Associations between novel jump test measures, grip strength, and physical performance: the Osteoporotic Fractures in Men (MrOS) Study
| Autor: | Peggy M. Cawthon, Howard A Fink, Sara R. Piva, Paolo Caserotti, Robert M. Boudreau, Elsa S. Strotmeyer, Deborah M. Kado, Tamara B. Harris, Jane A. Cauley, E. Barrett-Connor, Mary E. Winger |
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| Rok vydání: | 2019 |
| Předmět: |
Male
Aging medicine.medical_specialty Epidemiology Countermovement Body weight Risk Assessment Article Healthy Aging 03 medical and health sciences Grip strength 0302 clinical medicine Linear regression medicine Humans 030212 general & internal medicine Longitudinal Studies Mathematics Aged 80 and over Hand Strength Physical Functional Performance Gait speed Walking Speed Lower Extremity Muscle power Physical performance Power Jump Physical therapy Physical function Muscle Geriatrics and Gerontology 030217 neurology & neurosurgery Jump test Osteoporotic Fractures |
| Zdroj: | Aging Clin Exp Res Winger, M E, Caserotti, P, Cauley, J A, Boudreau, R M, Piva, S R, Cawthon, P M, Harris, T B, Barrett-Connor, E, Fink, H A, Kado, D M, Strotmeyer, E S & Osteoporotic Fractures in Men (MrOS) Study Group 2020, ' Associations between novel jump test measures, grip strength, and physical performance : the Osteoporotic Fractures in Men (MrOS) Study ', Aging Clinical and Experimental Research, vol. 32, no. 4, pp. 587-595 . https://doi.org/10.1007/s40520-019-01421-1 |
| ISSN: | 1720-8319 |
| Popis: | Background/aims: Weight-bearing jump tests measure lower extremity muscle power, velocity, and force, and may be more strongly related to physical performance than grip strength. However, these relationships are not well described in older adults. Methods: Participants were 1242 older men (mean age 84 ± 4 years) in the Osteoporotic Fractures in Men (MrOS) Study. Jump peak power (Watts/kg body weight), force (Newton/kg body weight) at peak power, and velocity (m/s) at peak power were measured by jump tests on a force plate. Grip strength (kg/kg body weight) was assessed by hand-held dynamometry. Physical performance included 400 m walk time (s), 6 m usual gait speed (m/s), and 5-repeated chair stands speed (#/s). Results: In adjusted Pearson correlations, power/kg and velocity moderately correlated with all performance measures (range r = 0.41–0.51; all p < 0.001), while correlations for force/kg and grip strength/kg were weaker (range r = 0.20–0.33; all p < 0.001). Grip strength/kg moderately correlated with power/kg (r = 0.44; p < 0.001) but not velocity or force/kg. In adjusted linear regression with standardized βs, 1 SD lower power/kg was associated with worse: 400 m walk time (β = 0.47), gait speed (β = 0.42), and chair stands speed (β = 0.43) (all p < 0.05). Associations with velocity were similar (400 m walk time: β = 0.42; gait speed: β = 0.38; chair stands speed: β = 0.37; all p < 0.05). Force/kg and grip strength/kg were more weakly associated with performance (range β = 0.18–0.28; all p < 0.05). Conclusions/discussion: Jump power and velocity had stronger associations with physical performance than jump force or grip strength. This suggests lower extremity power and velocity may be more strongly related to physical performance than lower extremity force or upper extremity strength in older men. |
| Databáze: | OpenAIRE |
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