Relationship between Physical Activity and Sedentary Time Trajectory and All-cause Mortality in Chinese Adults
10.11783/j.issn.1002-3674.2025.01.006
- VernacularTitle:中国成年人体力活动和久坐时间轨迹与全因死亡率关系的研究
- Author:
Suixia CAO
1
;
Yating HUO
;
Jingchun LIU
Author Information
1. 西安交通大学第一附属医院神经内科(710061);西安交通大学医学部公共卫生学院
- Publication Type:Journal Article
- Keywords:
Physical activity;
Sedentary time;
Trajectory;
All-cause mortality
- From:
Chinese Journal of Health Statistics
2025;42(1):33-37
- CountryChina
- Language:Chinese
-
Abstract:
Objective It has been proved that physical activity and sedentary behavior are closely related to health status.However,individual physical activity levels and sedentary time are not constant over the course of life and often change with age.The aim of this study was to identify the physical activity(PA)and sedentary time(ST)trajectory and explore the association with all-cause mortality in Chinese adults.Methods The data from the China Health and Nutrition Survey from 2004 to 2015 were used to identify the trajectory patterns of physical activity and sedentary time over the course of life by using the deleted normal model in the multivariate baseline trajectory model,and the association between the grouping of physical activity and sedentary time trajectory and the risk of all-cause mortality was evaluated by the multivariate COX proportional hazard regression model.Results A total of 10576 participants with two or more rounds of complete follow-up data were included in the analysis.Four physical activity and sedentary time trajectories were identified.34.9％showed that PA level decreased and ST maintained a moderate level.The rest were low PA low ST(13.5％),high PA high ST(32.8％)and high PA high ST(13.8％).People with high ST in medium PA(HR=0.54,95％CI:0.37～0.78,P=0.001)and people with high ST in high PA(HR=0.27,95％CI:0.11～0.65,P=0.002)the risk of death was significantly lower than those with low PA and low ST,and there was no significant difference in the risk of death in the ST group with reduced PA(HR=0.82,95％CI:0.59～1.16,P=0.257).Conclusion This study identified four PA and ST tracks in Chinese adults,and emphasized the importance of long-term maintenance of high PA levels in reducing mortality risk.
