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客观体力活动和久坐行为对城市老年人认知能力的影响

Effects of objective physical activity and sedentary behavior on cognitive ability of urban elderly

Study on China Physical Science / 2021,3(3): 319-329 / 2021-08-19 467 569

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• Authors: 韩涵     
• Information:

  江苏警官学院，南京

• Keywords: The elderly; Physical activity; Cognitive ability; Sedentary behavior 老年人；体力活动；认知能力；久坐行为
• Abstract: Objective: Urbanization and aging are global phenomena that faceunique challenges in different countries. It has become a hot topic to delay the decline of cognitive ability in the elderly, and physical activity plays an important role in it. To compensate for the limitations of self-reported physical activity, the present study used objective measures of physical activity to explore the relationship between physical activity and sedentary behavior and cognitive ability in older adults. METHODS: A cross-sectional survey was conducted among 512 elderly people in Nanjing. Actigraph GT3X+ was used to measure physical activity and sedentary behavior, and Montreal Cognitive Assessment was used to evaluate the Cognitive ability of the elderly. Linear regression model was used to investigate the dose-response relationship between physical activity, sedentary behavior and cognitive ability in the elderly. Results: In the population participant model, after adjusting for age, BMI, highest education, and monthly mean income, physical activity in older adults (β=0.006, p<0.01) had a significant linear relationship with cognitive ability; Sedentary time was not significantly associated with cognitive performance. Conclusion: Physical activity can significantly improve the cognitive ability of the elderly, while sedentary behavior has a weak effect on cognitive function. 目的：城市化和老龄化是全球现象，在不同国家都面临着独特的挑战。延缓老年人认知能力的衰退成为研究热点问题，而体力活动在其中发挥重要作用。为了弥补自我报告体力活动的局限性，本研究采用客观测量的体力活动，探索体力活动和久坐行为与老年人认知能力之间的关系。方法：对南京市512 名老年人进行横断面调查，使用ActiGraph GT3X+ 测量体力活动与久坐行为，使用Montreal Cognitive Assessment 评价老年人认知能力。采用线性回归模型，探讨体力活动、久坐行为与老年人认知能力的剂量效应关系。结果：总体参与者模型，经年龄、BMI、最高学历、月平均收入调整后发现，老年人体力活动（β=0.006，p<0.01）与认知能力有显著的线性关系；而久坐时间与认知能力无显著关系。结论：体力活动能显著改善老年人的认知能力，久坐行为对认知功能影响微弱。
• DOI: https://doi.org/10.35534/scps.0303026
• Cite: 韩涵．客观体力活动和久坐行为对城市老年人认知能力的影响［J］．中国体育研究，2021，3（3）：319-329．