短视频浏览时长对大学生身心健康的影响机制研究―基于中国29省1002名大学生实证研究

The rapid development of short video applications has made browsing short videos an integral part of contemporary university students' daily lives, significantly impacting their physical and mental health. From the perspective of the "Time Displacement Hypothesis" and based on the theories of "Health Demand" and "Social Capital," this study employs quantitative analysis to explore the mechanisms through which short video browsing duration affects university students' well-being. The findings indicate that: firstly, current short video browsing duration has significant negative effects on students' physical and mental health; secondly, browsing duration significantly reduces time investment in social capital; thirdly, both health capital and social capital time investment positively correlate with well-being; fourthly, social capital time investment plays a significant mediating role in the pathway between browsing duration and health outcomes; fifthly, while most students recognize these adverse effects, they struggle to self-regulate their viewing behaviors. In response to these findings, we propose a multidimensional intervention framework encompassing time management, social environment optimization, incentive mechanisms, health awareness cultivation, and alternative activity provision. This systemic approach requires collaborative efforts among universities, society, families, and individuals to establish a comprehensive governance system that spans behavioral intervention to ecological regulation, ultimately aiming to harness the positive potential of short videos as tools for holistic development while providing actionable insights for building a healthy digital ecosystem.