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The association between physical activity intensity and frailty risk among older adults across different age groups and genders: Evidence from four waves of the China Health and Retirement Longitudinal Survey
- Di Ma,
- Yulin Sun,
- Guoyang Chen,
- Siwei Hao,
- Zhenping Jiang,
- Rui Wang,
- Shuaipeng Hao
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- Published: June 11, 2024
- https://doi.org/10.1371/journal.pone.0305346