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Jia S, Si Y, Guo C, Wang P, Li S, Wang J, Wang X. The prediction model of fall risk for the elderly based on gait analysis. BMC Public Health 2024; 24:2206. [PMID: 39138430 PMCID: PMC11323353 DOI: 10.1186/s12889-024-19760-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 08/12/2024] [Indexed: 08/15/2024] Open
Abstract
INTRODUCTION Early screening and identification are crucial for fall prevention, and developing a new method to predict fall risk in the elderly can address the current lack of objectivity in assessment tools. METHODS A total of 132 elderly individuals over 80 years old residing in some nursing homes in Shanghai were selected using a convenient sampling method. Fall history information was collected, and gait data during a 10-meter walk were recorded. Logistic regression was employed to establish the prediction model, and a nomogram was used to assess the importance of the indicators. The Bootstrap method was utilized for internal validation of the model, while the verification set was used for external validation. The predictive performance of the model was evaluated using the area under the ROC curve, calibration curve, and decision curve analysis (DCA) to assess clinical benefits. RESULTS The incidence of falls in the sample population was 36.4%. The Tinetti Gait and Balance Test (TGBT) score (OR = 0.832, 95% CI: 0.734,0.944), stride length (OR = 0.007, 95% CI: 0.000,0.104), difference in standing time (OR = 0.001, 95% CI: 0.000,0.742), and mean stride time (OR = 0.992, 95% CI:0.984,1.000) were identified as significant factors. The area under the ROC curve was 0.878 (95% CI: 0.805, 0.952), with a sensitivity of 0.935 and specificity of 0.726. The Brier score was 0.135, and the Hosmer-Lemeshow test (χ2 = 10.650, P = 0.222) indicated a good fit and calibration of the model. CONCLUSION The TGBT score, stride length, difference in standing time, and stride time are all protective factors associated with fall risk among the elderly. The developed risk prediction model demonstrates good discrimination and calibration, providing valuable insights for early screening and intervention in fall risk among older adults.
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Affiliation(s)
- Shuqi Jia
- School of Physical Education, Shanghai University of Sport, Shanghai, China
| | - Yanran Si
- Physical Education and Sport Department, Shanghai International Studies University, Shanghai, China
| | - Chengcheng Guo
- School of Public Administration, Hohai University, Nanjing, China
| | - Peng Wang
- School of Physical Education, Shanghai University of Sport, Shanghai, China
| | - Shufan Li
- School of Physical Education, Shanghai University of Sport, Shanghai, China
| | - Jing Wang
- School of Physical Education and Health, Shanghai Lixin University of Accounting and Finance, Shanghai, China
| | - Xing Wang
- School of Physical Education, Shanghai University of Sport, Shanghai, China.
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Martínez-Carrasco C, Cid-Navarrete F, Rossel PO, Fuentes J, Zamunér AR, Méndez-Rebolledo G, Cabrera-Aguilera I. Relationship Between Executive Function Subdomains and Postural Balance in Community-Dwelling Older Adults. J Aging Phys Act 2024:1-9. [PMID: 39089679 DOI: 10.1123/japa.2023-0323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 04/04/2024] [Accepted: 05/13/2024] [Indexed: 08/04/2024]
Abstract
BACKGROUND Executive function (EF) deficits are a significant risk factor for falls among older adults (OAs). However, relationship between EF subdomains (shifting, updating, and inhibition), postural balance (PB), and fall risk in healthy OAs, remains poorly understood. OBJECTIVE This study aimed to investigate the relationship between EF subdomains (shifting, updating, and inhibition) and PB, and to assess their impact on risk of falls in community-dwelling OAs. METHODS A cross-sectional study involving 50 OAs aged over 60 years (average age of 72 years) was conducted. Participants underwent assessments of EF subdomains and PB using validated tests. A correlation analysis was employed to examine the relationships between EF and PB. RESULTS The study revealed significant correlations between subdomains and PB. Mental set shifting (r = -.539; p < .001) and inhibition (r = -.395; p = .050) exhibited inverse relationships with PB. Stepwise multiple linear regression showed that Trail Making Test Part B was associated with the PB (R2 = .42, p < .001). CONCLUSION These findings highlight the importance of assessing EF subdomains, particularly shifting and inhibition, to identify risk of falls. Trail Making Test Part B largely explains the variability of the PB. Integrating PB assessments and EF training, such as the Mini-BESTest, into routine care can be vital for fall prevention strategies. Significance/Implications: This knowledge underscores the need for cognitive training interventions focusing on shifting and inhibition to enhance PB and potentially reduce falls. Additionally, incorporation of EF assessment tools as Trail Making Test Part B and the Mini-BESTest into routine clinical practice for community-dwelling OAs is recommended to address fall prevention strategies.
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Affiliation(s)
- Claudia Martínez-Carrasco
- Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Concepción, Chile
| | | | - Pedro O Rossel
- Departamento de Ingeniería Informática, Universidad Católica de la Santísima Concepción, Concepción, Chile
- Centro de Investigación en Biodiversidad y Ambientes Sustentables (CIBAS), Universidad Católica de la Santísima Concepción, Concepción, Chile
| | - Jorge Fuentes
- Clinical Research Lab, Department of Physical Therapy, Universidad Católica del Maule, Talca, Chile
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, AL, Canada
| | - Antonio Roberto Zamunér
- Clinical Research Lab, Department of Physical Therapy, Universidad Católica del Maule, Talca, Chile
| | - Guillermo Méndez-Rebolledo
- Laboratorio de Investigación Somatosensorial y Motora, Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Talca, Chile
| | - Ignacio Cabrera-Aguilera
- Escuela de Kinesiología, Facultad de Odontología y Ciencias de la Rehabilitación, Universidad San Sebastián, Concepción, Chile
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Feng RC, Dong YH, Hong XL, Su Y, Wu XV. Effects of anthocyanin-rich supplementation on cognition of the cognitively healthy middle-aged and older adults: a systematic review and meta-analysis of randomized controlled trials. Nutr Rev 2023; 81:287-303. [PMID: 35960187 DOI: 10.1093/nutrit/nuac055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT The prevalence of age-related cognitive decline has been on the rise as the global population age, putting the independence and quality of life of elderly at risk. Anthocyanin, as a subclass of dietary flavonoids, may have a beneficial impact on cognitive outcomes. OBJECTIVES To examine the effects of dietary anthocyanin supplementation on cognition of the cognitively healthy middle-aged and older adults. DATA SOURCES PubMed, ScienceDirect, CINAHL, EMBASE, ProQuest and Cochrane databases were searched. DATA EXTRACTION AND ANALYSIS Thirteen studies were included in this meta-analysis. Anthocyanin-rich supplementation was found to significantly improve the processing speed of the older adults (95%CI 0.08, 0.44; P = 0.004). No significant differences were observed between intervention and control groups on memory, attention, executive function and psychomotor performance. Current neuroimaging studies have found promising effects of anthocyanin supplementation on brain activation and cerebral perfusion. CONCLUSION Anthocyanin-rich supplementation may preserve cognitive processing speed and neuro-activities in older adults, which improves their daily functioning and quality of life. This review provides useful insights to guide direction and methodological designs for future studies to explore the underlying mechanisms of anthocyanins. SYSTEMATIC REVIEW AND META-ANALYSIS REGISTRATION PROSPERO registration No. CRD42021228007.
