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Savikangas T, Sipilä S, Rantalainen T. Associations of physical activity intensities, impact intensities and osteogenic index with proximal femur bone traits among sedentary older adults. Bone 2021; 143:115704. [PMID: 33099029 DOI: 10.1016/j.bone.2020.115704] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 10/09/2020] [Accepted: 10/17/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Dynamic high-intensity physical activity is thought to be beneficial for older adults' bone health. Traditional volume-based processing of accelerometer-measured physical activity data, quantified on a minute-per-minute basis, may average out sporadic high impact activity, whereas accelerometer data processing approaches based on identifying impacts can capture also these potentially beneficial short activity bursts. We investigated the associations between habitual physical activity and proximal femur bone traits among sedentary older adults utilizing three different numerical treatments of accelerometer-data to examine, if impact-based processing approaches are more suitable to assess bone loading than volume-based processing of physical activity data among older adults. METHODS This cross-sectional study utilized the baseline data from the PASSWORD-study (n = 284, mean ± SD age 74 ± 4 years, 57% women). Total femur bone mineral content (BMC) and bone mineral density (BMD), femoral neck BMC, BMD, section modulus and minimal width (MNW) were measured with dual energy x-ray absorptiometry. Physical activity was measured for seven consecutive days with a tri-axial accelerometer. Raw acceleration data was processed in three different ways and quantified as i) mean daily minutes in sedentary, light and moderate-to-vigorous-intensity activity, ii) mean daily number of acceleration peaks divided into low (1.5 g to 2.0 g), medium (2.0 g to 2.5 g) and high (>2.5 g) impacts, and iii) mean daily osteogenic index, which is a summary score calculated from log-transformed number of impact peaks in 32 intensity bands (≥1.3 g). Associations between physical activity measures and each bone trait were estimated with multiple linear regression adjusted with covariates (age, sex, weight, height, smoking, physical function, medication). RESULTS Participants recorded on average 10 h sedentary, 2.5 h light and 33 min moderate-to-vigorous activity, and 3937 low, 494 medium and 157 high impacts per day. Mean osteogenic index score was 173. Light physical activity was positively associated with all bone traits (beta = 0.147 to 0.182, p < 0.001 to p = 0.005) except MNW. Sedentary or moderate-to-vigorous activity, low, medium or high impacts or osteogenic index were not associated with any bone parameter. CONCLUSIONS Light physical activity may decelerate the age-related bone loss in older adults who do not meet the physical activity recommendations. In this population, the amount of high impact activity may be insufficient to stimulate bone remodelling.
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Affiliation(s)
- Tiina Savikangas
- 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.
| | - Timo Rantalainen
- Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland.
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Murray AA, Stock JT. Muscle force interacts with stature to influence functionally related polar second moments of area in the lower limb among adult women. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 173:258-275. [PMID: 32735047 PMCID: PMC7496392 DOI: 10.1002/ajpa.24097] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Revised: 03/19/2020] [Accepted: 05/20/2020] [Indexed: 01/22/2023]
Abstract
Objectives We sought to determine the relationships between muscle size, function, and polar second moments of area (J) at the midshaft femur, proximal tibia, and midshaft tibia. Materials and Methods We used peripheral quantitative computed tomography to quantify right femoral and tibial J and soft tissue cross‐sectional areas, and force plate mechanography to quantify peak power output and maximum force of the right limb, among athletic women and control subjects. Results Lower limb bone J exhibited strong relationships with estimated force but not power between both groups. Among controls, the strongest relationships between force and J were found at the midshaft femur. Among athletes, these relationships shifted to the tibia, regardless of body size, likely reflecting functional strain related to the major knee extensors and ankle plantarflexors. Together, muscle force and stature explained as much as 82 and 48% of the variance in lower limb bone J among controls and athletes, respectively. Discussion Results highlight the importance of considering relevant muscle function variables (e.g., force and lever arm lengths) when interpreting behavioral signatures from skeletal remains. Future work to improve the estimation of muscle force from skeletal remains, and incorporate it with lever arm length into analyses, is warranted. Results also suggest that, in doing so, functional relationships between a given section location and musculature should be considered.
