中老年人体力活动水平与认知功能的双向因果关系研究

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中图分类号：G806 文献标志码：A 文章编号：1006-7116（2025）04-0137-07

Research on the bidirectional causal relationship between physical activity level and cognitive function in middle-aged and elderly people

LI Yuzhou，LI Luyi，WANGRui （School of Physical Education，Henan Normal University，Xinxiang 4530o7，China）

Abstract：A significantcorelation between physical activityand cognitive function inmiddle-agedandelderly people，but the underlying causal relationship still needs further clarification.This study extracts the data from ChinaHealthandRetirement Longitudinal Study（CHARLS）2015，2018and 2020，and the fixed effectsand cross-lagged regression analysis are alsoused to explore the reciprocal relationship between physical activity and cognitive function.Theresultsshowed that aftercontroling forcognitive function at the time points of 2015 （T1） and 2018 （T2）， high physical activity level at T1 significantly predicted cognitive function at T2，and high physical activity levelatT2 significantly predicted cognitivefunction at the time point of 2O20 （T3）.Conversely，after controlling for physicalactivity levelatT1andT2，cognitive functionatT1 significantlypredicted high physical activitylevelatT2，andcognitive functionatT2 significantlypredicted high physicalactivitylevelatT3.The study concluded that there is asignificant positive corelationand bidirectional causal relationship between high physical activity level andcognitive function inmiddle-aged and elderly people.High physical activity level havea significant predictiveeectoncognitive function inearly stages，whilecognitive functionalso hasasignificant impact on high physical activity level in later stages. These results will be of great significance for formulating effective public health policies and promoting individual health.

Keywords： physical activity level；cognitive function;bidirectional causality；middle-aged and elderly people

认知功能（cognitive function，CF）随年龄增长的自然衰退已成为全球面临的重大公共卫生问题。（剩余14413字）