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Affiliation(s)
- Ruo Chen Feng
- is with the High-Dependency Unit, Tan Tock Seng Hospital, National Health Group, Singapore
| | - Yan Hong Dong
- are with the Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,is with the Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Xian Li Hong
- is with the Medical Intensive Care Unit, Tan Tock Seng Hospital, National Health Group, Singapore
| | - Ya Su
- is with the Shanghai Jiao Tong University, School of Nursing, Shanghai, China.,is with the Faculty of Health Sciences, Hokkaido University, Japan
| | - Xi Vivien Wu
- are with the Alice Lee Centre for Nursing Studies, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,is with the NUSMED Healthy Longevity Translational Research Programme, National University of Singapore, Singapore
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Leroy V, Martinet V, Nunkessore O, Dentel C, Durand H, Mockler D, Puisieux F, Fougère B, Chen Y. The Nebulous Association between Cognitive Impairment and Falls in Older Adults: A Systematic Review of the Literature. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:2628. [PMID: 36767992 PMCID: PMC9915123 DOI: 10.3390/ijerph20032628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/22/2023] [Accepted: 01/30/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND In older people, dementia is a well-established risk factor for falls. However, the association and the causal relationship between falls and the earlier stages of cognitive impairment remains unclear. The purpose of the study was to review the literature data on the association between falls and cognitive impairment, no dementia, including Mild Cognitive Impairment. METHODS According to PRISMA guidelines, we searched five electronic databases (EMBASE, Web of Science, Medline, CINAHL, and PsychINFO) for articles published between January 2011 and August 2022 on observational studies of older people with a cognitive assessment and/or cognitive impairment diagnosis and a recording of falls. Their quality was reviewed according to the STROBE checklist. RESULTS We selected 42 of the 4934 initially retrieved publications. In 24 retrospective studies, a statistically significant association between falls and cognitive status was found in only 15 of the 32 comparisons (47%). Of the 27 cross-sectional analyses in prospective studies, only eight (30%) were positive and significant. We counted four longitudinal analyses, half of which suggested a causal relationship between falls and cognitive impairment. The investigational methods varied markedly from one study to another. CONCLUSION It is still not clear whether falls are associated with cognitive impairment, no dementia. Data in favor of a causal relationship are scarce. Further studies are needed to clarify their relationship.
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Affiliation(s)
- Victoire Leroy
- Division of Geriatric Medicine, Tours University Hospital, 37000 Tours, France
- EA 7505 (Education, Ethics, Health), University of Medicine of Tours, 37000 Tours, France
- Memory Clinic, Tours University Hospital, 37000 Tours, France
| | - Valérie Martinet
- Department of Geriatrics, Saint-Pierre Hospital, ULB, 1000 Brussels, Belgium
| | | | | | - Hélène Durand
- Department of Neurology, Hautepierre Hospital, Strasbourg University Hospital, 67200 Strasbourg, France
| | - David Mockler
- Medical Library, Trinity Centre for the Health Sciences, St James’ Hospital, D08 W9RT Dublin, Ireland
| | - François Puisieux
- Department of Gerontology, Lille University Hospital, 59000 Lille, France
- EA2694, Lille University, 59000 Lille, France
| | - Bertrand Fougère
- Division of Geriatric Medicine, Tours University Hospital, 37000 Tours, France
- EA 7505 (Education, Ethics, Health), University of Medicine of Tours, 37000 Tours, France
| | - Yaohua Chen
- Department of Gerontology, Lille University Hospital, 59000 Lille, France
- INSERM UMR-S 1172, Vascular and Degenerative Cognitive Disorders, University of Lille, 59000 Lille, France
- Global Brain Health Institute, Trinity College Dublin, D02 PN40 Dublin, Ireland
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Eckert MA, Iuricich F, Harris KC, Hamlett ED, Vazey EM, Aston-Jones G. Locus coeruleus and dorsal cingulate morphology contributions to slowed processing speed. Neuropsychologia 2023; 179:108449. [PMID: 36528219 PMCID: PMC9906468 DOI: 10.1016/j.neuropsychologia.2022.108449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/15/2022]
Abstract
Slowed information processing speed is a defining feature of cognitive aging. Nucleus locus coeruleus (LC) and medial prefrontal regions are targets for understanding slowed processing speed because these brain regions influence neural and behavioral response latencies through their roles in optimizing task performance. Although structural measures of medial prefrontal cortex have been consistently related to processing speed, it is unclear if 1) declines in LC structure underlie this association because of reciprocal connections between LC and medial prefrontal cortex, or 2) if LC declines provide a separate explanation for age-related changes in processing speed. LC and medial prefrontal structural measures were predicted to explain age-dependent individual differences in processing speed in a cross-sectional sample of 43 adults (19-79 years; 63% female). Higher turbo-spin echo LC contrast, based on a persistent homology measure, and greater dorsal cingulate cortical thickness were significantly and each uniquely related to faster processing speed. However, only dorsal cingulate cortical thickness appeared to statistically mediate age-related differences in processing speed. The results suggest that individual differences in cognitive processing speed can be attributed, in part, to structural variation in nucleus LC and medial prefrontal cortex, with the latter key to understanding why older adults exhibit slowed processing speed.
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Affiliation(s)
- Mark A Eckert
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, MSC 550, Charleston, S.C., 29425-5500, USA.
| | - Federico Iuricich
- Visual Computing Division, School of Computing, Clemson University, Clemson, S.C., 29634, USA
| | - Kelly C Harris
- Hearing Research Program, Department of Otolaryngology-Head and Neck Surgery, Medical University of South Carolina, MSC 550, Charleston, S.C., 29425-5500, USA
| | - Eric D Hamlett
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, S.C., 29425-5500, USA
| | - Elena M Vazey
- Department of Biology, University of Massachusetts Amherst, Amherst, MA, 01003-9297, USA
| | - Gary Aston-Jones
- Brain Health Institute, Rutgers University/Rutgers Biomedical and Health Sciences, Piscataway, NJ, 08854, USA
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Jehu DA, Davis JC, Gill J, Oke O, Liu-Ambrose T. The Effect of Exercise on Falls in People Living with Dementia: A Systematic Review. J Alzheimers Dis 2023; 92:1199-1217. [PMID: 36872779 DOI: 10.3233/jad-221038] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
BACKGROUND People living with dementia (PWD) are at a heightened risk for falls. However, the effects of exercise on falls in PWD are unclear. OBJECTIVE To conduct a systematic review of randomized controlled trials (RCTs) examining the efficacy of exercise to reduce falls, recurrent falls, and injurious falls relative to usual care among PWD. METHODS We included peer-reviewed RCTs evaluating any exercise mode on falls and related injuries among medically diagnosed PWD aged ≥55years (international prospective register of systematic reviews (PROSPERO) ID:CRD42021254637). We excluded studies that did not solely involve PWD and were not the primary publication examining falls. We searched the Cochrane Dementia and Cognitive Improvement Group's Specialized Register and grey literature on 08/19/2020 and 04/11/2022; topical categories included dementia, exercise, RCTs, and falls. We evaluated the risk of bias (ROB) using the Cochrane ROB Tool-2 and study quality using the Consolidated Standards of Reporting Trials. RESULTS Twelve studies were included (n = 1,827; age = 81.3±7.0 years; female = 59.3%; Mini-Mental State Examination = 20.1±4.3 points; intervention duration = 27.8±18.5 weeks; adherence = 75.5±16.2%; attrition = 21.0±12.4%). Exercise reduced falls in two studies [Incidence Rate Ratio (IRR) range = 0.16 to 0.66; fall rate range: intervention = 1.35-3.76 falls/year, control = 3.07-12.21 falls/year]; all other studies (n = 10) reported null findings. Exercise did not reduce recurrent falls (n = 0/2) or injurious falls (n = 0/5). The RoB assessment ranged from some concerns (n = 9) to high RoB (n = 3); no studies were powered for falls. The quality of reporting was good (78.8±11.4%). CONCLUSION There was insufficient evidence to suggest that exercise reduces falls, recurrent falls, or injurious falls among PWD. Well-designed studies powered for falls are needed.