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Affiliation(s)
- Alison A Murray
- Department of Anthropology, University of Victoria, Victoria, British Columbia, Canada.,Department of Archaeology, University of Cambridge, Cambridge, UK
| | - Jay T Stock
- Department of Archaeology, University of Cambridge, Cambridge, UK.,Department of Anthropology, Western University, London, Ontario, Canada.,Department of Archaeology, Max Planck Institute for the Science of Human History, Jena, Germany
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Rantalainen T, Finni T, Walker S. Jump height from inertial recordings: A tutorial for a sports scientist. Scand J Med Sci Sports 2019; 30:38-45. [DOI: 10.1111/sms.13546] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 08/06/2019] [Accepted: 08/28/2019] [Indexed: 11/26/2022]
Affiliation(s)
- Timo Rantalainen
- Faculty of Sport and Health Sciences Neuromuscular Research Center University of Jyväskylä Jyväskylä Finland
| | - Taija Finni
- Faculty of Sport and Health Sciences Neuromuscular Research Center University of Jyväskylä Jyväskylä Finland
| | - Simon Walker
- Faculty of Sport and Health Sciences Neuromuscular Research Center University of Jyväskylä Jyväskylä Finland
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Nygård M, Mosti MP, Brose L, Flemmen G, Stunes AK, Sørskår-Venæs A, Heggelund J, Wang E. Maximal strength training improves musculoskeletal health in amphetamine users in clinical treatment. Osteoporos Int 2018; 29:2289-2298. [PMID: 29978257 DOI: 10.1007/s00198-018-4623-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/26/2018] [Indexed: 12/01/2022]
Abstract
UNLABELLED Amphetamine use leads to impaired skeletal health and elevated risk of osteoporosis. In the current study, we document that maximal strength training (MST), as a part of clinical treatment, works as a countermeasure, improving muscle force generating capacity, body composition, and skeletal health at sites particularly prone to osteoporotic fractures. INTRODUCTION Amphetamine users have attenuated musculoskeletal health. MST with heavy loads, few repetitions, and emphasis on maximal mobilization in the concentric phase may increase muscle force generating capacity and skeletal health. This study investigated if MST-induced improvements in force generating capacity improved bone mineral density (BMD), trabecular bone score, and body composition in amphetamine users participating in 3-months clinical treatment. METHODS Of 40 randomized patients, 23 completed the study: 11 in the supervised training group (TG; 8 men, 3 women, 34 ± 10 years) and 12 in the control group (CG; 9 men, 3 women, 32 ± 8 years). The TG performed hack-squat MST three times a week for 12 weeks with an intensity of ~90% of one repetition maximum (1RM). Both groups attended conventional clinical treatment. Pre-training and post-training, we assessed hack-squat 1RM and rate of force development (RFD), BMD, body composition and trabecular bone score by dual X-ray absorptiometry, and serum bone metabolism markers. RESULTS MST induced increases in 1RM (70%) and RFD (86%), and resulted in BMD improvements at lumbar spine (3.6%) and total hip (2.4%); all improvements were different from CG (p < 0.05). Both the 1RM and RFD increases were associated with BMD improvements (lumbar spine: r = 0.73 (1RM), r = 0.60 (RFD); total hip: r = 0.61 (1RM); all p < 0.05). No differences were observed in trabecular bone score or bone metabolism markers. CONCLUSIONS MST improved force generating capacity and skeletal health at sites prone to bone loss in amphetamine users, and advocate that MST should be implemented as a clinical strategy to restore the patients' musculoskeletal health.
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Affiliation(s)
- M Nygård
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway.
- Department of Mental Health, St. Olav's University Hospital, Trondheim, Norway.
| | - M P Mosti
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- St. Olav's University Hospital, Trondheim, Norway
| | - L Brose
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
| | - G Flemmen
- Department of Research and Development, Clinic of Substance Use and Addiction Medicine, St. Olav's University Hospital, Trondheim, Norway
| | - A K Stunes
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- St. Olav's University Hospital, Trondheim, Norway
| | - A Sørskår-Venæs
- Clinic of Substance Use and Addiction Medicine, St. Olav's University Hospital, Trondheim, Norway
| | - J Heggelund
- Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Mental Health, St. Olav's University Hospital, Trondheim, Norway
| | - E Wang
- Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway
- Faculty of Health and Social Sciences, Molde University College, Molde, Norway
- Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA
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5
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Taani MH, Kovach CR, Buehring B. Muscle Mechanography: A Novel Method to Measure Muscle Function in Older Adults. Res Gerontol Nurs 2017; 10:17-24. [DOI: 10.3928/19404921-20161209-03] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 10/11/2016] [Indexed: 12/23/2022]
