新冠肺炎流行期间大学生视屏时间、身体活动与自评健康的关系

Relationship of screen time and physical activity with self-rated health among college students during the prevalence of COVID-19

目的了解新冠肺炎流行期间大学生视屏时间、身体活动与自评健康的关系,探讨身体活动在视屏时间与自评健康间的调节作用。方法采用自编问卷、身体活动量表和自评健康量表对12447名大学生进行问卷调查,采用线性分层回归模型分析身体活动对视屏时间与自评健康之间关系的调节作用。结果大学生视屏时间为(8.1±3.0)h/d,身体活动得分为(18.1±9.2)分,自评躯体健康、心理健康和社会适应得分分别为(71.6±9.2)分、(58.2±10.4)分和(62.3±11.8)分;视屏时间对自评健康有负向预测作用,身体活动对自评健康有正向预测作用;视屏时间与身体活动的交互作用在心理健康方面差异有统计学意义(β=-0.161,P<0.05)。结论身体活动对视屏时间与心理健康之间的关系具有负向调节作用。

Objective To investigate the association of screen time and physical activity(PA)with self-rated health among college students during the prevalence of COVID-19,and to explore the moderating role of PA in screen time and self-rated health.Methods A self-designed questionnaire,Physical Activity Rating Scale-3 and Self-rated Health Measurement Scale were used to conduct questionnaire surveys among 12,447 college students.A linear stratified regression model was employed to analyze the regulatory effect of PA in screen time and self-rated health.Results The screen time of the college students was(8.1±3.0)h/d,and the score of physical activity was(18.1±9.2)points.The scores of self-rated physical health,mental health and social adaptation were(71.6±9.2),(58.2±10.4)and(62.3±11.8)points,respectively.Screen time was a negative predictor of self-rated health,but PA was a positive predictor of self-rated health.There was a statistically significant difference in mental health in the interaction between screen time and physical activity(β=-0.161,P<0.05).Conclusion The present study reveals the negative moderating role of PA between screen time and mental health.