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Affiliation(s)
- Deborah A Jehu
- Interdisciplinary Health Sciences Department, College of Allied Health Sciences, Augusta University, Augusta, GA, USA
- Centre for Aging SMART at Vancouver Coastal Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Aging, Mobility and Cognitive Neuroscience Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Jennifer C Davis
- Applied Health Economics Laboratory, The University of British Columbia -Okanagan, Kelowna, BC, Canada
- Centre for Aging SMART at Vancouver Coastal Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Faculty of Management, University of British Columbia-Okanagan Campus, Kelowna, BC, Canada
| | - Jessica Gill
- Aging, Mobility and Cognitive Neuroscience Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Olabamibo Oke
- Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Teresa Liu-Ambrose
- Centre for Aging SMART at Vancouver Coastal Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, BC, Canada
- Aging, Mobility and Cognitive Neuroscience Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
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No Association Between Processing Speed and Risk of Sport-Related Concussion in Youth Soccer. Clin J Sport Med 2022; 32:e587-e590. [PMID: 36315826 DOI: 10.1097/jsm.0000000000001064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 07/07/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To determine whether slow processing speed is associated with risk of sport-related concussion. DESIGN We conducted a retrospective cohort study using computerized neurocognitive assessments (Immediate Post-concussion Assessment and Cognitive Testing [ImPACT]) from the Massachusetts Concussion Management Coalition. Slow processing speed was defined as 2 SD below the sample mean (n = 131) and fast processing speed as 2 SD above the sample mean (n = 259). We used a binary logistic regression model to determine the odds of sustaining a concussion with our main predictor being processing speed (high or low) adjusted for the effects of age, sex, and prior number of concussions. SETTING Massachusetts Concussion Management Coalition, Institutional care. PARTICIPANTS Three hundred ninety junior high soccer players ages 10 to 15 with a baseline score for ImPACT. INDEPENDENT VARIABLES Processing Speed. MAIN OUTCOME MEASURES Risk of sustaining a concussion. RESULTS Those with slow processing speed had a visual motor composite score of ≤19.92, those with fast-processing speed had a score of ≥46.20. Athletes with slow processing speed were younger (13 vs 14 years; P < 0.001) and more likely to be male (57% vs 49%; P = 0.014). After adjusting for the effects of age, sex, and prior concussions, there was no significant difference in the odds of sustaining a concussion between groups (aOR 1.01; 95% CI, 0.99-1.04). CONCLUSIONS Despite previous research showing that slow processing speed is a risk factor for musculoskeletal injuries during sports, our study suggests that processing speed is not associated with the risk of sustaining a concussion among junior high school soccer players.
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Establishing the minimal clinically important difference of the EQ-5D-3L in older adults with a history of falls. Qual Life Res 2022; 31:3293-3303. [PMID: 35999431 DOI: 10.1007/s11136-022-03231-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2022] [Indexed: 10/15/2022]
Abstract
PURPOSE Establish the minimal clinically important difference (MCID) of a health-related quality of life (HRQoL) measure-the EuroQol EQ-5 Dimensions-3 Level (EQ-5D-3L)-in older adults with a history of falls. METHODS This study is a secondary analysis of 255 complete cases who were enrolled in a 12-month randomized controlled trial (NCT01029171; NCT00323596); participants were randomized to the Otago Exercise Program (OEP; n = 126/172; Age:81.2 ± 6.2 years; 60.3% Female) or control (CON; n = 129/172; Age:81.7 ± 5.7 years; 70.5% Female). Participants completed the EQ-5D-3L and Visual Analogue Scale (VAS) at baseline and 1-year. The VAS was associated with HRQoL and was the health status anchor (VAS minimal improvement = 7 to 17, maximal improvement ≥ 18, minimal decline = - 7 to - 17, maximal decline ≤ - 18 points). We used four distinct approaches to estimate MCID ranges: (1) anchor-based change differences of the EQ-5D-3L (1-year minus baseline); (2) anchor-based beta coefficients from ordinary least squares regressions (OLS); (3) anchor-based receiver operating characteristic (ROC), and 4) distribution-based standard deviation and standardized effect size of 0.5. RESULTS EQ-5D-3L MCID ranges for minimal improvements (OEP = 0.028 to 0.059; CON = 0.007 to 0.051), maximal improvements (OEP = 0.059 to 0.090; CON = 0.051 to 0.090), minimal declines (OEP = - 0.029 to - 0.105; CON = - 0.015 to - 0.051), and maximal declines (OEP = - 0.018 to - 0.072; CON = - 0.018 to - 0.082) were established using change difference, OLS, and distribution-based methods. The ROC area under the curve was poor, thus, it was not used to estimate the MCID. CONCLUSIONS Our results will assist in the interpretation of changes in HRQoL, as measured by the EQ-5D-3L, in older adults with a history of falls.
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Tobaigy M, Hafner BJ, Sawers A. Recalled Number of Falls in the Past Year-Combined With Perceived Mobility-Predicts the Incidence of Future Falls in Unilateral Lower Limb Prosthesis Users. Phys Ther 2022; 102:6448021. [PMID: 34971384 DOI: 10.1093/ptj/pzab267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 08/04/2021] [Accepted: 09/22/2021] [Indexed: 11/14/2022]
Abstract
OBJECTIVE Falls are a frequent and costly concern for lower limb prosthesis (LLP) users. At present, there are no models that clinicians can use to predict the incidence of future falls in LLP users. Assessing who is at risk for falls, therefore, remains a challenge. The purpose of this study was to test whether easily accessible clinical attributes and measurements predict the incidence of future falls in LLP users. METHODS In this prospective observational study, a secondary analysis of data from 60 LLP users was conducted. LLP users reported the number of falls that they recalled over the past year before prospectively reporting falls over a 6-month observation period via monthly telephone calls. Additional candidate predictor variables were recorded at baseline. Negative binomial regression was used to develop a model intended to predict the incidence of future falls. RESULTS The final model, which included the number of recalled falls (incidence rate ratio = 1.13; 95% CI = 1.01 to 1.28) and Prosthetic Limb Users Survey of Mobility T-scores (incidence rate ratio = 0.949; 95% CI = 0.90 to 1.01), was significantly better than a null model at predicting the number of falls over the next 6 months (χ22 = 9.76) and fit the observed prospective fall count data (χ256 = 54.78). CONCLUSION The number of recalled falls and Prosthetic Limb Users Survey of Mobility T-scores predicted the incidence of falls over the next 6 months in established, unilateral LLP users. The success and simplicity of the final model suggests that it may serve as a screening tool for clinicians to use for assessing risk of falls. Additional research to validate the proposed model in an independent sample of LLP users is needed. IMPACT Owing to its simplicity, the final model may serve as a suitable screening measure for clinicians to ascertain an initial evaluation of fall risk in established unilateral LLP users. Analyzing falls data as counts rather than as a categorical variable may be an important methodological consideration for falls prevention research.