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Verroken C, Zmierczak HG, Goemaere S, Kaufman JM, Lapauw B. Association of Jumping Mechanography-Derived Indices of Muscle Function with Tibial Cortical Bone Geometry. Calcif Tissue Int 2016; 98:446-55. [PMID: 26671019 DOI: 10.1007/s00223-015-0094-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 11/25/2015] [Indexed: 10/22/2022]
Abstract
Jumping mechanography has been developed to estimate maximum voluntary muscle forces. This study assessed associations of jumping mechanography-derived force and power measurements with tibial cortical bone geometry, compared to other estimates of muscle mass, size, and function. Healthy men (n = 181; 25-45 years) were recruited in a cross-sectional, population-based sibling-pair study. Muscle parameters include isokinetic peak torque of the quadriceps, DXA-derived leg lean mass, mechanography-derived peak jump force and power, and pQCT-derived mid-tibial (66 %) muscle cross-sectional area (CSA). Mid-tibial cortical bone parameters were assessed by pQCT. In age, height, and weight-adjusted analyses, jump force and power correlated positively with cortical bone area, cortical thickness, and polar strength-strain index (SSIp) (β = 0.23-0.34, p ≤ 0.001 for force; β = 0.25-0.30, p ≤ 0.007 for power) and inversely with endosteal circumference adjusted for periosteal circumference (ECPC) (β = -0.16, p < 0.001 for force; β = -0.13, p = 0.007 for power). Force but not power correlated with cortical over total bone area ratio (β = 0.25, p = 0.002). Whereas leg lean mass correlated with all cortical parameters except cortical over total bone area ratio (β = 0.25-0.62, p ≤ 0.004), muscle CSA only correlated with cortical bone area, periosteal circumference, and SSIp (β = 0.21-0.26, p ≤ 0.001), and quadriceps torque showed no significant correlations with the bone parameters. Multivariate models indicated that leg lean mass was independently associated with overall bone size and strength reflected by periosteal and endosteal circumference and SSIp (β = 0.32-0.55, p ≤ 0.004), whereas jump force was independently associated with cortical bone size reflected by ECPC, cortical thickness, and cortical over total bone area ratio (β = 0.13-0.28; p ≤ 0.002). These data indicate that jumping mechanography provides relevant information about the relationship of muscle with bone geometry.
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Affiliation(s)
- Charlotte Verroken
- Unit for Osteoporosis and Metabolic Bone Diseases, Department of Endocrinology, Ghent University Hospital, De Pintelaan 185, 9K12IE, 9000, Ghent, Belgium.
| | - Hans-Georg Zmierczak
- Unit for Osteoporosis and Metabolic Bone Diseases, Department of Endocrinology, Ghent University Hospital, De Pintelaan 185, 9K12IE, 9000, Ghent, Belgium
| | - Stefan Goemaere
- Unit for Osteoporosis and Metabolic Bone Diseases, Department of Endocrinology, Ghent University Hospital, De Pintelaan 185, 9K12IE, 9000, Ghent, Belgium
| | - Jean-Marc Kaufman
- Unit for Osteoporosis and Metabolic Bone Diseases, Department of Endocrinology, Ghent University Hospital, De Pintelaan 185, 9K12IE, 9000, Ghent, Belgium
| | - Bruno Lapauw
- Unit for Osteoporosis and Metabolic Bone Diseases, Department of Endocrinology, Ghent University Hospital, De Pintelaan 185, 9K12IE, 9000, Ghent, Belgium
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Veilleux LN, Pouliot-Laforte A, Lemay M, Cheung MS, Glorieux FH, Rauch F. The functional muscle-bone unit in patients with osteogenesis imperfecta type I. Bone 2015; 79:52-7. [PMID: 26004918 DOI: 10.1016/j.bone.2015.05.019] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Revised: 04/24/2015] [Accepted: 05/14/2015] [Indexed: 11/21/2022]
Abstract
CONTEXT Osteogenesis imperfecta (OI) type I is a heritable bone fragility disorder that is caused by mutations affecting collagen type I. We recently showed that patients with OI type I frequently have muscle weakness. As muscle force and bone mass are usually closely related, we hypothesized that muscle weakness in OI type I could contribute to increase bone mass deficit in the lower extremities. OBJECTIVE To assess the muscle-bone relationship in the lower extremities of children and adolescents with OI type I. SETTING The study was carried out in the outpatients department of a pediatric orthopedic hospital. Patients and other participants Thirty children and adolescents with OI type I (20 females; mean age [SD]: 11.2 years [3.9]) were compared with 30 healthy age- and sex-matched controls (mean age [SD]: 11.1 years [4.5]). MAIN OUTCOME MEASURES Tibia bone mineral content (BMC; mg/mm) was measured by peripheral quantitative computed tomography to estimate bone strength at the 4% and 14% sites. Lower extremity peak force (kN) was measured by mechanography using the multiple two-legged hopping test. RESULTS Compared with age- and sex-matched controls, patients with OI type I had 17% lower peak force (1.3 kN vs. 1.7 kN; p=0.002) as well as a 22% lower BMC (128 mg/mm vs. 165 mg/mm; p<0.001). Stepwise regression analysis showed that muscle force and tibia length were positively related to bone strength (r(2)=0.90, p<0.001) whereas there was no effect of the disease status (OI vs. control). CONCLUSIONS These results suggest that the muscle-bone relationship is similar between children and adolescents with OI type I and healthy age and sex-matched controls. It also suggests that muscle weakness may contribute to decreased bone strength in individuals with OI type I.
