北京市初中生负性情绪流行现况及与身体活动关系

目的 分析北京市初中生负性情绪流行现况,及其与身体活动的关系,为改善学生负性情绪,促进学生心理健康提供科学依据.方法 于2014年3-5月,采用分层整群随机抽样方法对北京市18个区县63所中学的12 338名初中生进行负性情绪及身体活动情况调查,分析北京市初中生负性情绪流行现况及其与身体活动的关系.结果 1 517名(...

Prevalence of negative affect and its association with physical activity among junior high school students in Beijing

Objective To analyze the current situation of negative affect among junior high school students in Beijing and its association with physical activity, so as to provide evidence for improving students' negative affect and promoting their mental health. Methods Using stratified multistage cluster sampling, a self-administered questionnaire survey was conducted among 12 338 students from 63 junior high schools in 18 counties/districts of Beijing from March to May in 2014.The prevalence of negative affect and its association with physical activity were analyzed. Results In the past 12 months, 1 517 (12.30%) students often/always felt lonely, 3 337 (27.05%) students often/always felt unhappy due to academic pressure or performance problems, 1 514 (12.27%) students often/ always had insomnia because of worrying about something, and 1 354 (10.97%) students stopped their usual activities because of sadness and despair for 2 weeks or more.The trend χ² test showed that the increased frequency of physical activity was closely associated with the decrease of self-reported negative affect.After adjusting for sex, area, school type, grade and academic performance, the Log-binomial models showed that students who were physically active for 60 minutes or more generally had a lower risk of negative affect compared with those who were never physically active for 1 week.And having physical activity for 3 days or more weekly could significantly reduce the risk of all four kinds of negative affect, especially for those students with loneliness.When stratified by sex, area, school type, grade or academic performance, the associations between physical activity and one or more negative affect were observed in varying degrees at almost all subgroups excepted for students at the ninth grade. Conclusions The junior high school students in Beijing have relatively high prevalence of negative affect.Actively participating in physical activity for more than 3 days per week helps to improve the mental health for most students, and has the most significant effect on loneliness.