Mass Sports Research Center, China Institute of Sport Science, Beijing, China.
Department of Sport and Physical Education, Faculty of Social Sciences, Hong Kong Baptist University, Hong Kong, China.
Health Place. 2018 Nov;54:37-42. doi: 10.1016/j.healthplace.2018.09.004. Epub 2018 Sep 18.
This study examined whether physical activity (PA) mediated the relationships of four PA-related environmental settings (home, school, neighborhood environments and convenient facilities) with body mass index (BMI) among Chinese adolescents aged 13-18 years. Two setting indicators were assessed: (1) perceived availability of environmental resources and (2) perceived importance of environmental resources. Mediation analysis indicated that PA mediated the associations of perceived availability of the home environment, convenient facilities, and perceived importance of the school environment and BMI z-score with ratios of mediating to total effects of 46.2%, 37.1%, and 37.5% respectively. Findings suggest that PA is a mechanism by which several environmental correlates may affect adolescents' body weight.
本研究旨在探讨身体活动（PA）是否在四个与 PA 相关的环境设置（家庭、学校、社区环境和便利设施）与中国 13-18 岁青少年的体重指数（BMI）之间的关系中起中介作用。评估了两个环境指标：（1）环境资源的感知可得性，以及（2）环境资源的感知重要性。中介分析表明，PA 中介了家庭环境、便利设施的感知可得性以及学校环境的感知重要性与 BMI z 分数之间的关联，其中介效应占总效应的比例分别为 46.2%、37.1%和 37.5%。研究结果表明，PA 是几个环境相关性因素可能影响青少年体重的一个机制。