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Affiliation(s)
- Louis-Nicolas Veilleux
- Shriners Hospital for Children, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Department of Pediatrics, McGill University, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Centre de Réadaptation Marie-Enfant, Research Center, Hôpital Sainte-Justine, 5200 Bélanger Street East, Montréal, Québec H1T 1C9, Canada.
| | - Annie Pouliot-Laforte
- Shriners Hospital for Children, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Centre de Réadaptation Marie-Enfant, Research Center, Hôpital Sainte-Justine, 5200 Bélanger Street East, Montréal, Québec H1T 1C9, Canada; Département de Kinanthropologie, Université du Québec à Montréal, 141 Avenue du Président Kennedy Complexe des Sciences Pierre-Dansereau, Montréal, Québec H2X 1Y4, Canada
| | - Martin Lemay
- Centre de Réadaptation Marie-Enfant, Research Center, Hôpital Sainte-Justine, 5200 Bélanger Street East, Montréal, Québec H1T 1C9, Canada; Département de Kinanthropologie, Université du Québec à Montréal, 141 Avenue du Président Kennedy Complexe des Sciences Pierre-Dansereau, Montréal, Québec H2X 1Y4, Canada
| | - Moira S Cheung
- Shriners Hospital for Children, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Department of Pediatrics, McGill University, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada
| | - Francis H Glorieux
- Shriners Hospital for Children, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Department of Pediatrics, McGill University, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada
| | - Frank Rauch
- Shriners Hospital for Children, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Department of Pediatrics, McGill University, 1529 Cedar Avenue, Montréal, Québec H3G 1A6, Canada; Centre de Réadaptation Marie-Enfant, Research Center, Hôpital Sainte-Justine, 5200 Bélanger Street East, Montréal, Québec H1T 1C9, Canada
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Tolonen S, Sievänen H, Mikkilä V, Telama R, Oikonen M, Laaksonen M, Viikari J, Kähönen M, Raitakari OT. Adolescence physical activity is associated with higher tibial pQCT bone values in adulthood after 28-years of follow-up--the Cardiovascular Risk in Young Finns Study. Bone 2015; 75:77-83. [PMID: 25697084 DOI: 10.1016/j.bone.2015.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2014] [Revised: 01/30/2015] [Accepted: 02/09/2015] [Indexed: 11/16/2022]
Abstract
High peak bone mass and strong bone phenotype are known to be partly explained by physical activity during growth but there are few prospective studies on this topic. In this 28-year follow-up of Cardiovascular Risk in Young Finns Study cohort, we assessed whether habitual childhood and adolescence physical activity or inactivity at the age of 3-18 years were associated with adult phenotype of weight-bearing tibia and the risk of low-energy fractures. Baseline physical activity and data on clinical, nutritional and lifestyle factors were assessed separately for females and males aged 3-6-years (N=395-421) and 9-18-years (N=923-965). At the age of 31-46-years, the prevalence of low-energy fractures was assessed with a questionnaire and several tibial traits were measured with pQCT (bone mineral content (BMC; mg), total and cortical cross-sectional areas (mm(2)), trabecular (for the distal site only) and cortical (for the shaft only) bone densities (mg/cm(3)), stress-strain index (SSI; mm(3), for the shaft only), bone strength index (BSI; mg(2)/cm(4), for the distal site only) and the cortical strength index (CSI, for the shaft only)). For the statistical analysis, each bone trait was categorized as below the cohort median or the median and above and the adjusted odds ratios (OR) were determined. In females, frequent physical activity at the age of 9-18-years was associated with higher adulthood values of BSI, total and cortical areas, BMC, CSI and SSI at the tibia independently of many health and lifestyle factors (ORs 0.33-0.53, P≤0.05; P-values for trend 0.002-0.05). Cortical density at the tibial shaft showed the opposite trend (P-value for trend 0.03). Similarly in males, frequent physical activity was associated with higher values of adult total and cortical areas and CSI at the tibia (ORs 0.48-0.53, P≤0.05; P-values for trend 0.01-0.02). However, there was no evidence that childhood or adolescence physical activity was associated with lower risk of low energy fractures during the follow-up. In conclusion, frequent habitual physical activity in adolescence seems to confer benefits on tibial bone size and geometry in adulthood.
