020.111123] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 02/07/2023]
Abstract
Aging is the primary risk factor for functional decline; thus, understanding and preventing disability among older adults has emerged as an important public health challenge of the 21st century. The science of gerontology - or geroscience - has the practical purpose of "adding life to the years." The overall goal of geroscience is to increase healthspan, which refers to extending the portion of the lifespan in which the individual experiences enjoyment, satisfaction, and wellness. An important facet of this goal is preserving mobility, defined as the ability to move independently. Despite this clear purpose, this has proven to be a challenging endeavor as mobility and function in later life are influenced by a complex interaction of factors across multiple domains. Moreover, findings over the past decade have highlighted the complexity of walking and how targeting multiple systems, including the brain and sensory organs, as well as the environment in which a person lives, can have a dramatic effect on an older person's mobility and function. For these reasons, behavioral interventions that incorporate complex walking tasks and other activities of daily living appear to be especially helpful for improving mobility function. Other pharmaceutical interventions, such as oxytocin, and complementary and alternative interventions, such as massage therapy, may enhance physical function both through direct effects on biological mechanisms related to mobility, as well as indirectly through modulation of cognitive and socioemotional processes. Thus, the purpose of the present review is to describe evolving interventional approaches to enhance mobility and maintain healthspan in the growing population of older adults in the United States and countries throughout the world. Such interventions are likely to be greatly assisted by technological advances and the widespread adoption of virtual communications during and after the COVID-19 era.
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Affiliation(s)
- Stephen D Anton
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Yenisel Cruz-Almeida
- University of Florida, Department of Community Dentistry and Behavioral Science, 1329 SW Archer Road, Gainesville, FL 32610, United States.
| | - Arashdeep Singh
- University of Florida, Department of Pharmacodynamics, College of Pharmacy, 1345 Center Drive, Gainesville, FL 32610, United States.
| | - Jordan Alpert
- University of Florida, College of Journalism and Communications, Gainesville, FL 32610, United States.
| | - Benjamin Bensadon
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Melanie Cabrera
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - David J Clark
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Natalie C Ebner
- University of Florida, Department of Psychology, 945 Center Drive, Gainesville, FL 32611, United States.
| | - Karyn A Esser
- University of Florida, Department of Physiology and Functional Genomics, 1345 Center Drive, Gainesville, FL, United States.
| | - Roger B Fillingim
- University of Florida, Department of Community Dentistry and Behavioral Science, 1329 SW Archer Road, Gainesville, FL 32610, United States.
| | - Soamy Montesino Goicolea
- University of Florida, Department of Community Dentistry and Behavioral Science, 1329 SW Archer Road, Gainesville, FL 32610, United States.
| | - Sung Min Han
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Henrique Kallas
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Alisa Johnson
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Christiaan Leeuwenburgh
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Andrew C Liu
- University of Florida, Department of Physiology and Functional Genomics, 1345 Center Drive, Gainesville, FL, United States.
| | - Todd M Manini
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Michael Marsiske
- University of Florida, Department of Clinical & Health Psychology, 1225 Center Drive, Gainesville, FL 32610, United States.
| | - Frederick Moore
- University of Florida, Department of Surgery, Gainesville, FL 32610, United States.
| | - Peihua Qiu
- University of Florida, Department of Biostatistics, Gainesville, FL 32611, United States.
| | - Robert T Mankowski
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Mamoun Mardini
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Christian McLaren
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Sanjay Ranka
- University of Florida, Department of Computer & Information Science & Engineering, Gainesville, FL 32611, United States.
| | - Parisa Rashidi
- University of Florida, Department of Biomedical Engineering. P.O. Box 116131. Gainesville, FL 32610, United States.
| | - Sunil Saini
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Kimberly T Sibille
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Shinichi Someya
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Stephanie Wohlgemuth
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Carolyn Tucker
- University of Florida, Department of Psychology, 945 Center Drive, Gainesville, FL 32611, United States.
| | - Rui Xiao
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
| | - Marco Pahor
- University of Florida, Department of Aging and Geriatric Research, 2004 Mowry Road, Gainesville, FL 32611, United States.
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Brown JD, Alipour-Haris G, Pahor M, Manini TM. Association between a Deficit Accumulation Frailty Index and Mobility Outcomes in Older Adults: Secondary Analysis of the Lifestyle Interventions and Independence for Elders (LIFE) Study. J Clin Med 2020; 9:jcm9113757. [PMID: 33266358 PMCID: PMC7700674 DOI: 10.3390/jcm9113757] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/03/2020] [Accepted: 11/20/2020] [Indexed: 11/23/2022] Open
Abstract
Frailty is a geriatric syndrome represented by susceptibility to precipitating health events and reduced functional reserve. Frailty can be difficult to measure in clinical practice and research. One approach to approximate frailty is based on a deficit accumulation approach, which assesses a larger number of less specific measures such as the presence of comorbidities, physical or cognitive assessments, and lab tests, and summarizes these as a frailty index. The objective of this study was to develop such an index using the Lifestyle Interventions and Independence for Elders (LIFE) Study and evaluate the validity of the frailty measure derived based on baseline information via its association with the primary outcomes of the trial, namely major mobility disability (MMD) and persistent MMD (pMMD). Further, this study aimed to evaluate the effectiveness of the physical activity intervention among participants based on their baseline frailty score. Subjects in the LIFE Study were evaluated at baseline for demographics, clinical history, and a battery of physical and cognitive functioning assessments. In total, 75 possible deficits were scored either as present (yes/no) or based on each score’s quintiles for score-based assessments. The frailty index was measured as the total sum of deficits divided by the total number of possible deficits on a continuous scale between 0 and 100 (i.e., percent of deficits present). The frailty index was further divided into quintiles for comparison. A proportional hazards model was estimated for the MMD outcome controlling for other baseline information. A data driven approach was also used to determine relevant cut-offs in the frailty index where the trial intervention appeared to be modified. Among 1635 trial participants, the mean frailty index was 30.4 ± 6.6 and normally distributed. Over 2.5 years of average follow-up, 14.6%, 16.5%, 18.6%, 22.6%, and 27.6% of participants experienced MMD in quintiles 1–5, respectively. Each 1-unit increase in the frailty index increased the hazard of MMD by 4% (2–5%), and there was a nearly 2-fold increase in MMD between the highest and lowest frailty quintiles. Using log-rank criteria, a cut-point at the median was identified. Further, iterations tested for a frailty cut-off and indicated a subgroup beyond the 85th percentile wherein the physical activity intervention appeared to be no longer be effective. This internally derived deficit accumulation frailty index was uniquely able to identify individuals at higher risk of MMD and pMMD and showed that along the spectrum of frailty, the physical activity intervention remained effective for the majority of participants.
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Affiliation(s)
- Joshua D. Brown
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL 32610, USA;
- Correspondence:
| | - Golnoosh Alipour-Haris
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL 32610, USA;
| | - Marco Pahor
- Institute on Aging, University of Florida College of Pharmacy, Gainesville, FL 32610, USA; (M.P.); (T.M.M.)
| | - Todd M. Manini
- Institute on Aging, University of Florida College of Pharmacy, Gainesville, FL 32610, USA; (M.P.); (T.M.M.)
