WANG Shiqiang1,2,3，GUO Kailin2，LI Dan2,3*，WANG Yijie2，WANG Shaokun2，XU Zhihan2,LYU Wangang1*
（1 Hubei Key Laboratory of Exercise Training and Monitoring，Wuhan Sports University, Wuhan 430079， Hubei， China;2 College of Physical Education， Hunan University of Technology，Zhuzhou 412007， Hunan, China;3 Hunan Provincial Key Laboratory of Physical Health and Sports Fitness，Zhuzhou 412007， Hunan, China）
Abstract:
Based on the China health and retirement longitudinal study（CHARLS） data, the frailty index (FI) is used to assess the frailty of the elderly in China. The Logistic regression is used to analyze the influence of physical activity on weakness, supplemented by propensity score matching method for robustness test.The results show that the frailty rate of the elderly in China has increased.Among the elderly without frailty, 26.0% of the elderly changed into frailty, while 19.89% of the elderly with frailty improved into non-frailty.The proportion of women from non frailty state to frailty state is higher than that of men. The proportion of low level physical activity among the frail elderly increased.The risk of changed from non-frailty state to frailty state is 2.59 times that of the moderate to vigor level elderly, and the possibility of improving the frailty state to non-frailty state is reduced by 62%. The results demonstrate that the low level physical activity is a risk factor in the transformation of the elderly from a non-frailty state to a frailty state, while moderate to vigor level physical activity is conducive to the transformation of the frailty state to a non-frailty state.
KeyWords:
elderly; physical activity; tracking research; frailty index; CHARLS
