青少年社会支持、体力活动与问题性饮食行为的关系研究

Background Unhealthy dietary habits and inactive lifestyles contribute to weight gain during adolescence. Nevertheless, how social support, physical activity, and problematic eating behavior relate over time remains poorly understood, especially in separating enduring differences between individuals from fluctuations within individuals. We therefore conducted a three-wave longitudinal study with adolescents and used random-intercept cross-lagged panel modeling to examine these relationships. Methods We recruited a convenience sample of 671 students from 10 secondary schools in Jiangxi, Zhejian