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Brown JD, Vouri SM, Manini TM. Survey-reported medication changes among older adults during the SARS-CoV-2 (COVID-19) pandemic. Res Social Adm Pharm 2020; 17:1478-1482. [PMID: 33221267 PMCID: PMC7659512 DOI: 10.1016/j.sapharm.2020.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/09/2020] [Accepted: 11/09/2020] [Indexed: 01/26/2023]
Abstract
Background Speculation on benefits and harms of prescription, over-the-counter and complementary medications has been widespread during the SARS-CoV-2 (or COVID-19) pandemic. This community-based survey assessed self-reported changes in medications including those stopped, started, or if access had been impacted. Methods A survey was collected via Research Electronic Data Capture (REDCap). The survey was advertised in the community through social media, email lists, websites, and post-cards. Survey responses were collected between 5/21/2020 and 6/24/2020. Variables included demographic characteristics such as age, sex, race, marital status, education, employment, income, and community type. Questions related to medication changes included: “Have you started any medication due to COVID-19?”, “Have you stopped any medication due to COVID-19?” and “Have you had issues getting your prescription medications?”. Respondents aged 50 years or older were included. Results There were N = 1397 responses of which 1169 were older adults ≥50 years-old. Of these, 1141 responded to the medication changes survey questions and 28 had missing responses and were excluded from the survey sample for this analysis. Among these, 31 (2.7%) reported a medication change included 5 (0.4%) reported stopping a medication, 18 (1.6%) reported starting a medication, and 8 (0.7%) reported trouble obtaining medications. Medications started included mostly vitamins or other supplements including zinc (n = 9), vitamin C (6), and other supplements (3). Among prescription medications, antidepressants and anti-anxiety medications (4) were reported as well as aspirin (1), losartan (1), and low dose naltrexone (1). One respondent reported unidentified homeopathy. There were no significant differences between those with medication changes and those with none. Conclusions In this community-based survey sample of over one thousand older adults, only a small percentage (2.7%; n = 31) reported any changes to medications during the pandemic. As essential workers during this crisis, pharmacists have played a critical role in providing medication information and continued access.
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Affiliation(s)
- Joshua D Brown
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL, USA.
| | - Scott M Vouri
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL, USA
| | - Todd M Manini
- Institute on Aging, Division of Epidemiology and Data Science in Gerontology, Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL, USA.
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Alpert JM, Kota NSP, Ranka S, Mendoza TV, Solberg LM, Rashidi P, Manini TM. A Simulated Graphical Interface for Integrating Patient-Generated Health Data From Smartwatches With Electronic Health Records: Usability Study. JMIR Hum Factors 2020; 7:e19769. [PMID: 33124988 PMCID: PMC7665942 DOI: 10.2196/19769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 07/19/2020] [Accepted: 08/26/2020] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Wearable technology, such as smartwatches, can capture valuable patient-generated data and help inform patient care. Electronic health records provide logical and practical platforms for including such data, but it is necessary to evaluate the way the data are presented and visualized. OBJECTIVE The aim of this study is to evaluate a graphical interface that displays patients' health data from smartwatches, mimicking the integration within the environment of electronic health records. METHODS A total of 12 health care professionals evaluated a simulated interface using a usability scale questionnaire, testing the clarity of the interface, colors, usefulness of information, navigation, and readability of text. RESULTS The interface was positively received, with 14 out of the 16 questions generating a score of 5 or greater among at least 75% of participants (9/12). On an 8-point Likert scale, the highest rated features of the interface were quick turnaround times (mean score 7.1), readability of the text (mean score 6.8), and use of terminology/abbreviations (mean score 6.75). CONCLUSIONS Collaborating with health care professionals to develop and refine a graphical interface for visualizing patients' health data from smartwatches revealed that the key elements of the interface were acceptable. The implementation of such data from smartwatches and other mobile devices within electronic health records should consider the opinions of key stakeholders as the development of this platform progresses.
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Affiliation(s)
- Jordan M Alpert
- Department of Advertising, College of Journalism and Communications, University of Florida, Gainesville, FL, United States
| | - Naga S Prabhakar Kota
- Department of Computer & Information Science & Engineering, University of Florida, Gainesville, FL, United States
| | - Sanjay Ranka
- Department of Computer & Information Science & Engineering, University of Florida, Gainesville, FL, United States
| | - Tonatiuh V Mendoza
- Department of Health Outcomes and Biomedical Informatics, University of Florida, Gainesville, FL, United States
| | - Laurence M Solberg
- College of Nursing, University of Florida, Gainesville, FL, United States
- Geriatrics Research, Education and Clinical Center (GRECC), Veterans Health Administration, NF/SG VHS, Gainesville, FL, United States
| | - Parisa Rashidi
- Department of Computer & Information Science & Engineering, University of Florida, Gainesville, FL, United States
- J Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
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Gill TM, Bhasin S, Reuben DB, Latham NK, Araujo K, Ganz DA, Boult C, Wu AW, Magaziner J, Alexander N, Wallace RB, Miller ME, Travison TG, Greenspan SL, Gurwitz JH, Rich J, Volpi E, Waring SC, Manini TM, Min LC, Teresi J, Dykes PC, McMahon S, McGloin JM, Skokos EA, Charpentier P, Basaria S, Duncan PW, Storer TW, Gazarian P, Allore HG, Dziura J, Esserman D, Carnie MB, Hanson C, Ko F, Resnick NM, Wiggins J, Lu C, Meng C, Goehring L, Fagan M, Correa-de-Araujo R, Casteel C, Peduzzi P, Greene EJ. Effect of a Multifactorial Fall Injury Prevention Intervention on Patient Well-Being: The STRIDE Study. J Am Geriatr Soc 2020; 69:173-179. [PMID: 33037632 PMCID: PMC8178516 DOI: 10.1111/jgs.16854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/02/2020] [Accepted: 09/06/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND/OBJECTIVES In the Strategies to Reduce Injuries and Develop Confidence in Elders (STRIDE) study, a multifactorial intervention was associated with a nonsignificant 8% reduction in time to first serious fall injury but a significant 10% reduction in time to first self-reported fall injury relative to enhanced usual care. The effect of the intervention on other outcomes important to patients has not yet been reported. We aimed to evaluate the effect of the intervention on patient well-being including concern about falling, anxiety, depression, physical function, and disability. DESIGN Pragmatic cluster-randomized trial of 5,451 community-living persons at high risk for serious fall injuries. SETTING A total of 86 primary care practices within 10 U.S. healthcare systems. PARTICIPANTS A random subsample of 743 persons aged 75 and older. MEASUREMENTS The well-being measures, assessed at baseline, 12 months, and 24 months, included a modified version of the Fall Efficacy Scale, Patient-Reported Outcomes Measurement Information System (PROMIS) anxiety and depression scales, and Late-Life Function and Disability Instrument. RESULTS Participants in the intervention (n = 384) and control groups (n = 359) were comparable in age: mean (standard deviation) of 81.9 (4.7) versus 81.8 (5.0) years. Mean scores were similar between groups at 12 and 24 months for concern about falling, physical function, and disability, whereas the intervention group's mean scores on anxiety and depression were .7 points lower (i.e., better) at 12 months and .6 to .8 points lower at 24 months. For each of these outcomes, differences between the groups' adjusted least square mean changes from baseline to 12 and 24 months, respectively, were quantitatively small. The overall difference in means between groups over 2 years was statistically significant only for depression, favoring the intervention: -1.19 (99% confidence interval, -2.36 to -.02), with 3.5 points representing a minimally important difference. CONCLUSIONS STRIDE's multifactorial intervention to reduce fall injuries was not associated with clinically meaningful improvements in patient well-being.