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Affiliation(s)
- Moaz Tobaigy
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois, USA.,Faculty of Medical Rehabilitation Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Brian J Hafner
- Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA
| | - Andrew Sawers
- Department of Kinesiology and Nutrition, University of Illinois at Chicago, Chicago, Illinois, USA
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Turunen KM, Tirkkonen A, Savikangas T, Hänninen T, Alen M, Fielding RA, Kivipelto M, Stigsdotter Neely A, Törmäkangas T, Sipilä S. Effects of Physical and Cognitive Training on Falls and Concern about Falling in Older Adults: Results from a Randomized Controlled Trial. J Gerontol A Biol Sci Med Sci 2021; 77:1430-1437. [PMID: 34910809 PMCID: PMC9255687 DOI: 10.1093/gerona/glab375] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Indexed: 12/01/2022] Open
Abstract
Background The aim of this study is to investigate whether combined cognitive and physical training provides additional benefits to fall prevention when compared with physical training (PT) alone in older adults. Methods This is a prespecified secondary analysis of a single-blind, randomized controlled trial involving community-dwelling men and women aged 70–85 years who did not meet the physical activity guidelines. The participants were randomized into combined physical and cognitive training (PTCT, n = 155) and PT (n = 159) groups. PT included supervised and home-based physical exercises following the physical activity recommendations. PTCT included PT and computer-based cognitive training. The outcome was the rate of falls over the 12-month intervention (PTCT, n = 151 and PT, n = 155) and 12-month postintervention follow-up (PTCT, n = 143 and PT, n = 148). Falls were ascertained from monthly diaries. Exploratory outcomes included the rate of injurious falls, faller/recurrent faller/fall-related fracture status, and concern about falling. Results Estimated incidence rates of falls per person-year were 0.8 (95% confidence interval [CI] 0.7–1.1) in the PTCT and 1.1 (95% CI 0.9–1.3) in the PT during the intervention and 0.8 (95% CI 0.7–1.0) versus 1.0 (95% CI 0.8–1.1), respectively, during the postintervention follow-up. There was no significant difference in the rate of falls during the intervention (incidence rate ratio [IRR] = 0.78; 95% CI 0.56–1.10, p = .152) or in the follow-up (IRR = 0.83; 95% CI 0.59–1.15, p = .263). No significant between-group differences were observed in any exploratory outcomes. Conclusion A yearlong PTCT intervention did not result in a significantly lower rate of falls or concern about falling than PT alone in older community-dwelling adults. Clinical Trial Registration ISRCTN52388040
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Affiliation(s)
- Katri M Turunen
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.,Seinäjoki University of Applied Sciences, School of Health Care and Social Work, Seinäjoki, Finland
| | - Anna Tirkkonen
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Tiina Savikangas
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Tuomo Hänninen
- NeuroCenter, Neurology, Kuopio University Hospital, Kuopio, Finland
| | - Markku Alen
- Department of Medical Rehabilitation, Oulu University Hospital, Oulu, Finland
| | - Roger A Fielding
- Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts, USA
| | - Miia Kivipelto
- Public Health Promotion Unit, Finnish Institute for Health and Welfare, Helsinki, Finland, Helsinki, Finland.,Division of Clinical Geriatrics, Center for Alzheimer Research, NVS, Karolinska Institutet, Stockholm, Sweden.,Institute of Clinical Medicine/Neurology, University of Eastern Finland, Kuopio, Finland.,Neuroepidemiology and Ageing Research Unit, School of Public Health, Imperial College London, London, United Kingdom
| | - Anna Stigsdotter Neely
- Department of Social and Psychological Studies, Karlstad University, Karlstad, Sweden.,Department of Psychology, Umeå University, Umeå, Sweden
| | - Timo Törmäkangas
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
| | - Sarianna Sipilä
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
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11
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Wang L, Song P, Cheng C, Han P, Fu L, Chen X, Yu H, Yu X, Hou L, Zhang Y, Guo Q. The Added Value of Combined Timed Up and Go Test, Walking Speed, and Grip Strength on Predicting Recurrent Falls in Chinese Community-dwelling Elderly. Clin Interv Aging 2021; 16:1801-1812. [PMID: 34675495 PMCID: PMC8502011 DOI: 10.2147/cia.s325930] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/11/2021] [Indexed: 12/22/2022] Open
Abstract
Purpose To determine whether combined performance-based models could exert better predictive values toward discriminating community-dwelling elderly with high risk of any-falls or recurrent-falls. Participants and Methods This prospective cohort study included a total of 875 elderly participants (mean age: 67.10±5.94 years) with 513 females and 362 males, recruited from Hangu suburb area of Tianjin, China. All participants completed comprehensive assessments. Methods We documented information about sociodemographic information, behavioral characteristics and medical conditions. Three functional tests—timed up and go test (TUGT), walking speed (WS), and grip strength (GS) were used to create combined models. New onsets of any-falls and recurrent-falls were ascertained at one-year follow-up appointment. Results In total 200 individuals experienced falls over a one-year period, in which 66 individuals belonged to the recurrent-falls group (33%). According to the receiver operating characteristic curve (ROC), the cutoff points of TUGT, WS, and GS toward recurrent-falls were 10.31 s, 0.9467 m/s and 0.3742 kg/kg respectively. We evaluated good performance as “+” while poor performance as “–”. After multivariate adjustment, we found “TUGT >10.31 s” showed a strong correlation with both any-falls (adjusted odds ratio (OR)=2.025; 95% confidence interval (CI)=1.425–2.877) and recurrent-falls (adjusted OR=2.150; 95%CI=1.169–3.954). Among combined functional models, “TUGT >10.31 s, GS <0.3742 kg/kg, WS >0.9467 m/s” showed strongest correlation with both any-falls (adjusted OR=5.499; 95%CI=2.982–10.140) and recurrent-falls (adjusted OR=8.260; 95%CI=3.880–17.585). And this combined functional model significantly increased discriminating abilities on screening recurrent-fallers than a single test (C-statistics=0.815, 95%CI=0.782–0.884, P<0.001), while not better than a single test in predicting any-fallers (P=0.083). Conclusion Elderly people with poor TUGT performance, weaker GS but quicker WS need to be given high priority toward fall prevention strategies for higher risks and frequencies. Meanwhile, the combined “TUGT–, GS–, WS+” model presents increased discriminating ability and could be used as a conventional tool to discriminate recurrent-fallers in clinical practice.
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Affiliation(s)
- Lu Wang
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Peiyu Song
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Cheng Cheng
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China.,Department of Rehabilitation, Tianjin Huanhu Hospital, Tianjin, People's Republic of China
| | - Peipei Han
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, People's Republic of China
| | - Liyuan Fu
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Xiaoyu Chen
- College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, People's Republic of China
| | - Hairui Yu
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Xing Yu
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Lin Hou
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Yuanyuan Zhang
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China
| | - Qi Guo
- Department of Rehabilitation, School of Medical Technology, Tianjin Medical University, Tianjin, People's Republic of China.,College of Rehabilitation Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, People's Republic of China
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12
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Jehu DA, Davis JC, Madden K, Parmar N, Liu-Ambrose T. Minimal Clinically Important Difference of Executive Function Performance in Older Adults Who Fall: A Secondary Analysis of a Randomized Controlled Trial. Gerontology 2021; 68:771-779. [PMID: 34657043 DOI: 10.1159/000518939] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 08/08/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Executive function is responsive to exercise and predictive of subsequent falls. Minimal clinically important differences (MCIDs) are critical for understanding whether observed changes are meaningful. However, MCIDs of many cognitive measures are not established. We aimed to determine MCIDs of the Digit Symbol Substitution Test ([DSST] processing speed measure), Stroop (inhibition measure), and Trail Making Test B-A (TMT; set-shifting measure), using anchor- and distribution-based approaches in older adults who have fallen and received the Otago Exercise Program (OEP) relative to usual care only (CON). Our secondary aim was to establish construct (convergent and divergent) validity of these measures. METHODS Complete case analyses of cognitive outcomes (DSST, Stroop, TMT, and Montreal Cognitive Assessment [MoCA]) were acquired at baseline and 1 year (NCT01029171; NCT003235960); participants were randomized to the OEP (n = 114/172; Age: 80.6 ± 6.1 years; 64.9% Female) or CON (n = 128/172; Age: 82.3 ± 5.8 years; 71.9% Female)]. The MoCA was used as the anchor. We estimated MCIDs using anchor- and distribution-based approaches. Anchor-based executive function change differences ([CD] 1 year minus baseline) observed in participants with meaningful changes in the MoCA (≥3 or ≤ -3 points) receiving the OEP were subtracted from the CON. An anchor-based receiver operator characteristic (ROC) curve was employed to identify optimal cut-off scores of the 3 executive function measures. The distribution-based approach (DA) accounted for variability in baseline and follow-up data. MCID ranges were estimated using these approaches. We used Spearman's correlations to explore convergent validity between executive function measures and other measures involving the same construct (DSST, Stroop, TMT, MoCA, and Mini-Mental State Examination), and divergent validity between executive function measures and variables reflecting different constructs (Geriatric Depression Scale, Instrumental Activities of Daily Living, sex, and body mass index). RESULTS Based on the 3 approaches, MCID improvement ranges were 3-5 symbols for the DSST (CD = 5; ROC = 2.5; DA = 3.3 symbols), and -11.5 to -26.0 s for the Stroop (CD = -26.0; ROC = -11.5; DA = -20.6 s). MCID decline ranges were -3 to -6 symbols for the DSST (CD = -5.2; ROC = -2.5; DA = -3.3 symbols) and 5.4-30.6 s for the Stroop (CD = 30.6; ROC = 5.4; DA = 20.6 s). MCIDs for the TMT were not meaningful due to high variability (Improvement: CD = -106.6; ROC = -18.4; DA = -69.1 s; Decline: CD = 69.1; ROC = 14.5; DA = 69.1 s). The executive function measures exhibited good convergent (r = -0.22 to r = 0.42) and divergent (r < -0.01 to r = 0.16) validity. CONCLUSIONS These established MCIDs will allow clinicians to interpret meaningful changes in executive function following exercise amongst older adults who have fallen. The DSST, Stroop, and TMT demonstrated good construct validity, supporting their use in comprehensive fall-risk assessments in older adults who fall.