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Affiliation(s)
- S Tolonen
- Division of Nutrition, Department of Applied Chemistry and Microbiology, University of Helsinki, Helsinki, Finland; Vaasa Central Hospital, Vaasa, Finland.
| | - H Sievänen
- The UKK-institute for Health Promotion Research, Tampere, Finland
| | - V Mikkilä
- Division of Nutrition, Department of Applied Chemistry and Microbiology, University of Helsinki, Helsinki, Finland; Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - R Telama
- LIKES Research Center for Sport and Health Sciences, Jyväskylä, Finland
| | - M Oikonen
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland
| | - M Laaksonen
- Division of Nutrition, Department of Applied Chemistry and Microbiology, University of Helsinki, Helsinki, Finland
| | - J Viikari
- Department of Medicine, University of Turku and Division of Medicine, Turku University Hospital, Finland
| | - M Kähönen
- Department of Clinical Physiology, Tampere University Hospital and University of Tampere, Tampere, Finland
| | - O T Raitakari
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, Finland; Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, Finland
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Rantalainen T, Duckham RL, Suominen H, Heinonen A, Alén M, Korhonen MT. Tibial and fibular mid-shaft bone traits in young and older sprinters and non-athletic men. Calcif Tissue Int 2014; 95:132-40. [PMID: 24925060 DOI: 10.1007/s00223-014-9881-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 05/23/2014] [Indexed: 01/01/2023]
Abstract
High impact loading is known to prevent some of the age-related bone loss but its effects on the density distribution of cortical bone are relatively unknown. This study examined the effects of age and habitual sprinting on tibial and fibular mid-shaft bone traits (structural, cortical radial and polar bone mineral density distributions). Data from 67 habitual male sprinters aged 19-39 and 65-84 years, and 60 non-athletic men (referents) aged 21-39 and 65-80 years are reported. Tibial and fibular mid-shaft bone traits (strength strain index SSI, cortical density CoD, and polar and radial cortical density distributions) were assessed with peripheral quantitative computed tomography. Analysis of covariance (ANCOVA) adjusted for height and body mass indicated that the sprinters had 21 % greater tibial SSI (P < 0.001) compared to the referents, with no group × age-group interaction (P = 0.54). At the fibula no group difference or group × age-group interaction was identified (P = 0.12-0.81). For tibial radial density distribution ANCOVA indicated no group × radial division (P = 0.50) or group × age-group × division interaction (P = 0.63), whereas an age × radial division interaction was observed (P < 0.001). For polar density distribution, no age-group × polar sector (P = 0.21), group × polar sector (P = 0.46), or group × age-group × polar sector interactions were detected (P = 0.15). Habitual sprint training appears to maintain tibial bone strength, but not radial cortical density distribution into older age. Fibular bone strength appeared unaffected by habitual sprinting.
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Affiliation(s)
- Timo Rantalainen
- Department of Health Sciences, University of Jyväskylä, Jyväskylä, Finland,
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Mosti MP, Kaehler N, Stunes AK, Hoff J, Syversen U. Maximal strength training in postmenopausal women with osteoporosis or osteopenia. J Strength Cond Res 2014; 27:2879-86. [PMID: 23287836 DOI: 10.1519/jsc.0b013e318280d4e2] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Current guidelines recommend weight-bearing activities, preferably strength training for improving skeletal health in patients with osteoporosis. What type of strength training that is most beneficial for these patients is not established. Maximal strength training (MST) is known to improve 1-repetition maximum (1RM) and rate of force development (RFD), which are considered as important covariables for skeletal health. Squat exercise MST might serve as an effective intervention for patients with low bone mass. We hypothesized that 12 weeks of squat exercise MST would improve 1RM and RFD in postmenopausal women with osteoporosis or osteopenia and that these changes would coincide with improved bone mineral density (BMD) and bone mineral content (BMC), and serum markers of bone metabolism. The participants were randomized to a training group (TG, n = 10) or control group (CG, n = 11). The TG underwent 12 weeks of supervised squat exercise MST, 3 times a week, with emphasis on rapid initiation of the concentric part of the movement. The CG was encouraged to follow current exercise guidelines. Measurements included 1RM, RFD, BMD, BMC, and serum bone metabolism markers; type 1 collagen amino-terminal propeptide (P1NP) and type 1 collagen C breakdown products (CTX). At posttest, 8 participants remained in each group for statistical analyses. The TG improved the 1RM and RFD by 154 and 52%, respectively. Lumbar spine and femoral neck BMC increased by 2.9 and 4.9%. The ratio of serum P1NP/CTX tended to increase (p = 0.09), indicating stimulation of bone formation. In conclusion, squat exercise MST improved 1RM, RFD, and skeletal properties in postmenopausal women with osteopenia or osteoporosis. The MST can be implemented as a simple and effective training method for patients with reduced bone mass.