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Affiliation(s)
- Thomas M Gill
- Yale Claude D. Pepper Older Americans Independence Center, Yale University, New Haven, Connecticut, USA
| | - Shalender Bhasin
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - David B Reuben
- Multicampus Program in Geriatric Medicine and Gerontology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Nancy K Latham
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Katy Araujo
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - David A Ganz
- Multicampus Program in Geriatric Medicine and Gerontology, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.,Geriatric Research, Education and Clinical Center; Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California, USA
| | - Chad Boult
- Johns Hopkins University, Baltimore, Maryland, USA
| | - Albert W Wu
- Johns Hopkins University, Baltimore, Maryland, USA
| | - Jay Magaziner
- University of Maryland School of Medicine, Baltimore, Maryland, USA
| | | | | | - Michael E Miller
- School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Thomas G Travison
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Marcus Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Boston, Massachusetts, USA
| | - Susan L Greenspan
- Pittsburgh Claude D. Pepper Older Americans Independence Center, Division of Geriatrics and Gerontology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Jerry H Gurwitz
- Meyers Primary Care Institute, A Joint Endeavor of Reliant Medical Group, Fallon Health and University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Jeremy Rich
- HealthCare Partners, El Segundo, California, USA
| | - Elena Volpi
- University of Texas Medical Branch Claude D. Pepper Older Americans Independence Center; Sealy Center on Aging, The University of Texas Medical Branch, Galveston, Texas, USA
| | | | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida, USA
| | | | - Jeanne Teresi
- Research Division, Hebrew Home at Riverdale, RiverSpring Health, Bronx, New York, USA
| | | | - Siobhan McMahon
- School of Nursing, University of Minnesota, Minneapolis, Minnesota, USA
| | - Joanne M McGloin
- Yale Claude D. Pepper Older Americans Independence Center, Yale University, New Haven, Connecticut, USA
| | - Eleni A Skokos
- Yale Claude D. Pepper Older Americans Independence Center, Yale University, New Haven, Connecticut, USA
| | - Peter Charpentier
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - Shehzad Basaria
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Pamela W Duncan
- School of Medicine, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Thomas W Storer
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Priscilla Gazarian
- Brigham and Women's Hospital, Boston, Massachusetts, USA.,University of Massachusetts, Boston, Massachusetts, USA
| | - Heather G Allore
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - James Dziura
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - Denise Esserman
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | | | | | - Fred Ko
- Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Neil M Resnick
- Pittsburgh Claude D. Pepper Older Americans Independence Center, Division of Geriatrics and Gerontology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | | | - Charles Lu
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - Can Meng
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - Lori Goehring
- Boston Claude D. Pepper Older Americans Independence Center, Research Program in Men's Health: Aging and Metabolism, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Maureen Fagan
- University of Miami Health System, Miami, Florida, USA
| | | | | | - Peter Peduzzi
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
| | - Erich J Greene
- Yale Center for Analytical Sciences, Yale University, New Haven, Connecticut, USA
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Wages NP, Simon JE, Clark LA, Amano S, Russ DW, Manini TM, Clark BC. Relative contribution of muscle strength, lean mass, and lower extremity motor function in explaining between-person variance in mobility in older adults. BMC Geriatr 2020; 20:255. [PMID: 32723298 PMCID: PMC7385889 DOI: 10.1186/s12877-020-01656-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 07/15/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Approximately 35% of individuals > 70 years have mobility limitations. Historically, it was posited lean mass and muscle strength were major contributors to mobility limitations, but recent findings indicate lean mass and muscle strength only moderately explain mobility limitations. One likely reason is that lean mass and muscle strength do not necessarily incorporate measures globally reflective of motor function (defined as the ability to learn, or to demonstrate, the skillful and efficient assumption, maintenance, modification, and control of voluntary postures and movement patterns). In this study we determined the relative contribution of lean mass, muscle strength, and the four square step test, as an index of lower extremity motor function, in explaining between-participant variance in mobility tasks. METHODS In community-dwelling older adults (N = 89; 67% women; mean 74.9 ± 6.7 years), we quantified grip and leg extension strength, total and regional lean mass, and time to complete the four square step test. Mobility was assessed via 6-min walk gait speed, stair climb power, 5x-chair rise time, and time to complete a complex functional task. Multifactorial linear regression modeling was used to determine the relative contribution (via semi-partial r2) for indices of lean mass, indices of muscle strength, and the four square step test. RESULTS When aggregated by sex, the four square step test explained 17-34% of the variance for all mobility tasks (p < 0.01). Muscle strength explained ~ 12% and ~ 7% of the variance in 6-min walk gait speed and 5x-chair rise time, respectively (p < 0.02). Lean mass explained 32% and ~ 4% of the variance in stair climb power and complex functional task time, respectively (p < 0.02). When disaggregated by sex, lean mass was a stronger predictor of mobility in men. CONCLUSION The four square step test is uniquely associated with multiple measures of mobility in older adults, suggesting lower extremity motor function is an important factor for mobility performance. TRIAL REGISTRATION NCT02505529 -2015/07/22.
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Affiliation(s)
- Nathan P Wages
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, 250 Irvine Hall, 1, Athens, OH, 43147, USA
- Department of Biomedical Sciences, Ohio University, 250 Irvine Hall, Athens, OH, 43147, USA
| | - Janet E Simon
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, 250 Irvine Hall, 1, Athens, OH, 43147, USA
- School of Applied Health Sciences and Wellness, Ohio University, Athens, OH, USA
| | - Leatha A Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, 250 Irvine Hall, 1, Athens, OH, 43147, USA
- Department of Biomedical Sciences, Ohio University, 250 Irvine Hall, Athens, OH, 43147, USA
- Department of Family Medicine, Ohio University, Athens, OH, USA
| | - Shinichi Amano
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, 250 Irvine Hall, 1, Athens, OH, 43147, USA
- Xenoma Inc., Ota-Ku, Tokyo, Japan
| | - David W Russ
- University of South Florida Morsani College of Medicine, School of Physical Therapy & Rehabilitation Sciences, Tampa, FL, USA
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - Brian C Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, 250 Irvine Hall, 1, Athens, OH, 43147, USA.
- Department of Biomedical Sciences, Ohio University, 250 Irvine Hall, Athens, OH, 43147, USA.
- Division of Geriatric Medicine, Ohio University, 250 Irvine Hall, Athens, OH, 43147, USA.
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Brown JD, Lo-Ciganic WH, Shao H, Pahor M, Manini TM. Trajectories of Short Physical Performance Battery Are Strongly Associated with Future Major Mobility Disability: Results from the LIFE Study. J Clin Med 2020; 9:jcm9082332. [PMID: 32707877 PMCID: PMC7465072 DOI: 10.3390/jcm9082332] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 01/06/2023] Open
Abstract
Short Physical Performance Battery (SPPB) assessment is a widely used measure of lower extremity function, strength, and balance. In the Lifestyles Interventions and Independence for Elders (LIFE) Study, baseline SPPB and changes throughout the trial were strongly associated with major mobility disability (MMD). This study further investigated this association by identifying trajectories of SPPB and evaluating the predictive validity of SPPB trajectories for future MMD. Participants (n = 1635) aged 70-89 years were randomized to a physical activity or health education intervention and assessed every 6 months for MMD. We used group-based trajectory models (GBTMs) to identify trajectories of a binary outcome for a decrease from baseline SPPB of ≥1. Multinomial logistic regression explored baseline factors associated with group membership. Survival analyses evaluated the association between trajectories with MMD. The GBTM identified a 3-group model which included a "No Decline" group (46.0%), "Late Decline" group (27.7%), and an "Early Decline" group (26.3%). Adjusting for all other baseline characteristics, group assignment during the previous follow-up visit was strongly associated with MMD at the subsequent period. Comparisons between groups showed a 2-to-3-fold increase in MMD comparing the "Late" to "No" decline group and a 4-to-5-fold increase in MMD comparing the "Early" to "No" decline group. Group membership and impact on MMD was not different between intervention arms. Group-based trajectories of SPPB scores identified distinct subgroups in LIFE Study participants. Using these group assignments in outcome models were highly associated with MMD. GBTMs have potential to identify and improve prediction of aging-related decline to better design and identify patients for interventions.
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Affiliation(s)
- Joshua D. Brown
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL 32610, USA; (W.-H.L.-C.); (H.S.)
- Correspondence:
| | - Wei-Hsuan Lo-Ciganic
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL 32610, USA; (W.-H.L.-C.); (H.S.)
| | - Hui Shao
- Center for Drug Evaluation & Safety, Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, FL 32610, USA; (W.-H.L.-C.); (H.S.)
| | - Marco Pahor
- Institute on Aging, Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL 32610, USA; (M.P.); (T.M.M.)
| | - Todd M. Manini
- Institute on Aging, Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville, FL 32610, USA; (M.P.); (T.M.M.)
