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目的了解杭州市余杭区初中生的周末静态行为现状及其与超重肥胖的关联,为有效控制中学生超重肥胖的发生提供依据。方法整群选取余杭区2所初中的1 139名学生,通过问卷调查向学生及家长了解周末各类静态行为时间、饮食习惯、身体活动量、睡眠时间和自感学习压力等,根据学生身高和体重计算体质量指数(BMI)。结果初中生周末屏前娱乐和做书面作业时间中位数均为3 h,女生较男生更倾向于长时间看书刊杂志和用计算机学习(P值均<0.05)。Logistic回归分析显示,控制饮食、身体活动、睡眠和自感学习压力因素后,周末屏前娱乐超过3 h是男生超重肥胖的独立危险因素(OR=2.227,95%CI=1.439~3.445);周末屏前娱乐超过3 h(OR=1.923,95%CI=1.034~3.577)和用计算机学习超过50 min(OR=2.073,95%CI=1.094~3.928)均是女生超重肥胖的独立危险因素。结论余杭区初中生周末静态行为时间长,与屏幕相关的娱乐和学习会增加学生发生超重肥胖的危险性。
Objective To understand the status quo of weekend static behavior of junior high school students and their association with overweight and obesity in Yuhang District, Hangzhou City, so as to provide basis for effectively controlling overweight and obesity among middle school students. Methods A total of 1 139 students from 2 junior high schools in Yuhang District were enrolled in this study. Through questionnaire survey, students and their parents were asked to know about all kinds of static behavioral time, eating habits, physical activity, sleeping time and self - Body mass index body mass index (BMI). Results The median pre-screen entertainment and written assignments for junior high school students were both 3 h at weekend. The girls tended to read books, magazines and computers for a longer period of time (P <0.05) than boys. Logistic regression analysis showed that over 3 hours of pregame weekend entertainment was an independent risk factor for overweight and obesity in boys (OR = 2.227, 95% CI = 1.439 ~ 3.445) after controlling for stress factors such as diet, physical activity, sleep and self- Pre-screen entertainment over 3 h (OR = 1.923, 95% CI = 1.034-3.577) and computer learning over 50 minutes (OR = 2.073, 95% CI = 1.094-3.928) were all independent risk factors for overweight and obesity in girls. Conclusion The static behavior of junior high school students in Yuhang District has a long time on weekends. The entertainment and learning related to the screen increase the risk of overweight and obesity.