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Affiliation(s)
- Deborah A Jehu
- Interdisciplinary Health Sciences Department, College of Allied Health Sciences, Augusta University, Augusta, Georgia, USA,
| | - Jennifer C Davis
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Social & Economic Change Laboratory, Faculty of Management, University of British Columbia-Okanagan Campus, Kelowna, British Columbia, Canada
| | - Kenneth Madden
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Gerontology and Diabetes Research Laboratory, Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Naaz Parmar
- Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Teresa Liu-Ambrose
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Aging, Mobility and Cognitive Neuroscience Laboratory, Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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13
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Liu-Ambrose T, Davis JC, Falck RS, Best JR, Dao E, Vesely K, Ghag C, Rosano C, Hsu CL, Dian L, Cook W, Madden KM, Khan KM. Exercise, Processing Speed, and Subsequent Falls: A Secondary Analysis of a 12-Month Randomized Controlled Trial. J Gerontol A Biol Sci Med Sci 2021; 76:675-682. [PMID: 33225343 DOI: 10.1093/gerona/glaa239] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Strength and balance retraining exercises reduce the rate of subsequent falls in community-dwelling older adults who have previously fallen. Exercise can also improve cognitive function, including processing speed. Given processing speed predicts subsequent falls, we aimed to determine whether improved processing speed mediated the effects of the Otago Exercise Program on the rate of subsequent: (i) total falls, (ii) non-injurious falls, (iii) moderate injurious falls, and (iv) serious injurious falls. METHOD A secondary complete case analysis of a 12-month, single-blind, randomized clinical trial among 256 of 344 adults aged at least 70 years who fell in the previous 12 months. Participants were randomized 1:1 to receive usual care plus the Otago Exercise Program (n = 123) or usual care (n = 133), consisting of fall prevention care provided by a geriatrician. The primary outcome was self-reported number of falls over 12 months (ie, rate of falls). Processing speed was assessed at baseline and at 12 months by the Digit Symbol Substitution Test (DSST). Causal mediation analyses were conducted using quasi-Bayesian estimates and 95% confidence intervals. RESULTS Exercise significantly reduced the rate of subsequent moderate injurious falls (IRR = 0.49; 95% CI: 0.31, 0.77; p = .002) and improved processing speed (estimated mean difference: 1.16 points; 95% CI: 0.11, 2.21). Improved DSST mediated the effect of exercise on the rate of subsequent moderate injurious falls (estimate: -0.06; 95% CI: -0.15, -0.001; p = .036). CONCLUSION Improved processing speed may be a mechanism by which exercise reduces subsequent moderate injurious falls in older adults who fell previously. CLINICAL TRIALS REGISTRATION NUMBER ClinicalTrials.gov Protocol Registration System:NCT01029171: https://clinicaltrials.gov/ct2/show/NCT01029171NCT00323596: https://clinicaltrials.gov/ct2/show/NCT00323596.
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Affiliation(s)
- Teresa Liu-Ambrose
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Jennifer C Davis
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada.,Social & Economic Change Laboratory, Faculty of Management, University of British Columbia, Kelowna, Canada
| | - Ryan S Falck
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - John R Best
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Elizabeth Dao
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Kristin Vesely
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Cheyenne Ghag
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Caterina Rosano
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - C L Hsu
- Aging, Mobility, and Cognitive Neuroscience Laboratory, Department of Physical Therapy, University of British Columbia, Vancouver, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada
| | - Larry Dian
- Department of Medicine, Division of Geriatric Medicine, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Wendy Cook
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada.,Department of Medicine, Division of Geriatric Medicine, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Kenneth M Madden
- Department of Medicine, Division of Geriatric Medicine, Faculty of Medicine, University of British Columbia, Vancouver, Canada
| | - Karim M Khan
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, British Columbia, Canada.,Department of Family Practice, Faculty of Medicine, University of British Columbia, Vancouver, Canada
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14
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Jehu DA, Davis JC, Barha CK, Vesely K, Cheung W, Ghag C, Liu-Ambrose T. Sex Differences in Subsequent Falls and Falls Risk: A Prospective Cohort Study in Older Adults. Gerontology 2021; 68:272-279. [PMID: 34186535 DOI: 10.1159/000516260] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 03/31/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Sex differences for subsequent falls and falls risk factors in community-dwelling older adults who have fallen are unknown. Our aim was to: (1) compare the number of falls between sexes, (2) identify modifiable falls risk factors, and (3) explore the interaction of sex on falls risk factors in older adults who fall. METHODS Four hundred sixty-two community dwellers seeking medical attention after an index fall were recruited from the Vancouver Falls Prevention Clinic and participated in this 12-month prospective cohort study. Ninety-six participants were part of a randomized controlled trial of exercise. Falls were tracked with monthly falls calendars. Demographics, falls risk measures, and the number of subsequent falls were compared between sexes. A principal component analysis (PCA) was employed to reduce the falls risk measures to a smaller set of factors. The PCA factors were used in negative binomial regression models to predict the number of subsequent falls. Age, exposure time (i.e., number of falls monitoring days), and prescribed exercise (yes/no) were used as covariates, and sex (male/female) and PCA factors were used as main effects. The interaction of sex by PCA factor was then included. RESULTS Males fell more over 12 months (males: 2.80 ± 6.86 falls; females: 1.25 ± 2.63 falls) than females, and poorer executive function predicted falls in males. Four PCA factors were defined - impaired cognition and mobility, low mood and self-efficacy, mobility resilience, and perceived poor health - each predicted the number of falls. The sex by mobility resilience interaction suggested that mobility resilience was less protective of falls in males. CONCLUSION Modifiable risk factors related to cognition, physical function, psychological wellbeing, and health status predicted subsequent falls. In males, better mobility was not as protective of falls compared with females. This may be due to males' poorer executive function, contributing to decreased judgement or slowed decision-making during mobility. These results may inform efficacious sex-specific falls prevention strategies.
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Affiliation(s)
- Deborah A Jehu
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Jennifer C Davis
- Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Social & Economic Change Laboratory, Faculty of Management, University of British Columbia-Okanagan Campus, Kelowna, British Columbia, Canada
| | - Cindy K Barha
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Kristin Vesely
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Winnie Cheung
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Cheyenne Ghag
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
| | - Teresa Liu-Ambrose
- Department of Physical Therapy, Aging, Mobility and Cognitive Neuroscience Laboratory, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada.,Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada.,Djavad Mowafaghian Centre for Brain Health, Vancouver Coastal Health Research Institute, Vancouver, British Columbia, Canada
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15
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Sawers A, Hafner BJ. Performance-based balance tests, combined with the number of falls recalled in the past year, predicts the incidence of future falls in established unilateral transtibial prosthesis users. PM R 2021; 14:434-444. [PMID: 33951296 DOI: 10.1002/pmrj.12627] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 04/01/2021] [Accepted: 04/19/2021] [Indexed: 11/06/2022]
Abstract
BACKGROUND Falls are common and consequential events for lower limb prosthesis (LLP) users. Currently, there are no models based on prospective falls data that clinicians can use to predict the incidence of future falls in LLP users. Assessing who is at risk for falls, and thus most likely to need and benefit from intervention, remains a challenge. OBJECTIVE To determine whether select performance-based balance tests predict future falls in established, unilateral transtibial prosthesis users (TTPU). DESIGN Multisite prospective observational study. SETTING Research laboratory and prosthetics clinic. PARTICIPANTS Forty-five established, unilateral TTPU. INTERVENTION Not applicable. MAIN OUTCOME MEASURES The number of falls reported over a prospective 6-month period. Timed Up-and-Go (TUG) and Four-Square Step Test (FSST) times, as well as Narrowing Beam Walking Test scores were recorded at baseline, along with the number of falls recalled over the past 12 months and additional potential fall-risk factors. RESULTS The final negative binomial regression model, which included TUG (P = .044) and FSST (P = .159) times, as well as the number of recalled falls (P = .009), was significantly better than a null model at predicting the number of falls over the next 6 months (X2 [3] = 11.6, P = .009) and fit the observed fall count data (X2 [41] = 36.12, P = .20). The final model provided a significant improvement in fit to the prospective fall count data over a model with fall recall alone X2 (1) = 4.342, P < .05. CONCLUSION No combination of performance-based balance tests alone predicted the incidence of future falls in our sample of established, unilateral TTPU. Rather, a combination of the number of falls recalled over the past 12 months, along with TUG and FSST times, but not NBWT scores, was required to predict the number of "all-cause" falls over the next 6 months. The resulting predictive model may serve as a suitable method for clinicians to predict the incidence of falls in established, unilateral TTPU.
