大学新生数字媒介使用与健康促进行为的关系:基于平行潜变量增长模型OA

Objective To investigate the relationship between digital media use and health-promoting behaviors among university freshmen.Methods A total of 515 freshmen were surveyed longitudinally at four time points using the digital media health literacy scale and the health-promoting behavior scale.Mplus 8.3 software was employed to analyze the dynamic change trends of digital media use and health-promoting behaviors.Parallel latent growth models and cross-lagged models were used to examine their potential causal relationships.Results Both digital media use and health-promoting behaviors among freshmen showed significant upward trends(slope values=0.06 and 0.03,respectively;both P<0.001).The initial level of digital media use positively predicted the initial level(β=0.17,P<0.001)and growth rate(β=0.11,P<0.001)of health-promoting behaviors.Conversely,the initial level of health-promoting behaviors negatively predicted the growth rate of digital media use(β=-0.12,P<0.001).The growth rate of digital media use exerted a significantly positive predictive effect on the change rate of health-promoting behaviors(β=0.02,P<0.001).Cross-lagged analyses revealed that prior measurements of either digital media use or health-promoting behaviors significantly predicted subsequent measurements of the other variable,indicating a bidirectional predictive relationship.Conclusion This study clarifies the developmental trajectories and causal associations between digital media use and health-promoting behaviors among university freshmen,providing empirical evidence for universities to precisely design"media-empowered"health intervention programs.