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Bhasin S, Travison TG, Manini TM, Patel S, Pencina KM, Fielding RA, Magaziner JM, Newman AB, Kiel DP, Cooper C, Guralnik JM, Cauley JA, Arai H, Clark BC, Landi F, Schaap LA, Pereira SL, Rooks D, Woo J, Woodhouse LJ, Binder E, Brown T, Shardell M, Xue QL, DʼAgostino RB, Orwig D, Gorsicki G, Correa-De-Araujo R, Cawthon PM. Sarcopenia Definition: The Position Statements of the Sarcopenia Definition and Outcomes Consortium. J Am Geriatr Soc 2020; 68:1410-1418. [PMID: 32150289 DOI: 10.1111/jgs.16372] [Citation(s) in RCA: 306] [Impact Index Per Article: 76.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 01/25/2020] [Accepted: 01/29/2020] [Indexed: 01/28/2023]
Abstract
OBJECTIVES To develop an evidence-based definition of sarcopenia that can facilitate identification of older adults at risk for clinically relevant outcomes (eg, self-reported mobility limitation, falls, fractures, and mortality), the Sarcopenia Definition and Outcomes Consortium (SDOC) crafted a set of position statements informed by a literature review and SDOC's analyses of eight epidemiologic studies, six randomized clinical trials, four cohort studies of special populations, and two nationally representative population-based studies. METHODS Thirteen position statements related to the putative components of a sarcopenia definition, informed by the SDOC analyses and literature synthesis, were reviewed by an independent international expert panel (panel) iteratively and voted on by the panel during the Sarcopenia Position Statement Conference. Four position statements related to grip strength, three to lean mass derived from dual-energy x-ray absorptiometry (DXA), and four to gait speed; two were summary statements. RESULTS The SDOC analyses identified grip strength, either absolute or scaled to measures of body size, as an important discriminator of slowness. Both low grip strength and low usual gait speed independently predicted falls, self-reported mobility limitation, hip fractures, and mortality in community-dwelling older adults. Lean mass measured by DXA was not associated with incident adverse health-related outcomes in community-dwelling older adults with or without adjustment for body size. CONCLUSION The panel agreed that both weakness defined by low grip strength and slowness defined by low usual gait speed should be included in the definition of sarcopenia. These position statements offer a rational basis for an evidence-based definition of sarcopenia. The analyses that informed these position statements are summarized in this article and discussed in accompanying articles in this issue of the journal. J Am Geriatr Soc 68:1410-1418, 2020.
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Affiliation(s)
- Shalender Bhasin
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Thomas G Travison
- Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School, Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida
| | - Sheena Patel
- California Pacific Medical Center Research Institute, San Francisco Coordinating Center, San Francisco, California
| | - Karol M Pencina
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Roger A Fielding
- Nutrition, Exercise, Physiology, and Sarcopenia Laboratory, Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | - Jay M Magaziner
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Anne B Newman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Douglas P Kiel
- Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School, Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts
| | - Cyrus Cooper
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK
| | - Jack M Guralnik
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Hidenori Arai
- National Center for Geriatrics and Gerontology, Obu, Japan
| | - Brian C Clark
- Department of Biomedical Sciences, Division of Geriatric Medicine, Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, Ohio
| | - Francesco Landi
- Department of Medicine and geriatrics, Catholic University of Sacred Heart, Rome, Italy
| | - Laura A Schaap
- Department of Health Sciences, Faculty of Science, Vrije Universiteit Amsterdam, Amsterdam Public Health Research institute, Amsterdam, The Netherlands
| | | | - Daniel Rooks
- Muscle Group, Translational Medicine, Novartis Institutes for Biomedical Research, Cambridge, Massachusetts
| | - Jean Woo
- CUHK Jockey Club Institute of Ageing, SH Ho Centre for Gerontology and Geriatrics, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Linda J Woodhouse
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Ellen Binder
- Division of Geriatrics, Washington University School of Medicine, St. Louis, Missouri
| | - Todd Brown
- Division of Endocrinology, Diabetes, & Metabolism, Johns Hopkins University, Baltimore, Maryland
| | - Michelle Shardell
- Epidemiology and Public Health, Longitudinal Studies Section, National Institute on Aging, Baltimore, Maryland
| | - Quian-Li Xue
- Division of Geriatric Medicine and Gerontology and Center on Aging and Health, Johns Hopkins Medical Institute, Baltimore, Maryland
| | - Ralph B DʼAgostino
- Department of Mathematics, Framingham Heart Study, Boston University, Boston, Massachusetts
| | - Denise Orwig
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Greg Gorsicki
- Department of Kinesiology, Georgia Southern University
| | - Rosaly Correa-De-Araujo
- Division of Geriatrics and Clinical Gerontology, National Institute on Aging, Bethesda, Maryland
| | - Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco Coordinating Center, San Francisco, California
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Manini TM, Patel SM, Newman AB, Travison TG, Kiel DP, Shardell MD, Pencina KM, Wilson KE, Kelly TL, Massaro JM, Fielding RA, Magaziner J, Correa-de-Araujo R, Kwok TCY, Hirani V, Karlsson MK, DʼAgostino RB, Mellström D, Ohlsson C, Ribom E, Jordan JM, Bhasin S, Cawthon PM. Identification of Sarcopenia Components That Discriminate Slow Walking Speed: A Pooled Data Analysis. J Am Geriatr Soc 2020; 68:1419-1428. [PMID: 32633834 PMCID: PMC8018524 DOI: 10.1111/jgs.16524] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/20/2020] [Accepted: 03/18/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND The Sarcopenia Definitions and Outcomes Consortium (SDOC) sought to identify cut points for muscle strength and body composition measures derived from dual-energy x-ray absorptiometry (DXA) that discriminate older adults with slow walking speed. This article presents the core analyses used to guide the SDOC position statements. DESIGN Cross-sectional data analyses of pooled data. SETTING University-based research assessment centers. PARTICIPANTS Community-dwelling men (n = 13,652) and women: (n = 5,115) with information on lean mass by DXA, grip strength (GR), and walking speed. MEASUREMENTS Thirty-five candidate sarcopenia variables were entered into sex-stratified classification and regression tree (CART) models to agnostically choose variables and cut points that discriminate slow walkers (<0.80 m/s). Models with alternative walking speed outcomes were also evaluated (<0.60 and <1.0 m/s and walking speed treated continuously). RESULTS CART models identified GR/body mass index (GRBMI) and GR/total body fat (GRTBF) as the primary discriminating variables for slowness in men and women, respectively. Men with GRBMI of 1.05 kg/kg/m2 or less were approximately four times more likely to be slow walkers than those with GRBMI of greater than 1.05 kg/kg/m2 . Women with GRTBF of less than 0.65 kg/kg were twice as likely to be slow walkers than women with GRTBF of 0.65 kg/kg or greater. Models with alternative walking speed outcomes selected only functions of GR as primary discriminators of slowness in both men and women. DXA-derived lean mass measures did not consistently discriminate slow walkers. CONCLUSION GR with and without adjustments for body size and composition consistently discriminated older adults with slowness. CART models did not select DXA-based lean mass as a primary discriminator of slowness. These results were presented to an SDOC Consensus Panel, who used them and other information to develop the SDOC Position Statements. J Am Geriatr Soc 68:1419-1428, 2020.