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Affiliation(s)
- Andrew Sawers
- Department of Kinesiology, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Brian J Hafner
- Department of Rehabilitation Medicine, University of Washington, Seattle, Washington, USA
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16
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Cohen JN, Seng E, Foley FW. Cognitive and motor slowing mediate the relationship between depression and falls in multiple sclerosis patients. Mult Scler Relat Disord 2021; 50:102808. [PMID: 33596493 DOI: 10.1016/j.msard.2021.102808] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/08/2021] [Accepted: 01/31/2021] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Given the limited research concerning the relationship between depression and falls in multiple sclerosis (MS), this study aimed to examine the direct and indirect association between fall history and depressive symptoms. METHODS One hundred and forty seven MS patients had completed at least one neuropsychological assessment that included detailed information regarding fall history, as well as measures of depression, motor function, and cognitive processing speed. RESULTS Fall history was associated with higher depressive symptoms and poorer overall motor function. Higher self-reported depressive symptoms were associated with higher odds of falls in the last year (OR = 1.64, 95% CI 1.16, 2.31) in an age adjusted model. Cognitive and motor slowing serially mediated the relationship between depressive symptoms and fall history (estimate = 0.060, 95% CI = 0.01, 0.15). CONCLUSIONS With the extensive research on the cognitive and motor correlates of falls in MS, our findings suggest that depressive symptoms are also associated with falls in people with MS. Moreover, this study provides preliminary support for a pathway by which depressive symptoms are related to falls in part through their relationships with cognitive and motor slowing.
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Affiliation(s)
- Jenna N Cohen
- Ferkauf Graduate School of Psychology, Yeshiva University, 1300 Morris Park Avenue, Bronx, NY 10461, United States
| | - Elizabeth Seng
- Ferkauf Graduate School of Psychology, Yeshiva University, 1300 Morris Park Avenue, Bronx, NY 10461, United States; The Saul R Korey Department of Neurology, Albert Einstein College of Medicine, 1225 Morris Park Avenue, Van Etten Building, Bronx, NY 10461, United States
| | - Frederick W Foley
- Ferkauf Graduate School of Psychology, Yeshiva University, 1300 Morris Park Avenue, Bronx, NY 10461, United States; Holy Name Medical Center Multiple Sclerosis Center, 718 Teaneck Road, Teaneck, NJ 07666, United States.
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17
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Marques NR, Dos Santos APDML, Camilo GF, Cardoso BC, Brando ND, Hoffman J, Navega MT, de Abreu DCCL. Effect of different residential settings on gait kinematic parameters in older adults with cognitive impairment. Hum Mov Sci 2020; 75:102747. [PMID: 33348290 DOI: 10.1016/j.humov.2020.102747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 12/09/2020] [Accepted: 12/09/2020] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To compare the parameters of gait kinematics of older adults with cognitive impairment who live in community dwellings or those living or spending most of the time in non-family environment settings. METHODS The sample was composed of 33 older adults of both sexes with cognitive impairment. Participants were separated into three groups: a community-dwelling older adult group comprised of 11 subjects; a semi-institutionalized older adult group comprised of 10 older adults attended in a geriatric daycare institution; and an institutionalized older adult group comprised of 12 older adults living in long-term institutions. Gait kinematics were recorded by pressure sensors (footswitches). Fifty gait cycles at self-selected pace were analyzed to obtain: gait speed, stride length, stance, swing, and stride time. The variability of these parameters was also analyzed. RESULTS MANCOVA identified the main effect of groups (p < 0.001). Gait speed of older adults living in long-term institutions and older adults attended in geriatric daycare institutions was slower than community-living older adults (p < 0.001 and p = 0.04, respectively). Swing and stride time variability was higher in older adults living in long-term institutions (p = 0.003 and p = 0.001) and in older adults attended in geriatric daycare institutions (p = 0.02 and p = 0.001) than in community-dwelling older adults. CONCLUSION The most important finding was that older adults with cognitive impairment who need non-family residential setting care had higher gait kinematics abnormalities, which may increase the risk of falls, compared to those who live in the community.
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Affiliation(s)
- Nise Ribeiro Marques
- Health Science Center, Sacred Heart University, USC, Bauru, Brazil; Department of Health Science, Ribeirão Preto Medical School, University of São Paulo, USP, Ribeirão Preto, Brazil.
| | | | - Giovanna Ferreira Camilo
- Department of Physical Therapy and Occupational Therapy, São Paulo State University, UNESP, Marília, Brazil
| | | | | | - Julia Hoffman
- Health Science Center, Sacred Heart University, USC, Bauru, Brazil
| | - Marcelo Tavella Navega
- Department of Physical Therapy and Occupational Therapy, São Paulo State University, UNESP, Marília, Brazil
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Burzynska AZ, Voss MW, Fanning J, Salerno EA, Gothe NP, McAuley E, Kramer AF. Sensor-measured sedentariness and physical activity are differentially related to fluid and crystallized abilities in aging. Psychol Aging 2020; 35:1154-1169. [PMID: 32969693 PMCID: PMC8415093 DOI: 10.1037/pag0000580] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Aerobic exercise and physical activity (PA) are known to benefit cognition in adulthood. However, a typical older adult spends most of the day sedentary or in light PA, behaviors that are typically poorly captured by questionnaires. To better understand the associations between time spent in different intensities of lifestyle PA and cognition, we measured average time spent daily in sedentariness, light, and moderate to vigorous PA using hip-worn sensors (ActiGraph accelerometers). We studied baseline data from 228 cognitively normal adults (Age 60-80) who took part in a clinical trial (clinical study identifier: NCT01472744). Fluid (processing speed, memory, and reasoning) and crystallized abilities (vocabulary knowledge) were assessed with the Virginia Cognitive Aging Battery. Adjusting for age, sex, and several modifiable socioeconomic, physical and functional health factors, time spent daily in moderate to vigorous PA was positively related with fluid abilities (perceptual speed and reasoning). Furthermore, we found that those spending more time sedentary performed better on vocabulary knowledge and reasoning tasks. In contrast, time spent in light PA was not related to either fluid or crystallized abilities. Our results add to the previous literature by providing the first sensor-based evidence that crystallized and fluid abilities in older age may be associated with engagement in different intensities of daily activity. Moreover, our findings suggest that the behavior of moderate to vigorous PA is at least as important in relation to cognition as the desirable long-term physiological effects of higher intensity PA and exercise. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
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Affiliation(s)
- Agnieszka Z Burzynska
- Department of Human Development and Family Studies/Molecular, Cellular and Integrative Neurosciences
| | | | - Jason Fanning
- Department of Internal Medicine and Health and Exercise Sciences
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19
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Meyer M, Constancias F, Vogel T, Kaltenbach G, Schmitt E. Gait Disorder among Elderly People, Psychomotor Disadaptation Syndrome: Post-Fall Syndrome, Risk Factors and Follow-Up - A Cohort Study of 70 Patients. Gerontology 2020; 67:17-24. [PMID: 33254165 DOI: 10.1159/000511356] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2020] [Accepted: 09/05/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Falls among older people are a major health issue and the first cause of accidental death after 75 years of age. Post-fall syndrome (PFS) is commonly known and yet poorly studied. OBJECTIVE Identify risk factors for PFS and do a follow-up 1 year later. METHODS We included all patients over 70 years of age hospitalized after suffering a fall in a case-control study, and then followed them in a cohort study. PFS was retained in case of functional mobility decline (transferring, walking) occurring following a fall in the absence of an acute neurological, orthopedic or rheumatic pathology directly responsible for the decline. The data initially collected were: clinical (anamnestic, emergency and departmental/ward evolution, medical history, lifestyle, treatments, clinical examination items); and imaging if the patient had been subjected to brain imaging in the last 3 years prior to inclusion. Regarding the follow-up at 1 year, we collected from the general physician the occurrence and the characteristics of new falls, functional mobility assessment, hospitalization and death. RESULTS Inclusion took place from March 29, 2016 to June 7, 2016 and follow-up until June 30, 2017. We included 70 patients. A total of 29 patients exhibited a PFS (41.4 %). Risk factors for PFS included age, walking disorder prior to the fall, the use of a walking aid prior to the fall, no unaccompanied outdoor walk in the week before the fall, visual impairment making close reading impossible, stiffness in ankle dorsiflexion, grip strength and the fear of falling. Among patients with PFS, 52.9% could still perform a transfer at 1 year and 64.7% could still walk against 80.7% and 85.2%, respectively, for patients without PFS. CONCLUSION The study showed the existence of body functions/structure impairments and activity limitations prior to the fall among patients exhibiting a PFS. This suggests the existence of a pre-fall syndrome, i.e., a psychomotor disadaptation syndrome existing prior to the fall. Among the 8 risk factors, fear of falling, vision impairment and muscle strength could be targeted for improvement. The diagnosis of PFS could be a marker of loss of functional mobility at 1 year.
