Related Experiment Video
Updated: May 23, 2026
Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
Low-Intensity Physical Activity and Sarcopenia Risk in Aging Populations: A Nationally Representative Study From
Jiaxuan Chen1, Fujue Ji1,2,3, Lei Yang1
1Department of Physical Education, College of Performing Arts and Sport, Hanyang University, Seoul, Republic of Korea.
Background:
Sarcopenia is a major health concern in aging populations, particularly in China, which faces the world's largest demographic shift toward older age. Physical activity (PA) is a modifiable factor for sarcopenia prevention, but the role of activity intensity and dose remains uncertain. Evidence from Chinese cohorts is especially scarce.
Methods:
We analyzed data from 6018 adults in the China Health and Retirement Longitudinal Study. Sarcopenia was defined using the 2019 Asian Working Group for Sarcopenia criteria. PA was self-reported and categorized into high- (HPA), moderate- (MPA), and low-intensity (LPA), as well as total PA. Logistic regression models estimated odds ratios for sarcopenia, and Cox regression assessed associations with 10-year all-cause mortality. Subgroup, sensitivity, and dose-response analyses were performed.
Results:
At baseline, 19.0% of participants had sarcopenia. In unadjusted models, meeting total PA guidelines and engaging in LPA were associated with lower odds of sarcopenia. However, after full adjustment, these associations attenuated, while HPA was linked to higher sarcopenia risk. Dose-response analysis showed that 150-299 min of weekly LPA reduced sarcopenia risk by 51%. Long-term survival analysis indicated that ≥ 300 min of weekly PA significantly reduced 10-year mortality, even among individuals with sarcopenia.
Conclusion:
This study provides the first nationally representative evidence from China on the relationship between PA and sarcopenia. Findings emphasize that both PA volume and intensity composition matter, with moderate weekly PA dominated by LPA offering the greatest protection. Promoting feasible, sustainable activity should be prioritized in sarcopenia prevention strategies for older adults.
Related Concept Videos
01:19The Effect of Aging on Tissues
01:29Bone Disorders
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
01:27Pharmacodynamics in Geriatric Patients: Effects of Age
01:00Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution
01:09Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...