抑郁和失眠在青少年中的调节中介模型

This study aimed to examine the association between depression and insomnia among adolescents and to investigate the mediating role of short video addiction (SVA) and the moderating role of physical activity (PA) in this association. A cross-sectional questionnaire survey was conducted among 725 adolescents from Hunan and Sichuan provinces, China. Depression, insomnia, SVA, and PA were assessed using standardized measures. Descriptive statistics and correlation analyses were performed using SPSS 26.0. The PROCESS macro for SPSS was used to test the mediating effect of SVA (Model 4) and the mod