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Affiliation(s)
- Maxence Meyer
- Geriatric Department, CHU Strasbourg, Strasbourg, France,
| | | | - Thomas Vogel
- Geriatric Department, CHU Strasbourg, Strasbourg, France
| | | | - Elise Schmitt
- Geriatric Department, CHU Strasbourg, Strasbourg, France
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Rommelse N, Luman M, Kievit R. Slow processing speed: a cross-disorder phenomenon with significant clinical value, and in need of further methodological scrutiny. Eur Child Adolesc Psychiatry 2020; 29:1325-1327. [PMID: 32915272 DOI: 10.1007/s00787-020-01639-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nanda Rommelse
- Karakter Child and Adolescent Psychiatry University Center, Nijmegen, The Netherlands.
- Radboud University Medical Centre, Nijmegen, The Netherlands.
| | - Marjolein Luman
- Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Levvel Specialists in Youth and Family Care, Amsterdam, The Netherlands
| | - Rogier Kievit
- MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
- Cognitive Neuroscience Department, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, Nijmegen, The Netherlands
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21
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Hirase T, Makizako H, Okubo Y, Lord SR, Okita M, Nakai Y, Takenaka T, Kubozono T, Ohishi M. Falls in Community-Dwelling Older Adults with Lower Back or Knee Pain Are Associated with Cognitive and Emotional Factors. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E4960. [PMID: 32660067 PMCID: PMC7400355 DOI: 10.3390/ijerph17144960] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/02/2020] [Accepted: 07/06/2020] [Indexed: 12/18/2022]
Abstract
(1) Background: The present study aimed to examine physical, cognitive and emotional factors affecting falls in community-dwelling older adults with and without pain; (2) Methods: Data from 789 older adults who participated in a community-based health survey were analyzed. Participants completed questionnaires on the presence of pain and previous falls. Muscle weakness (handgrip strength < 26.0 kg for men and < 18.0 kg for women) and low skeletal muscle mass (appendicular skeletal muscle mass index < 7.0 kg/m2 for men and < 5.7 kg/m2 for women) were determined. Mild cognitive impairment (MCI) and depressive symptoms were assessed using the National Center for Geriatrics and Gerontology-Functional Assessment Tool and 15-item geriatric depression scale (GDS-15), respectively; (3) Results: In participants with pain, MCI and GDS-15 were associated with previous falls after adjusting for age, sex, education and medication use. In participants without pain, muscle weakness and low skeletal muscle mass were associated with previous falls when adjusting for the above covariates; (4) Conclusions: Falls in participants with pain were associated with cognitive and emotional factors, whereas falls in those without pain were associated with physical factors. Fall prevention interventions for older adults with pain may require tailored strategies to address cognitive and emotional factors.
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Affiliation(s)
- Tatsuya Hirase
- Department of Physical Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8520, Japan; (T.H.); (M.O.)
| | - Hyuma Makizako
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima 890-8544, Japan;
| | - Yoshiro Okubo
- Falls, Balance and Injury Research Centre, Neuroscience Research Australia, Sydney, NSW 2031, Australia; (Y.O.); (S.R.L.)
| | - Stephen R. Lord
- Falls, Balance and Injury Research Centre, Neuroscience Research Australia, Sydney, NSW 2031, Australia; (Y.O.); (S.R.L.)
| | - Minoru Okita
- Department of Physical Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8520, Japan; (T.H.); (M.O.)
| | - Yuki Nakai
- Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima 890-8544, Japan;
| | - Toshihiro Takenaka
- Tarumizu Municipal Medical Center, Tarumizu Chuo Hospital, Kagoshima 891-2124, Japan;
| | - Takuro Kubozono
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Science, Kagoshima University, Kagoshima 890-8520, Japan; (T.K.); (M.O.)
| | - Mitsuru Ohishi
- Department of Cardiovascular Medicine and Hypertension, Graduate School of Medical and Dental Science, Kagoshima University, Kagoshima 890-8520, Japan; (T.K.); (M.O.)
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Affiliation(s)
- Teresa Liu-Ambrose
- Department of Physical Therapy, University of British Columbia, Vancouver, Canada
| | | | - Karim M Khan
- Center for Hip Health and Mobility, University of British Columbia, Vancouver, Canada
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Murphy SL, Tapper EB, Blackwood J, Richardson JK. Why Do Individuals with Cirrhosis Fall? A Mechanistic Model for Fall Assessment, Treatment, and Research. Dig Dis Sci 2019; 64:316-323. [PMID: 30327964 DOI: 10.1007/s10620-018-5333-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 10/09/2018] [Indexed: 12/12/2022]
Abstract
Falls are prevalent for people with cirrhosis and commonly lead to loss of independence, reduced quality of life, and mortality. Despite a critical need for fall prevention in this population, cirrhosis-specific fall-related mechanisms are not well understood. We posit that most falls in this patient population are due to a coalescence of discrete subclinical impairments that are not typically detected at the point of care. The combined effect of these subtle age- and disease-related neurocognitive and muscular impairments leads to the inability to respond successfully to a postural perturbation within the available 300 to 400 ms. This article provides a conceptual model of physiological resilience to avoid a fall that focuses on attributes that underlie the ability to withstand a postural perturbation and their clinical evaluation. Evidence supporting this model in cirrhosis and other high fall risk conditions will be synthesized and suggestions for fall assessment and treatment will be discussed.
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Affiliation(s)
- Susan L Murphy
- Department of Physical Medicine and Rehabilitation, University of Michigan, 24 Frank Lloyd Wright Drive, PO Box 344, Ann Arbor, MI, 48106, USA. .,Geriatric Research, Education and Clinical Center, Veterans Affairs Ann Arbor Health Care System, Ann Arbor, MI, USA.
| | - Elliot B Tapper
- Department of Internal Medicine, Division of Gasteroenterology, University of Michigan, Ann Arbor, MI, USA. .,Veterans Affairs Ann Arbor Health Care System, Ann Arbor, MI, USA.
