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Association Between Sarcopenia and Frailty Transition in Chinese Older Adults: A Multistate Markov Model Study
Xiaocan Jia1, Ruike Lin1, Nana Wang1
1Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China.
Journal of the American Medical Directors Association
|March 13, 2026
Summary
Sarcopenia, a condition of muscle loss, is linked to the worsening of frailty in older Chinese adults. Early screening for sarcopenia can help promote healthy aging.
Area of Science:
- Gerontology
- Geriatric Medicine
- Public Health
Background:
- Sarcopenia and frailty are common geriatric syndromes.
- The dynamic relationship between sarcopenia and frailty progression is not well understood.
Purpose of the Study:
- To investigate the association between sarcopenia and multistate frailty transitions in Chinese older adults.
Main Methods:
- A longitudinal study using 4 waves (2011-2018) of the China Health and Retirement Longitudinal Study (CHARLS).
- Included 4621 adults aged ≥60 years.
- Frailty was assessed using a 35-item frailty index, and sarcopenia was defined by Asian Working Group for Sarcopenia 2019 (AWGS 2019) criteria.
- A multistate Markov model analyzed transition intensities and probabilities, with hazard ratios (HRs) quantifying associations.
Main Results:
- Prevalence of prefrailty was high, with significant transitions between frailty states over 7 years.
- Confirmed sarcopenia increased the risk of transitioning from robust to prefrailty (HR=1.29) and from prefrailty to frailty (HR=1.20) compared to nonsarcopenia.
- Low muscle strength was most strongly associated with frailty deterioration, followed by low physical performance.
Conclusions:
- Sarcopenia is associated with frailty progression in Chinese older adults.
- These findings highlight sarcopenia as a key factor in frailty development.
- Supports early screening and interventions for sarcopenia to promote healthy aging.
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