中文摘要：

目的 探讨青少年睡眠时间、饮食模式与超重/肥胖的相关关系.方法 对初中生睡眠时间、饮食模式、体力活动和视频时间等采用问卷调查,同时收集体格数据,分析睡眠时间和饮食模式对超重/肥胖的影响.结果 徐州市区初中男生超重率为23.5％,肥胖率为22.5％;女生超重率为18.1％,肥胖率为11.9％.男生睡眠不足（＜8 h/d）为28.1％,女生睡眠不足为33.0％.多因素logistic回归分析显示男生睡眠时间＜7 h/d是超重/肥胖发生的危险因素,OR=1.72（95％CI：1.08 ～ 2.74）,而女生睡眠时间和超重/肥胖的关系不显著.调整了年龄、父母文化程度、自评家庭收入、体力活动、看视频时间及超重/肥胖变量后,男生睡眠时间＜7 h/d者零食类食物摄入频次增加,OR=1.69（95％CI：1.10～2.73）.结论 睡眠减少为初中男生超重/肥胖发生的独立危险因素,且男性青少年睡眠减少可导致零食类食物摄入增加.提示男生零食类食物摄入过多在睡眠减少和超重/肥胖关系中的联结作用.

英文摘要：

Objective To describe the relationships between sleep duration,dietary patterns and overweight/obesity among adolescents in Xuzhou,and to develop prevention and intervention strategies for adolescent-obesity.Methods Data of 3 103 boys and girls from 5 junior high schools were analyzed.Self-reported information on duration of sleep,dietary patterns,physical activities and time spent on watching video/audio program were assessed and physique data was also collected.Descriptive statistics,multiple liner regression and logistic regression models were used.Results The prevalence rates on overweight and obesity in boys were 23.5% and 22.5%,and in girls were 18.1% and 11.9%,respectively.Proportions of insufficient sleep （〈 8 h/d） in boys appeared 28.1% and in girls as 33.0%.From logistic regression analysis revealed that there appeared risk on the prevalence of overweight and obesity in boys who had sleep duration 〈7 h/d [OR（95%CI）：1.72 （1.08-2.74）],but no significant association was found between duration of sleep and overweight/ obesity in girls.After adjusting on age,levels of parental education,family income,physical activities,time spent on watching video/audio programs,and weight status,boys who had sleep duration less than 7 h/d would have the odds ratio of 1.69 （1.10-2.73）,for the likelihood of increasing the frequency of eating snacks compared to their counterparts who had sleep duration of ≥8 h/d.Conclusion The Shortened duration of sleep seemed an independent risk factor on overweight/ obesity among male adolescents,and it was associated with the increased frequency of eating snacks.Data from our study showed that the dietary patterns might play a role in the association between duration of sleep and overweight/obesity,among male adolescents.