MADEN-WILKINSON, Tom, MCPHEE, Jamie S, JONES, David A and DEGENS, Hans (2015). Age-related loss of muscle mass, strength, and power and their association with mobility in recreationally-active older adults in the United Kingdom. Journal of aging and physical activity, 23 (3), 352-360.
Full text not available from this repository.Abstract
To investigate reasons for the age-related reduction in physical function, we determined the relationships between muscle size, strength, and power with 6-min walk distance (6MWD) and timed up-and-go performance in 49 young (23 ± 3.1 years) and 66 healthy, mobile older adults (72 ± 5 years). While muscle mass, determined by DXA and MRI, did not correlate with performance in the older adults, power per body mass, determined from a countermovement jump, did correlate. The 40% lower jumping power observed in older adults (p < .05) was due to a lower take-off velocity, which explained 34% and 42% of the variance in 6MWD in older women and men, respectively (p < .01). The lower velocity was partly attributable to the higher body mass to maximal force ratio, but most was due to a lower intrinsic muscle speed. While changes in muscle function explain part of the age-related reduction in functional performance, ~60% of the deficit remains to be explained.
Item Type: | Article |
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Research Institute, Centre or Group - Does NOT include content added after October 2018: | Centre for Sport and Exercise Science |
Identification Number: | https://doi.org/10.1123/japa.2013-0219 |
Page Range: | 352-360 |
Depositing User: | Tom Maden-Wilkinson |
Date Deposited: | 10 Jan 2018 13:22 |
Last Modified: | 18 Mar 2021 16:31 |
URI: | https://shura.shu.ac.uk/id/eprint/17528 |
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