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Affiliation(s)
- Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida, USA
| | - Sheena M Patel
- California Pacific Medical Research Institute, San Francisco, California, USA
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Thomas G Travison
- Department of Medicine, Harvard Medical School and Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts, USA
| | - Douglas P Kiel
- Department of Medicine, Harvard Medical School and Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts, USA
| | - Michelle D Shardell
- Institute for Genomes Sciences, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Karol M Pencina
- Department of Medicine, Harvard Medical School and Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts, USA
| | | | | | - Joseph M Massaro
- Department of Biostatistics, Boston University, Boston, Massachusetts, USA
| | | | - Jay Magaziner
- Department of Epidemiology, University of Maryland Baltimore, Baltimore, Maryland, USA
| | - Rosaly Correa-de-Araujo
- Division of Geriatrics and Clinical Gerontology, US Department of Health and Human Services, National Institute on Aging, National Institutes of Health, Bethesda, Maryland, USA
| | - Timothy C Y Kwok
- The Chinese University, Hong Kong Special Administrative Region, China
| | - Vasant Hirani
- University of Sydney, Sydney, New South Wales, Australia
| | | | | | | | | | | | - Joanne M Jordan
- University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA
| | - Shalender Bhasin
- Department of Medicine, Harvard Medical School and Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife, Boston, Massachusetts, USA
| | - Peggy M Cawthon
- California Pacific Medical Research Institute, San Francisco, California, USA
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40
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Fanning J, Rejeski WJ, Chen SH, Nicklas BJ, Walkup MP, Axtell RS, Fielding RA, Glynn NW, King AC, Manini TM, McDermott MM, Newman AB, Pahor M, Tudor-Locke C, Miller ME. A Case for Promoting Movement Medicine: Preventing Disability in the LIFE Randomized Controlled Trial. J Gerontol A Biol Sci Med Sci 2020; 74:1821-1827. [PMID: 30778518 DOI: 10.1093/gerona/glz050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The movement profile of older adults with compromised function is unknown, as is the relationship between these profiles and the development of major mobility disability (MMD)-a critical clinical outcome. We first describe the dimensions of movement in older adults with compromised function and then examine whether these dimensions predict the onset of MMD. METHODS Older adults at risk for MMD (N = 1,022, mean age = 78.7 years) were randomized to receive a structured physical activity intervention or health education control. We assessed MMD in 6-month intervals (average follow-up of 2.2 years until incident MMD), with activity assessed at baseline, 6-, 12- and 24-month follow-up via accelerometry. RESULTS A principal components analysis of 11 accelerometer-derived metrics yielded three components representing lifestyle movement (LM), extended bouts of moderate-to-vigorous physical activity (MVPA), and stationary body posture. LM accounted for the greatest proportion of variance in movement (53%). Within health education, both baseline LM (HR = 0.74; 95% CI 0.62 to 0.88) and moderate-to-vigorous physical activity (HR = 0.69; 95% CI 0.54 to 0.87) were associated with MMD, whereas only LM was associated with MMD within physical activity (HR = 0.74; 95% CI 0.61 to 0.89). There were similar nonlinear relationships present for LM in both physical activity and health education (p < .04), whereby risk for MMD was lower among individuals with higher levels of LM. CONCLUSIONS Both LM and moderate-to-vigorous physical activity should be central in treatment regimens for older adults at risk for MMD. TRIAL REGISTRATION clinicaltrials.gov Identifier NCT01072500.
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Affiliation(s)
- Jason Fanning
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina.,Department of internal medicine, section on gerontology and geriatric medicine, Winston-Salem, North Carolina
| | - W Jack Rejeski
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, North Carolina
| | - Shyh-Huei Chen
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Barbara J Nicklas
- Department of internal medicine, section on gerontology and geriatric medicine, Winston-Salem, North Carolina
| | - Michael P Walkup
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Robert S Axtell
- Department of Exercise Science, Southern Connecticut State University, New Haven
| | - Roger A Fielding
- Jean Mayer USDA Human Nutrition Research Center on Aging, Nutrition, Exercise Physiology and Sarcopenia Laboratory, Tufts University, Boston, Massachusetts
| | - Nancy W Glynn
- Department of epidemiology, University of Pittsburgh, Pennsylvania
| | - Abby C King
- Department of Health Research and Policy and Stanford Prevention Research Center, Palo Alto, California
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville
| | - Mary M McDermott
- Devision of General Internal medicine and Geriatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Anne B Newman
- Department Epidemiology and Medicine, University of Pittsburgh, Pennsylvania
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville
| | - Catrine Tudor-Locke
- Department of Kinesiology, University of Massachusetts Amherst, Amherst, Massachusetts
| | - Michael E Miller
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Cauley JA, Manini TM, Lovato L, Talton J, Anton SD, Domanchuk K, Kennedy K, Stowe CL, Walkup M, Fielding RA, Kritchevsky SB, McDermott MM, Newman AB, Ambrosius WT, Pahor M. The Enabling Reduction of Low-Grade Inflammation in Seniors (ENRGISE) Pilot Study: Screening Methods and Recruitment Results. J Gerontol A Biol Sci Med Sci 2020; 74:1296-1302. [PMID: 30202946 DOI: 10.1093/gerona/gly204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The Enabling Reduction of Low-grade Inflammation in Seniors (ENRGISE) Pilot Study is a multicenter randomized clinical trial examining the feasibility of testing whether omega-3 fish oil (ω-3) and the angiotensin receptor blocker losartan alone or in combination can reduce inflammation and improve walking speed in older adults with mobility impairment. We describe recruitment methods and results. METHODS Eligible participants were 70 years and older, had elevated interleukin-6 levels (2.5-30 pg/mL) and mobility impairment. RESULTS Of those who responded to recruitment, 83% responded to mailings. A total of 5,424 telephone screens were completed; of these, 2,011 (37.1%) were eligible for further screening. The most common reasons for ineligibility at the telephone screens were lack of mobility impairment or use of angiotensin receptor blockers or angiotensin-converting enzyme inhibitors (n=1.789). Of the 1,305 initial screening visits, 1,087 participants had slow gait speed (<1 m/s). Of these, 701 (64%) had elevated interleukin-6 and were eligible for second screening visits. Of the 582 second screening visits, 335 (57.6%) were eligible to be randomized. A total of 289 participants (96% of goal) were randomized: 180 in the ω-3 stratum (240% of goal); 43 in the losartan (57% of goal), and 66 in the combination (44% of goal). The telephone screen and first screening visit to randomization ratio was 19 to 1 and 4.5 to 1, respectively. The estimated cost of recruitment per randomized participant was $1,782. CONCLUSION Recruitment for ω-3 exceeded goals, but goals for the losartan and combination strata were not met due to the high proportion of participants taking angiotensin receptor blockers or angiotensin-converting enzyme inhibitors.
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Affiliation(s)
- Jane A Cauley
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville
| | - Laura Lovato
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Jennifer Talton
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Steven D Anton
- Department of Aging and Geriatric Research, University of Florida, Gainesville
| | - Kathryn Domanchuk
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Kimberly Kennedy
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Cynthia L Stowe
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Michael Walkup
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Roger A Fielding
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | - Stephen B Kritchevsky
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Mary M McDermott
- Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Anne B Newman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Walter T Ambrosius
- Department of Radiology, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville
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42
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Cawthon PM, Travison TG, Manini TM, Patel S, Pencina KM, Fielding RA, Magaziner JM, Newman AB, Brown T, Kiel DP, Cummings SR, Shardell M, Guralnik JM, Woodhouse LJ, Pahor M, Binder E, D’Agostino RB, Quian-Li X, Orwoll E, Landi F, Orwig D, Schaap L, Latham NK, Hirani V, Kwok T, Pereira SL, Rooks D, Kashiwa M, Torres-Gonzalez M, Menetski JP, Correa-De-Araujo R, Bhasin S. Establishing the Link Between Lean Mass and Grip Strength Cut Points With Mobility Disability and Other Health Outcomes: Proceedings of the Sarcopenia Definition and Outcomes Consortium Conference. J Gerontol A Biol Sci Med Sci 2020; 75:1317-1323. [PMID: 30869772 PMCID: PMC7447857 DOI: 10.1093/gerona/glz081] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 03/13/2019] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Lack of consensus on how to diagnose sarcopenia has limited the ability to diagnose this condition and hindered drug development. The Sarcopenia Definitions and Outcomes Consortium (SDOC) was formed to develop evidence-based diagnostic cut points for lean mass and/or muscle strength that identify people at increased risk of mobility disability. We describe here the proceedings of a meeting of SDOC and other experts to discuss strategic considerations in the development of evidence-based sarcopenia definition. METHODS Presentations and panel discussions reviewed the usefulness of sarcopenia as a biomarker, the analytical approach used by SDOC to establish cut points, and preliminary findings, and provided strategic direction to develop an evidence-based definition of sarcopenia. RESULTS The SDOC assembled data from eight epidemiological cohorts consisting of 18,831 participants, clinical populations from 10 randomized trials and observational studies, and 2 nationally representative cohorts. In preliminary assessments, grip strength or grip strength divided by body mass index was identified as discriminators of risk for mobility disability (walking speed <0.8 m/s), whereas dual-energy X-ray absorptiometry-derived lean mass measures were not good discriminators of mobility disability. Candidate definitions based on grip strength variables were associated with increased risk of mortality, falls, mobility disability, and instrumental activities of daily living disability. The prevalence of low grip strength increased with age. The attendees recommended the establishment of an International Expert Panel to review a series of position statements on sarcopenia definition that are informed by the findings of the SDOC analyses and synthesis of literature. CONCLUSIONS International consensus on an evidence-based definition of sarcopenia is needed. Grip strength-absolute or adjusted for body mass index-is an important discriminator of mobility disability and other endpoints. Additional research is needed to develop a predictive risk model that takes into account sarcopenia components as well as age, sex, race, and comorbidities.