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Affiliation(s)
- Mats P Mosti
- Departments of 1Cancer Research and Molecular Medicine and 2Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway Departments of 3Physical Medicine and Rehabilitation 4Endocrinology, St Olav's University Hospital HF, Trondheim, Norway
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11
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Hardcastle SA, Gregson CL, Rittweger J, Crabtree N, Ward K, Tobias JH. Jump power and force have distinct associations with cortical bone parameters: findings from a population enriched by individuals with high bone mass. J Clin Endocrinol Metab 2014; 99:266-75. [PMID: 24203064 PMCID: PMC3952022 DOI: 10.1210/jc.2013-2837] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CONTEXT Little is known of the relationships between muscle function and bone, based on the recently developed technique of jumping mechanography. OBJECTIVE Our objective was to determine associations between peak ground reaction force and peak power during a 1-legged hopping test and a single 2-legged jump, respectively, and cortical bone parameters. DESIGN AND SETTING This was a cross-sectional observational study in participants from the high bone mass cohort. PARTICIPANTS Participants included 70 males (mean age 58 years) and 119 females (mean age 56 years); high bone mass cases and controls were pooled. MAIN OUTCOME MEASURES Total hip bone mineral density (BMD) (measured by dual-energy x-ray absorptiometry scanning) and mid-tibial peripheral quantitative computed tomography (Stratec XCT2000L). RESULTS Jump power was positively related to hip BMD (standardized β [95% confidence interval]=0.29 [0.07, 0.51], P=.01), but hopping force was not (0.03 [-0.16, 0.22], P=.74) (linear regression analysis adjusted for age, gender, height, and weight). In 113 participants with force and peripheral quantitative computed tomography data, both jump power and hopping force were positively associated with tibial strength strain index (0.26 [0.09, 0.44], P<.01; and 0.24 [0.07, 0.42], P=.01 respectively). Although hopping force was positively associated with bone size (total bone area 0.22 [0.03, 0.42], P=.02), jump power was not (0.10 [-0.10, 0.30], P=.33). In contrast, jump power was inversely associated with endocortical circumference adjusted for periosteal circumference (-0.24 [-0.40, -0.08], P<.01) whereas no association was seen for hopping force (-0.10 [-0.26, 0.07], P=.24). CONCLUSIONS Although power and force are both positively associated with cortical bone strength, distinct mechanisms appear to be involved because power was primarily associated with reduced endocortical expansion (reflected by endocortical circumference adjusted for periosteal circumference, and hip BMD), whereas force was associated with increased periosteal expansion (reflected by total bone area).
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Affiliation(s)
- Sarah A Hardcastle
- Musculoskeletal Research Unit (S.A.H., C.L.G., J.H.T.), School of Clinical Sciences, University of Bristol, Bristol BS10 5NB, United Kingdom; Institute of Aerospace Medicine (J.R.), German Aerospace Center, D-51147 Cologne, Germany; Institute for Biomedical Research into Human Movement and Health Research Institute (J.R.), Manchester Metropolitan University, Manchester M1 5GD, United Kingdom; Birmingham Children's Hospital (N.C.), Birmingham B4 6NH, United Kingdom; and Nutrition and Bone Health, Medical Research Council Human Nutrition Research, Cambridge CB1 9NL, United Kingdom
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Veilleux LN, Cheung MS, Glorieux FH, Rauch F. The muscle-bone relationship in X-linked hypophosphatemic rickets. J Clin Endocrinol Metab 2013; 98:E990-5. [PMID: 23526465 DOI: 10.1210/jc.2012-4146] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
CONTEXT We recently found that patients with X-linked hypophosphatemic rickets (XLH) have a muscle function deficit in the lower extremities. As muscle force and bone mass are usually closely related, we hypothesized that patients with XLH could also have a bone mass deficit in the lower extremities. OBJECTIVE The study objective was to assess the muscle-bone relationship in the lower extremities of patients with XLH. SETTING The study was carried out in the outpatients department of a pediatric orthopedic hospital. PATIENTS AND OTHER PARTICIPANTS Thirty individuals with XLH (6 to 60 y; 9 male patients) and 30 age- and gender-matched controls participated. MAIN OUTCOME MEASURES Calf muscle size and density as well as tibia bone mass and geometry were assessed by peripheral quantitative computed tomography. Muscle function was evaluated as peak force in the multiple 2-legged hopping test. RESULTS Muscle force was significantly lower in XLH patients than in controls but muscle cross-sectional area did not differ (after adjustment for tibia length). External bone size, expressed as total bone cross-sectional area, was higher in the XLH group than in controls. The XLH cohort also had statistically significantly higher bone mineral content. CONCLUSIONS Patients with XLH have increased bone mass and size at the distal tibia despite muscle function deficits.
