关键词: 超重肥胖, 青少年, 睡眠时间, 相关分析

Abstract: Objective To understand the sleep status of middle school students in Urumqi and its correlation with overweight and obesity, in order to provide support for effective control of overweight and obesity in middle school students. Methods A total of 8 242 middle school students from 20 secondary schools in Urumqi were randomly selected to investigate their sleep status from March to April 2016, and their relationship with overweight and obesity was analyzed. Results The sleep quality score of middle school students in Urumqi was 4.97±2.48; The detection rate of sleep quality problems was 28.44%, and it was significantly lower in boys (26.36%) than that in girls (30.43%) (χ²=16.66, P<0.01).The average sleep time of middle school students was (8.18±1.16) h/d, and the detection rate of sleep insufficiency was 48.24%.The overweight/obesity rate of middle school students was 15.47%, and it was significantly higher in boys, urban areas, junior high schools (χ²=191.04,11.21,44.36, P<0.01).Multiple regression analysis showed that gender, age, sleep time were related to body mass index (BMI) in secondary students (P<0.05).Sleep time was negatively correlated with BMI, while age was positively correlated with BMI.Logistic regression analysis showed that sleep time insufficiency in middle school boys was a risk factor for overweight and obesity (OR=1.23, 95%CI:1.04-1.47,P=0.02), boys′ sleep quality was not found correlated with overweight and obesity.Meanwhile, there was no statistical relationship between sleep quality and overweight and obesity in girls. Conclusions There is a close relationship between sleep time and BMI in middle school students.Insufficient sleep of boys may be a risk factor for overweight and obesity.

Key words: overweight and obesity, adolescents, sleep time, correlation analysis