| | - Jennifer Blackwood
- Department of Physical Therapy, University of Michigan - Flint Campus, Flint, MI, USA
| | - James K Richardson
- Department of Physical Medicine and Rehabilitation, University of Michigan, Ann Arbor, MI, USA
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Song W, Intrator O, Lee S, Boockvar K. Antihypertensive Drug Deintensification and Recurrent Falls in Long-Term Care. Health Serv Res 2018; 53:4066-4086. [PMID: 30353536 DOI: 10.1111/1475-6773.13074] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To examine the relationship between antihypertensive drug deintensification and recurrent falls in long-term care. DATA SOURCES/SETTINGS Department of Veterans Affairs (VA) inpatient, outpatient, and purchased care data, Minimum Data Set assessments from VA nursing homes (NHs), and Medicare claims from fiscal years 2010 - 2015. STUDY DESIGN We identified NH residents with evidence of overaggressive antihypertensive treatment, defined as systolic blood pressure (SBP) 80-120 and an index fall. Recurrent fall, hospitalization, and mortality within 30 days were compared between veterans whose antihypertensive medications were deintensified versus those whose antihypertensive medications were not using propensity score methods (PSM). PRINCIPAL FINDINGS Among 2,212 NH residents with possibly overaggressive antihypertensive treatment, 11 percent experienced antihypertensive drug deintensification. Lower blood pressure, >1 antihypertensive drug, no congestive heart failure, fracture from index fall, and older age were associated with higher likelihood of deintensification. Antihypertensive deintensification was associated with statistically significant (p-value < .01) lower risk of recurrent fall among residents with SBP 80-100 (marginal effect = -11.4 percent; PSM = -13.6 percent) and higher risk of death among residents with SBP 101-120 (marginal effect = 2.1 percent, p-value = .07; with PSM = 4.3 percent, p-value = .04). CONCLUSIONS Results provide some needed evidence and guidelines for deintensifying antihypertensive medication among frail older residents; since hypertension is prevalent among 54 percent of NH residents, the potential impact of new evidence is great.
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Affiliation(s)
- Wei Song
- VA Central Office Geriatrics & Extended Care, Data & Analysis Center (GECDAC), Washington, DC.,Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Orna Intrator
- VA Central Office Geriatrics & Extended Care, Data & Analysis Center (GECDAC), Washington, DC.,Department of Public Health Sciences, University of Rochester School of Medicine and Dentistry, Rochester, NY
| | - Sei Lee
- San Francisco VA Health Care System and University of California, San Francisco, CA
| | - Kenneth Boockvar
- James J. Peters VA Medical Center, Icahn School of Medicine at Mount Sinai, Bronx, NY.,The New Jewish Home Research Institute on Aging, Bronx, NY
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The cognitive complexity of concurrent cognitive-motor tasks reveals age-related deficits in motor performance. Sci Rep 2018; 8:6094. [PMID: 29666388 PMCID: PMC5904104 DOI: 10.1038/s41598-018-24346-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/29/2018] [Indexed: 01/16/2023] Open
Abstract
Aging reduces cognitive functions, and such impairments have implications in mental and motor performance. Cognitive function has been recently linked to the risk of falls in older adults. Physical activities have been used to attenuate the declines in cognitive functions and reduce fall incidence, but little is known whether a physically active lifestyle can maintain physical performance under cognitively demanding conditions. The aim of this study was to verify whether physically active older adults present similar performance deficits during upper limb response time and precision stepping walking tasks when compared to younger adults. Both upper limb and walking tasks involved simple and complex cognitive demands through decision-making. For both tasks, decision-making was assessed by including a distracting factor to the execution. The results showed that older adults were substantially slower than younger individuals in the response time tasks involving decision-making. Similarly, older adults walked slower and extended the double support periods when precision stepping involved decision-making. These results suggest that physically active older adults present greater influence of cognitive demanding contexts to perform a motor task when compared to younger adults. These results underpin the need to develop interventions combining cognitive and motor contexts.
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Reference data on reaction time and aging using the Nintendo Wii Balance Board: A cross-sectional study of 354 subjects from 20 to 99 years of age. PLoS One 2017; 12:e0189598. [PMID: 29287063 PMCID: PMC5747451 DOI: 10.1371/journal.pone.0189598] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 11/28/2017] [Indexed: 11/26/2022] Open
Abstract
Background Falls among older adults is one of the major public health challenges facing the rapidly changing demography. The valid assessment of reaction time (RT) and other well-documented risk factors for falls are mainly restricted to specialized clinics due to the equipment needed. The Nintendo Wii Balance Board has the potential to be a multi-modal test and intervention instrument for these risk factors, however, reference data are lacking. Objective To provide RT reference data and to characterize the age-related changes in RT measured by the Nintendo Wii Balance Board. Method Healthy participants were recruited at various locations and their RT in hands and feet were tested by six assessors using the Nintendo Wii Balance Board. Reference data were analysed and presented in age-groups, while the age-related change in RT was tested and characterized with linear regression models. Results 354 participants between 20 and 99 years of age were tested. For both hands and feet, mean RT and its variation increased with age. There was a statistically significant non-linear increase in RT with age. The averaged difference between male and female was significant, with males being faster than females for both hands and feet. The averaged difference between dominant and non-dominant side was non-significant. Conclusion This study reported reference data with percentiles for a new promising method for reliably testing RT. The RT data were consistent with previously known effects of age and gender on RT.
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Bayen E, Jacquemot J, Netscher G, Agrawal P, Tabb Noyce L, Bayen A. Reduction in Fall Rate in Dementia Managed Care Through Video Incident Review: Pilot Study. J Med Internet Res 2017; 19:e339. [PMID: 29042342 PMCID: PMC5663952 DOI: 10.2196/jmir.8095] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 08/08/2017] [Accepted: 08/09/2017] [Indexed: 11/15/2022] Open
Abstract
Background Falls of individuals with dementia are frequent, dangerous, and costly. Early detection and access to the history of a fall is crucial for efficient care and secondary prevention in cognitively impaired individuals. However, most falls remain unwitnessed events. Furthermore, understanding why and how a fall occurred is a challenge. Video capture and secure transmission of real-world falls thus stands as a promising assistive tool. Objective The objective of this study was to analyze how continuous video monitoring and review of falls of individuals with dementia can support better quality of care. Methods A pilot observational study (July-September 2016) was carried out in a Californian memory care facility. Falls were video-captured (24×7), thanks to 43 wall-mounted cameras (deployed in all common areas and in 10 out of 40 private bedrooms of consenting residents and families). Video review was provided to facility staff, thanks to a customized mobile device app. The outcome measures were the count of residents’ falls happening in the video-covered areas, the acceptability of video recording, the analysis of video review, and video replay possibilities for care practice. Results Over 3 months, 16 falls were video-captured. A drop in fall rate was observed in the last month of the study. Acceptability was good. Video review enabled screening for the severity of falls and fall-related injuries. Video replay enabled identifying cognitive-behavioral deficiencies and environmental circumstances contributing to the fall. This allowed for secondary prevention in high-risk multi-faller individuals and for updated facility care policies regarding a safer living environment for all residents. Conclusions Video monitoring offers high potential to support conventional care in memory care facilities.
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Affiliation(s)
- Eleonore Bayen
- Pitie-Salpetriere Hospital - Assistance Publique Hôpitaux de Paris (APHP) & University Pierre et Marie Curie, Department of Neuro-Rehabilitation, Global Brain Health Institute, Memory and Aging Center, University of California, San Francisco, Paris, France
| | - Julien Jacquemot
- SafelyYou Inc. at SkyDeck (Chief Technology Officer), Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, United States
| | - George Netscher
- SafelyYou Inc. at SkyDeck (Chief Technology Officer), Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, United States
| | - Pulkit Agrawal
- SafelyYou Inc. at SkyDeck (Chief Architect), Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, United States
| | | | - Alexandre Bayen
- Center for Information Technology Research in the Interest of Society and SafelyYou Inc. at SkyDeck (Chief Scientist), Electrical Engineering and Computer Sciences, University of California, Berkeley, CA, United States
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Kuchel GA. Function Begets Function and Resilience in Old Age: Is Precision Gerontology Possible? J Am Geriatr Soc 2017; 65:1141-1144. [DOI: 10.1111/jgs.14901] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George A. Kuchel
- UCONN; Center on Aging; University of Connecticut; UConn Health; Farmington Connecticut
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Manning KJ, Wolfson LI. Decreasing Fall Risk: Intensive Cognitive Training and Blood Pressure Control. J Am Geriatr Soc 2017; 65:906-908. [PMID: 28388811 DOI: 10.1111/jgs.14896] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Kevin J Manning
- Department of Psychiatry, School of Medicine, University of Connecticut, Farmington, Connecticut
| | - Leslie I Wolfson
- Department of Neurology, School of Medicine, University of Connecticut, Farmington, Connecticut
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