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Affiliation(s)
- Louis-Nicolas Veilleux
- Shriners Hospital for Children and Department of Pediatrics, McGill University, Montréal, Québec, Canada.
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Edouard T, Deal C, Van Vliet G, Gaulin N, Moreau A, Rauch F, Alos N. Muscle-bone characteristics in children with Prader-Willi syndrome. J Clin Endocrinol Metab 2012; 97:E275-81. [PMID: 22162467 DOI: 10.1210/jc.2011-2406] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND A decrease in muscle mass, low motor performance, and normal lumbar spine bone mineral density (BMD) have been reported in children with Prader-Willi syndrome (PWS). However, these data are limited by the fact that PWS children (who have short stature) were compared to age-matched healthy or obese individuals of normal height. OBJECTIVE The goal of the present study was to compare bone and muscle characteristics in PWS children to sex- and age- or height-matched healthy subjects. MATERIALS AND METHODS The study population included 17 PWS children (ages 6.2 to 17.5 yr; nine girls) who were not treated with GH. The axial skeleton was analyzed at the lumbar spine using dual-energy x-ray absorptiometry, and the appendicular skeleton (radius and tibia) was evaluated using peripheral quantitative computed tomography. Muscle parameters (mass, size, and functional parameters) were measured by dual-energy x-ray absorptiometry, peripheral quantitative computed tomography, and jumping mechanography, respectively. RESULTS Compared to height-matched controls, PWS patients had normal axial and appendicular BMD, as well as normal muscle size. Compared to age- or height-matched controls of normal weight, PWS patients had lower maximal muscle force and power relative to body mass during jumping. PWS patients had similar absolute maximal muscle force but lower absolute maximal power compared to age- or height-matched controls. Relationships between bone mass and muscle size and force were similar in PWS patients and in healthy subjects. CONCLUSION Relative to their height, PWS patients not treated with GH had normal axial and appendicular BMD, muscle size, and muscle-bone relationships.
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Affiliation(s)
- Thomas Edouard
- Endocrinology Service, Department of Pediatrics, Sainte-Justine University Hospital, and Université de Montréal, Montreal, Quebec, Canada.
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Tolonen S, Mikkilä V, Laaksonen M, Sievänen H, Mononen N, Hernesniemi J, Vehkalahti K, Viikari J, Raitakari O, Kähönen M, Lehtimäki T. Association of apolipoprotein E promoter polymorphisms with bone structural traits is modified by dietary saturated fat intake - the Cardiovascular Risk in Young Finns study. Bone 2011; 48:1058-65. [PMID: 21266206 DOI: 10.1016/j.bone.2011.01.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2010] [Revised: 12/03/2010] [Accepted: 01/14/2011] [Indexed: 10/18/2022]
Abstract
Association of apolipoprotein E (APOE) ε4 allele with peripheral quantitative computed tomography (pQCT) bone traits at the distal and shaft sites of the radius and tibia was evaluated in the Young Finns Cohort (n=1777). We also analyzed the interactions of the APOE promoter polymorphisms (-219G/T rs405509 and +113G/C rs440446) and bone traits within the APOE ε3/ε3 genotype (n=1025 and n=1013, respectively), and investigated the gene-environment interactions on bone traits with longitudinal saturated fatty acids (SAFA) intake. Differences between the ε4 allele carriers and noncarriers were modest and mostly nonsignificant. Within the APOE promoter -219G/T polymorphism, cortical strength index (CSI) and compressive bone strength index (BSI) at the distal radius (linear, P=0.003 and P=0.05, respectively) and tibia (linear, P=0.01 and P=0.03, respectively), and CSI at the tibial shaft (linear, P=0.04) decreased towards the -219T/T genotype in women. In men, total cross-sectional areas at the radial site and stress-strain index (SSI) at the radial shaft (linear, P=0.03 and P=0.04 and P=0.05, respectively) increased, and conversely cortical bone density and CSI at the radial shaft (linear, P=0.005 and P=0.05, respectively) and CSI at the tibial shaft (linear, P=0.03) decreased towards the -219T/T genotype. In the highest SAFA tertile, women with the -219T/T genotype had the smallest total area and SSI at the radial shaft (P=0.01 and P=0.02, respectively). Subjects with the APOE +113C/C genotype shared similar bone traits as subjects with the APOE -219T/T genotype. In conclusion, APOE genotypes -219T/T and +113C/C could be genetic markers for cortical bone strength. Furthermore, high longitudinal SAFA intake seems to be more detrimental to bone in women with the -219T/T and +133C/C genotypes than others.
