The influence of physical activity on the degenerative changes in muscle strength of the upper and lower limbs in elderly individuals

LU Gang; TAN Meitao; MA Jinxiang

doi:10.16462/j.cnki.zhjbkz.2024.07.003

Volume 28 Issue 7

Jul. 2024

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LU Gang, TAN Meitao, MA Jinxiang. The influence of physical activity on the degenerative changes in muscle strength of the upper and lower limbs in elderly individuals[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2024, 28(7): 759-763. doi: 10.16462/j.cnki.zhjbkz.2024.07.003

Citation:

LU Gang, TAN Meitao, MA Jinxiang. The influence of physical activity on the degenerative changes in muscle strength of the upper and lower limbs in elderly individuals[J]. CHINESE JOURNAL OF DISEASE CONTROL & PREVENTION, 2024, 28(7): 759-763. doi: 10.16462/j.cnki.zhjbkz.2024.07.003

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The influence of physical activity on the degenerative changes in muscle strength of the upper and lower limbs in elderly individuals

doi: 10.16462/j.cnki.zhjbkz.2024.07.003

Department of Epidemiology and Health Statistics, School of Public Health, Guangzhou Medical University, Guangzhou 511436, China

Funds:

The National Social Science Foundation of China 18BRK034

More Information

Corresponding author: MA Jinxiang，E-mail：mjx777108@gzhmu.edu.cn
Received Date: 2023-08-17
Rev Recd Date: 2024-04-19

Available Online: 2024-08-19

Publish Date: 2024-07-10

Abstract

Abstract

Objective This study seeks to investigate the impact of physical activity on degenerative changes in the upper and lower limbs of older adults. Methods Based on the China health and retirement longitudinal study (CHARLS) 2015 dataset. The upper and lower limb muscle strength and physical activity were measured in older adults with grip strength, sit-to-stand test, and international physical activity questionnaire (IPAQ). The multivariate linear regression analyses are used to explore the mediating and moderating effects of physical activity on degenerative changes in muscle strength. Results A total of 2 808 individuals aged 60 years and above were included in this study, 1 446 (51.50%) were males and 1 362 (48.50%) were females. A total of 658 individuals (23.43%) were identified as having insufficient physical activity. Physical activity attenuated the degenerative changes in upper and lower limb muscle strength, playing a partially mediating role, with mediating effects accounting for 4.55% (95% CI: 2.31%-7.00%, P＜0.001), and 6.90% (95% CI: 4.48%-10.00%, P ＜ 0.001) of the effect, respectively. Physical activity failed to moderate degenerative changes in upper limb muscle strength (age×physical activity: β=0.421, P > 0.05) but moderated degenerative changes in lower limb muscle strength (age×physical activity: β=-0.375, P ＜ 0.01). Conclusions Physical activity partially mediates age-induced degenerative changes in upper and lower limb muscle strength and high levels of physical activity mitigate the process of degenerative changes in lower limb muscle strength.
- Elderly people,
- Physical activity,
- Muscle strength,
- Mediating effect,
- Moderating effect

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References(26)

References

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