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Affiliation(s)
- Peggy M Cawthon
- California Pacific Medical Center Research Institute, San Francisco Coordinating Center, California
| | - Thomas G Travison
- Department of Medicine, Marcus Institute for Aging Research, Hebrew SeniorLife, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts
| | | | - Sheena Patel
- California Pacific Medical Center Research Institute, San Francisco Coordinating Center, California
| | - Karol M Pencina
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Roger A Fielding
- Nutrition, Exercise Physiology and Sarcopenia Laboratory, Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | - Jay M Magaziner
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pennsylvania
| | - Todd Brown
- Division of Endocrinology, Diabetes, and Metabolism, Johns Hopkins University, Baltimore, Maryland
| | - Douglas P Kiel
- Department of Medicine, Marcus Institute for Aging Research, Hebrew SeniorLife, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts,Longitudinal Studies Section, The National Institute on Aging, Baltimore, Maryland
| | - Steve R Cummings
- California Pacific Medical Center Research Institute, San Francisco Coordinating Center, California
| | - Michelle Shardell
- Longitudinal Studies Section, The National Institute on Aging, Baltimore, Maryland
| | - Jack M Guralnik
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | - Linda J Woodhouse
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Canada
| | | | - Ellen Binder
- Division of Geriatrics, Washington University School of Medicine, St Louis, Missouri
| | - Ralph B D’Agostino
- Department of Mathematics, Framingham Heart Study, Boston University, Massachusetts
| | - Xue Quian-Li
- Director of Biostatistics, Division of Geriatric Medicine and Gerontology and Center on Aging and Health, Johns Hopkins Medical Institute, Baltimore, Maryland
| | - Eric Orwoll
- Division of Endocrinology, Metabolism and Clinical Nutrition, Oregon Health and Sciences University, Portland
| | - Francesco Landi
- Department of Medicine and Geriatrics, Catholic University of Sacred Heart, Rome, Italy
| | - Denise Orwig
- Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore
| | - Laura Schaap
- Faculty of Science, Nutrition and Health Aging and Later Life, Free University of Amsterdam, The Netherlands
| | - Nancy K Latham
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
| | - Vasant Hirani
- School of Life and Environmental Sciences, University of Sydney, Australia
| | - Timothy Kwok
- Department of Medicine and Therapeutics, Faculty of Medicine,School of Public Health, The Chinese University of Hong Kong, China
| | | | - Daniel Rooks
- Novartis Biomedical Research Institute, Cambridge, Massachusetts
| | | | | | - Joseph P Menetski
- The Foundation for the National Institutes of Health, Bethesda, Maryland
| | | | - Shalender Bhasin
- Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts,Address correspondence to: Shalender Bhasin, MB, BS, Boston Claude D. Pepper Older Americans Independence Center, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115. E-mail:
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Brown JD, Smith SM, Strotmeyer ES, Kritchevsky SB, Gill TM, Blair SN, Fielding RA, Buford TW, Pahor M, Manini TM. Comparative Effects of Angiotensin-Converting Enzyme Inhibitors and Angiotensin Receptor Blockers on Response to a Physical Activity Intervention in Older Adults: Results From the Lifestyle Interventions and Independence for Elders Study. J Gerontol A Biol Sci Med Sci 2020; 75:1010-1016. [PMID: 31070702 PMCID: PMC7164526 DOI: 10.1093/gerona/glz120] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Angiotensin-converting enzyme inhibitors (ACEis) and angiotensin receptor blockers (ARBs) may protect against aging-related decline. This study directly compared ACEis and ARBs on associations with risk of mobility disability in older adults when combined with a physical activity intervention. METHODS This was a secondary analysis of the Lifestyle Interventions and Independence for Elders (LIFE) trial. Participants aged 70-89 years were randomized to a physical activity or health education intervention. Outcomes included incident and persistent major mobility disability, injurious falls, short physical performance battery, and gait speed. For this analysis, only participants who reported ACEi or ARB use at baseline were included. Baseline differences between ACEi and ARB groups were adjusted for using inverse probability of treatment weights. Weighted Cox proportional hazard models and analysis of covariance models were used to evaluate the independent effects of medications and interaction effects with the intervention on each outcome. RESULTS Of 1,635 participants in the Lifestyle Interventions and Independence for Elders study, 796 used either an ACEi (496, 62.3%) or ARB (300, 37.7%). Compared with ACEi users, ARB users had 28% lower risk (hazard ratio [HR] = 0.72 [0.60-0.85]) of incident major mobility disability and 35% (HR = 0.65 [0.52-0.82]) lower risk of persistent major mobility disability whereas no interaction between medication use and intervention was observed. Risk of injurious falls and changes in short physical performance battery or gait speed were not different between ARB and ACEi users. CONCLUSIONS These results suggest that ARBs may protect from major mobility disability by other mechanisms than improving physical performance.
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Affiliation(s)
- Joshua D Brown
- Department of Pharmaceutical Outcomes and Policy, University of Florida College of Pharmacy, Gainesville
- Center for Drug Evaluation and Safety, University of Florida, Gainesville
| | - Steven M Smith
- Department of Pharmacotherapy and Translational Research, University of Florida College of Pharmacy, Gainesville
| | - Elsa S Strotmeyer
- Center for Aging and Population Health, Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Stephen B Kritchevsky
- Sticht Center for Healthy Aging and Alzheimer’s Prevention, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Thomas M Gill
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Steven N Blair
- Arnold School of Public Health, University of South Carolina, Columbia
| | - Roger A Fielding
- Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | | | - Marco Pahor
- Institute on Aging, Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville
| | - Todd M Manini
- Institute on Aging, Department of Aging and Geriatric Research, University of Florida College of Medicine, Gainesville
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Balachandran A, Gundermann DM, Walkup MP, King AC, Ambrosius WT, Kritchevsky SB, Pahor M, Newman AB, Manini TM. Association of Fish Oil and Physical Activity on Mobility Disability in Older Adults. Med Sci Sports Exerc 2020; 52:859-867. [PMID: 31688650 PMCID: PMC7123515 DOI: 10.1249/mss.0000000000002195] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
PURPOSE This study aimed to examine whether long-term fish oil (FO) supplementation is associated with a lower risk of mobility disability and enhances benefits of physical activity (PA). METHODS A total of 1635 sedentary adults age 70 to 89 yr from the Lifestyle Interventions and Independence for Elders single-blinded randomized, multicenter clinical trial, which compared a structured PA program to a health education program. Primary outcome was incident major mobility disability (MMD), defined by loss of ability to walk 400 m, measured every 6 months for an average of 2.6 yr. Secondary outcomes included persistent mobility disability, Short Physical Performance Battery, 400-m walk speed, and grip strength. RESULTS A third of participants reported using FO at baseline (456 (28%); mean age, 78.5 yr; 70.5% women). MMD was experienced by 131 participants (28.7%) in the FO group and 405 (34.4%) participants in the nonuser group. After adjusting for confounders, FO supplementation was associated with a lower risk (HR, 0.78; 95% confidence interval (CI), 0.64-0.96) of incident MMD. However, there was no interaction (P = 0.19) between FO supplementation and PA intervention for MMD. For the secondary outcome of persistent mobility disability, the intervention association differed by supplementation (P = 0.002) with PA intervention associations of (HR, 1.36; 95% CI, 0.83-2.23) for users and (HR, 0.61; 95% CI, 0.46-0.81) for nonusers. Changes in physical performance outcomes were not modified by baseline FO supplementation or combination with PA. CONCLUSIONS FO supplementation was associated with a lower risk of MMD in low to moderate functioning older adults. However, supplementation did not enhance the benefit of PA on risk of mobility disability. These results are hypothesis generating and need to be confirmed in randomized trials.