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Affiliation(s)
- Sanna Tolonen
- Department of Food and Environmental Sciences, University of Helsinki, Finland
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Rantalainen T, Hoffrén M, Linnamo V, Heinonen A, Komi PV, Avela J, Nindl BC. Three-month bilateral hopping intervention is ineffective in initiating bone biomarker response in healthy elderly men. Eur J Appl Physiol 2011; 111:2155-62. [DOI: 10.1007/s00421-011-1849-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2010] [Accepted: 01/20/2011] [Indexed: 11/29/2022]
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Tolonen S, Laaksonen M, Mikkilä V, Sievänen H, Mononen N, Räsänen L, Viikari J, Raitakari OT, Kähönen M, Lehtimäki TJ. Lactase gene c/t(-13910) polymorphism, calcium intake, and pQCT bone traits in Finnish adults. Calcif Tissue Int 2011; 88:153-61. [PMID: 21136048 DOI: 10.1007/s00223-010-9440-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2010] [Accepted: 10/31/2010] [Indexed: 01/24/2023]
Abstract
Genetic lactase nonpersistence may influence calcium intake and thereby bone health. We investigated in the Cardiovascular Risk in Young Finn Study whether young adults aged 31-46 years with the C/C(-13910) genotype are more susceptible to reduced bone phenotypes, low-energy fractures, and low calcium intake than subjects with other lactase genotypes. We also analyzed the gene-environment interactions on bone with calcium intake and physical activity. Peripheral quantitative computed tomography bone traits were measured from the distal and shaft sites of the radius and tibia. The total number of those subjects whose nondominant forearm was measured and the lactase genotype was defined was 1551. Information on diet, lifestyle factors, and fractures was collected with questionnaires. The mean intake of calcium was the lowest in men with the C/C(-13910) genotype (P = 0.001). Men with the T/T(-13910) genotype had ~3% higher trabecular density at the distal radius and distal tibia compared to other lactase genotypes (P = 0.03 and 0.02, respectively). In women, we found no evidence of the gene effect at the radius and tibia. No major interactions of the C/T(-13910) polymorphism with calcium intake or physical activity on bone phenotypes were found in either sex. In conclusion, the C/T(-13910) polymorphism was associated with trabecular density at the distal radius and tibia in men. These differences may be due to the differences in calcium intake between the lactase genotypes.
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Affiliation(s)
- Sanna Tolonen
- Division of Nutrition, Department of Food and Environmental Sciences, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland.
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Rantalainen T, Nikander R, Heinonen A, Multanen J, Häkkinen A, Jämsä T, Kiviranta I, Linnamo V, Komi PV, Sievänen H. Neuromuscular performance and body mass as indices of bone loading in premenopausal and postmenopausal women. Bone 2010; 46:964-9. [PMID: 20064632 DOI: 10.1016/j.bone.2010.01.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2009] [Revised: 12/22/2009] [Accepted: 01/05/2010] [Indexed: 12/31/2022]
Abstract
The strong association between body mass and skeletal robusticity has been attributed to increasing skeletal loading with increasing mass. However, it is unclear whether body mass is merely a coarse substitute for bone loading rather than a true independent predictor of bone strength. As indices of neuromuscular performance, impulse and peak power were determined from vertical ground reaction force during a maximal counter movement jump test in 221 premenopausal and 82 postmenopausal women. Bone compressive (BSI(d) g(2)/cm(4)) and bending (SSImax(mid) mm(3)) strength indices were measured with peripheral quantitative computed tomography (pQCT) at the distal ((d)) and midshaft ((mid)) sites of the tibia. A two-step forced regression model for predicting bone strength indices was constructed. Age, height and body mass were entered first, followed by impulse as an indicator of skeletal loading. The basic model explained 14% (P<0.001) of the variance in BSI(d) in the premenopausal group and 16% (P=0.004) in the postmenopausal group, and 32% (P<0.001) and 25% (P<0.001) of the variance in SSImax(nud) respectively. Entering impulse into the model increased the explanatory power by 9% (P<0.001) and 7% (P<0.001) for BSI(d) and by 8% (P<0.001) and 12% (P<0.001) for SSImax(mid). Furthermore, impulse replaced body mass as an independent significant factor explaining the variance in bone strength. These results indicate that neuromuscular performance should be measured and preferred over body mass in models predicting skeletal robusticity.
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Affiliation(s)
- Timo Rantalainen
- Department of Biology of Physical Activity, University of Jyväskylä, Finland.
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