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Affiliation(s)
| | | | - Michael P Walkup
- Department of Biostatistical Sciences, School of Medicine, Wake Forest University, Winston-Salem, NC
| | - Abby C King
- School of Medicine, Stanford University, Stanford, CA
| | - Walter T Ambrosius
- Department of Biostatistical Sciences, School of Medicine, Wake Forest University, Winston-Salem, NC
| | - Stephen B Kritchevsky
- Section on Gerontology and Geriatric Medicine, Department of Internal Medicine, Sticht Center for Healthy Aging and Alzheimer's Prevention, School of Medicine, Wake Forest University, Winston-Salem, NC
| | - Marco Pahor
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL
| | - Anne B Newman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Todd M Manini
- Department of Aging and Geriatric Research, College of Medicine, University of Florida, Gainesville, FL
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Clark DJ, Manini TM, Ferris DP, Hass CJ, Brumback BA, Cruz-Almeida Y, Pahor M, Reuter-Lorenz PA, Seidler RD. Corrigendum: Multimodal Imaging of Brain Activity to Investigate Walking and Mobility Decline in Older Adults (Mind in Motion Study): Hypothesis, Theory, and Methods. Front Aging Neurosci 2020; 12:63. [PMID: 32194394 PMCID: PMC7064883 DOI: 10.3389/fnagi.2020.00063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 02/21/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- David J Clark
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States.,Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, United States
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | - Daniel P Ferris
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Chris J Hass
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States
| | - Babette A Brumback
- Department of Biostatistics, University of Florida, Gainesville, FL, United States
| | - Yenisel Cruz-Almeida
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, United States
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | | | - Rachael D Seidler
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States
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46
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Pahor M, Guralnik JM, Anton SD, Ambrosius WT, Blair SN, Church TS, Espeland MA, Fielding RA, Gill TM, Glynn NW, Groessl EJ, King AC, Kritchevsky SB, Manini TM, McDermott MM, Miller ME, Newman AB, Williamson JD. Impact and Lessons From the Lifestyle Interventions and Independence for Elders (LIFE) Clinical Trials of Physical Activity to Prevent Mobility Disability. J Am Geriatr Soc 2020; 68:872-881. [PMID: 32105353 PMCID: PMC7187344 DOI: 10.1111/jgs.16365] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 01/18/2023]
Abstract
BACKGROUND Walking independently is basic to human functioning. The Lifestyle Interventions and Independence for Elders (LIFE) studies were developed to assess whether initiating physical activity could prevent major mobility disability (MMD) in sedentary older adults. METHODS We review the development and selected findings of the LIFE studies from 2000 through 2019, including the planning phase, the LIFE-Pilot Study, and the LIFE Study. RESULTS The planning phase and the LIFE-Pilot provided key information for the successful implementation of the LIFE Study. The LIFE Study, involving 1635 participants randomized at eight sites throughout the United States, showed that compared with health education, the physical activity program reduced the risk of the primary outcome of MMD (inability to walk 400 m: hazard ratio = 0.82; 95% confidence interval = 0.69-0.98; P = .03), and that the intervention was cost-effective. There were no significant effects on cognitive outcomes, cardiovascular events, or serious fall injuries. In addition, the LIFE studies provided relevant findings on a broad range of other outcomes, including health, frailty, behavioral outcomes, biomarkers, and imaging. To date, the LIFE studies have generated a legacy of 109 peer-reviewed publications, 19 ancillary studies, and 38 independently funded grants and clinical trials, and advanced the development of 59 early career scientists. Data and biological samples of the LIFE Study are now publicly available from a repository sponsored by the National Institute on Aging (https://agingresearchbiobank.nia.nih.gov). CONCLUSIONS The LIFE studies generated a wealth of important scientific findings and accelerated research in geriatrics and gerontology, benefiting the research community, trainees, clinicians, policy makers, and the general public. J Am Geriatr Soc 68:872-881, 2020.
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Affiliation(s)
- Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida
| | - Jack M Guralnik
- Division of Gerontology, Department of Epidemiology and Public Health, University of Maryland School of Medicine, Baltimore, Maryland
| | - Stephen D Anton
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida
| | - Walter T Ambrosius
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Steven N Blair
- Department of Exercise Science, Arnold School of Public Health University of South Carolina, Columbia, South Carolina
| | | | - Mark A Espeland
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Roger A Fielding
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts
| | - Thomas M Gill
- Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Nancy W Glynn
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Erik J Groessl
- VA San Diego Healthcare System and Department of Family and Preventive Medicine, University of California, San Diego, San Diego, California
| | - Abby C King
- Department of Health Research and Policy (Epidemiology) and of Medicine (Stanford Prevention Research Center), Stanford University, School of Medicine, Stanford, California
| | - Stephen B Kritchevsky
- Department of Internal Medicine and the Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, Florida
| | - Mary M McDermott
- Division of General Internal Medicine and Geriatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Michael E Miller
- Division of Public Health Sciences, Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Anne B Newman
- Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Jeff D Williamson
- Department of Internal Medicine and the Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Winston-Salem, North Carolina
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Ampomah K, Amano S, Wages NP, Volz L, Clift R, Ludin AFM, Nakazawa M, Law TD, Manini TM, Thomas JS, Russ DW, Clark BC. Blood Flow-restricted Exercise Does Not Induce a Cross-Transfer of Effect: A Randomized Controlled Trial. Med Sci Sports Exerc 2020; 51:1817-1827. [PMID: 30913160 PMCID: PMC6697223 DOI: 10.1249/mss.0000000000001984] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Supplemental digital content is available in the text. Purpose The goal of this trial was to determine whether low-load blood flow–restricted (BFR) exercise of appendicular muscles induces a cross-transfer of effect to the trunk extensor (TE) muscles, such that low-load TE exercise would enhance TE size and function to a greater extent than standard low-load exercise in people with recurrent low back pain (LBP). We also investigated the direct effects of BFR exercise in the appendicular muscles. Methods Thirty-two adults with recurrent, nonspecific LBP were randomized into two groups: Appendicular BFR exercise (BFR exercise) or control exercise (CON exercise). All participants trained (two times per week) for 10 wk, with a 12-wk follow-up. Participants performed three sets of leg extension (LE), plantar flexion (PF), and elbow flexion (EF) exercises followed by low-load TE exercise without BFR. Outcome measures included magnetic resonance imaging–derived muscle size (quadriceps and TE), strength (LE, PF, EF, and TE), and endurance (LE and TE). Results There was no evidence for a cross-transfer of effect to the TE. There was also no statistically significant enhancement of limb skeletal muscle size or function of BFR relative to CON exercise at any time point; though, moderate effect sizes for BFR exercise were observed for enhanced muscle size and strength in the leg extensors. Conclusions Low-load BFR exercise of the appendicular muscles did not result in a cross-transfer of effect to the TE musculature. There was also no significant benefit of low-load BFR exercise on the appendicular muscle size and function, suggesting no benefit from low-load BFR exercise in adults with recurrent, nonspecific LBP.
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Affiliation(s)
- Kwasi Ampomah
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH
| | - Shinichi Amano
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Clinical and Translational Research Unit (CTRU), Ohio University, Athens, OH
| | - Nathan P Wages
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH
| | - Lauren Volz
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH
| | - Rachel Clift
- Clinical and Translational Research Unit (CTRU), Ohio University, Athens, OH
| | - Arimi Fitri Mat Ludin
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, MALAYSIA
| | - Masato Nakazawa
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Office of Research and Grants, Ohio University Heritage College of Osteopathic Medicine, Athens, OH
| | - Timothy D Law
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Clinical and Translational Research Unit (CTRU), Ohio University, Athens, OH.,Department of Family Medicine, Ohio University, Athens, OH
| | - Todd M Manini
- Institute on Aging and the Department of Geriatric Medicine, University of Florida, Gainesville, FL
| | - James S Thomas
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Division of Physical Therapy, the School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH.,Department of Biomedical Sciences, Ohio University, Athens, OH
| | - David W Russ
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Division of Physical Therapy, the School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH
| | - Brian C Clark
- Ohio Musculoskeletal and Neurological Institute (OMNI), Ohio University, Athens, OH.,Department of Biomedical Sciences, Ohio University, Athens, OH
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Clark DJ, Manini TM, Ferris DP, Hass CJ, Brumback BA, Cruz-Almeida Y, Pahor M, Reuter-Lorenz PA, Seidler RD. Multimodal Imaging of Brain Activity to Investigate Walking and Mobility Decline in Older Adults (Mind in Motion Study): Hypothesis, Theory, and Methods. Front Aging Neurosci 2020; 11:358. [PMID: 31969814 PMCID: PMC6960208 DOI: 10.3389/fnagi.2019.00358] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 12/09/2019] [Indexed: 12/25/2022] Open
Abstract
Age-related brain changes likely contribute to mobility impairments, but the specific mechanisms are poorly understood. Current brain measurement approaches (e.g., functional magnetic resonance imaging (fMRI), functional near infrared spectroscopy (fNIRS), PET) are limited by inability to measure activity from the whole brain during walking. The Mind in Motion Study will use cutting edge, mobile, high-density electroencephalography (EEG). This approach relies upon innovative hardware and software to deliver three-dimensional localization of active cortical and subcortical regions with good spatial and temporal resolution during walking. Our overarching objective is to determine age-related changes in the central neural control of walking and correlate these findings with a comprehensive set of mobility outcomes (clinic-based, complex walking, and community mobility measures). Our hypothesis is that age-related walking deficits are explained in part by the Compensation Related Utilization of Neural Circuits Hypothesis (CRUNCH). CRUNCH is a well-supported model that describes the over-recruitment of brain regions exhibited by older adults in comparison to young adults, even at low levels of task complexity. CRUNCH also describes the limited brain reserve resources available with aging. These factors cause older adults to quickly reach a ceiling in brain resources when performing tasks of increasing complexity, leading to poor performance. Two hundred older adults and twenty young adults will undergo extensive baseline neuroimaging and walking assessments. Older adults will subsequently be followed for up to 3 years. Aim 1 will evaluate whether brain activity during actual walking explains mobility decline. Cross sectional and longitudinal designs will be used to study whether poorer walking performance and steeper trajectories of decline are associated with CRUNCH indices. Aim 2 is to harmonize high-density EEG during walking with fNIRS (during actual and imagined walking) and fMRI (during imagined walking). This will allow integration of CRUNCH-related hallmarks of brain activity across neuroimaging modalities, which is expected to lead to more widespread application of study findings. Aim 3 will study central and peripheral mechanisms (e.g., cerebral blood flow, brain regional volumes, and connectivity, sensory function) to explain differences in CRUNCH indices during walking. Research performed in the Mind in Motion Study will comprehensively characterize the aging brain during walking for developing new intervention targets.
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Affiliation(s)
- David J Clark
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States.,Brain Rehabilitation Research Center, Malcom Randall VA Medical Center, Gainesville, FL, United States
| | - Todd M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | - Daniel P Ferris
- Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States
| | - Chris J Hass
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States
| | - Babette A Brumback
- Department of Biostatistics, University of Florida, Gainesville, FL, United States
| | - Yenisel Cruz-Almeida
- Pain Research and Intervention Center of Excellence, University of Florida, Gainesville, FL, United States
| | - Marco Pahor
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, United States
| | | | - Rachael D Seidler
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL, United States
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Riwniak C, Simon JE, Wages NP, Clark LA, Manini TM, Russ DW, Clark BC. Comparison of a Multi-Component Physical Function Battery to Usual Walking Speed for Assessing Lower Extremity Function and Mobility Limitation in Older Adults. J Nutr Health Aging 2020; 24:906-913. [PMID: 33009544 PMCID: PMC9731178 DOI: 10.1007/s12603-020-1432-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVES To compare a composite measure of physical function that comprises locomotor and non-locomotor tests (i.e., the Mobility Battery Assessment (MBA)) with traditional measures of mobility (4-m usual gait speed (UGS), six-minute walk (6MW) gait speed, and short physical performance battery (SPPB) score) for assessing lower extremity function and discriminating community dwelling older adults with and without mobility limitations. DESIGN Cross-sectional, observational study. SETTING Laboratory-based. PARTICIPANTS 89 community-dwelling older adults (74.9±6.7). MEASUREMENTS Using principal component analysis we derived an MBA score for 89 community-dwelling older adults, and quantified 4-m UGS, 6MW gait speed, and SPPB score. The MBA score was based on five lab-based tests. We also quantified self-reported lower extremity function/mobility using the Neuro-QOL Lower Extremity Function-Mobility instrument. Based on this data a continuous score was derived and subjects were classified as "mobility limited" or "non-mobility limited". Correlations between the mobility measures and the Neuro-QOL score were calculated, and ROC curves were constructed to determine the AUC for the mobility measures ability to predict mobility limitations. RESULTS The MBA had the largest AUC (0.92) for discriminating mobility limitations and exhibited the strongest correlation (0.73) with the Neuro-QOL Lower Extremity Function-Mobility Scale. The worst performing predictors were the 4-meter UGS and stair climb power both with an AUC of 0.8 for discriminating mobility limitations, and a low correlation with Neuro-QOL Lower Extremity Function Scale of 0.39 and 0.46, respectively. CONCLUSION The MBA score moderately improves the magnitude of correlation and discrimination of mobility limitation in older adults than singular, standard tests of mobility.
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Affiliation(s)
- C Riwniak
- Brian C. Clark, Ph.D., Ohio Musculoskeletal and Neurological Institute, Ohio University, 250 Irvine Hall, Athens, OH 45701, 740-593-2354, ,
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50
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Mankowski RT, You L, Buford TW, Leeuwenburgh C, Manini TM, Schneider S, Qiu P, Anton SD. Higher dose of resveratrol elevated cardiovascular disease risk biomarker levels in overweight older adults - A pilot study. Exp Gerontol 2019; 131:110821. [PMID: 31891746 DOI: 10.1016/j.exger.2019.110821] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 12/06/2019] [Accepted: 12/26/2019] [Indexed: 02/05/2023]
Abstract
Older adults are at high risk of developing cardiovascular disease (CVD). Pre-clinical studies indicate that resveratrol (RSV), a polyphenol commonly found in grapes and red wine, may help prevent development of CVD. Based on our previous reports where the 300 mg and 1000 mg doses appeared safe and improved psychomotor function in a dose-dependent manner, our hypothesis was that RSV would reduce biomarkers of CVD risk in overweight, but otherwise healthy older adults and that 1000 mg would lower CVD biomarkers >300 mg. This analysis was performed on samples from older participants (65 years and older) who were randomized to a 90 day RSV treatment with 300 mg (n = 10), 1000 mg (n = 9) or placebo (n = 10). We measured levels of CVD risk biomarkers i.e. oxidized low-density lipoprotein (oxLDL), soluble E-selectin-1 (sE-selectin), soluble Intercellular Adhesion Molecule-1 (sICAM-1), Soluble Vascular Cell Adhesion Molecule-1 (sVCAM-1), total plasminogen activator inhibitor (tPAI-1). Statistical significance was set at p < 0.05. Both sVCAM-1 and tPAI increased significantly more in the 1000 mg vs. 300 mg and placebo groups. Other biomarkers (300 mg vs. 1000 mg vs. placebo: oxLDL, sEselectin-1 and sICAM-1) followed the same trend toward higher levels in the 1000 mg group compared to the 300 mg and placebo groups, without reaching statistical significance. This pilot project suggests that a higher dose of RSV may increase the levels of CVD risk biomarkers in overweight older adults. Given no change in the CVD risk biomarkers in response to a lower dose, future studies should test the effects of different doses of RSV to evaluate potential detrimental effects of higher doses on CVD biomarkers and measures of cardiovascular function in older adults at risk for CVD.
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Affiliation(s)
- R T Mankowski
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA.
| | - L You
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - T W Buford
- Department of Medicine, UAB School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - C Leeuwenburgh
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - T M Manini
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - S Schneider
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
| | - P Qiu
- Department of Biostatistics, University of Florida, Gainesville, FL, USA
| | - S D Anton
- Department of Aging and Geriatric Research, University of Florida, Gainesville, FL, USA
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