University of Minnesota, Division of Epidemiology and Community Health, Minneapolis, Minnesota, USA.
Obesity (Silver Spring). 2011 Feb;19(2):324-31. doi: 10.1038/oby.2010.242. Epub 2010 Oct 14.
Research to date in young children and adults shows a strong, inverse relationship between sleep duration and risk for overweight and obesity. Fewer studies examining this relationship have been conducted in adolescents. The purpose of the article is to describe the relationship between sleep and weight in a population of adolescents, controlling for demographics, energy intake, energy expenditure, and depression. This is a cross-sectional study of 723 adolescents participating in population-based studies of the etiologic factors related to obesity. We examined the relationship between three weight-related dependent variables obtained through a clinical assessment and three sleep variables obtained through self-report. Average caloric intake from dietary recalls, average activity counts based on accelerometers, and depression were included as covariates and the analysis was stratified by gender and grade level. Our results show that the relationship between sleep duration and BMI is evident in middle-school boys (β = -0.32, s.e. = 0.06: P < 0.001) and girls (β = -0.18, s.e. = 0.08: P = 0.02) but largely absent in high-school students. Differences in sleep patterns have little association with weight in males, but in high-school girls, waking up late on weekends as compared to weekdays is associated with lower body fat (β = -0.80, s.e. = 0.40: P = 0.05) and a healthy weight status (β = -0.28, s.e. = 0.14: P = 0.05). This study adds to the evidence that, particularly for middle-school boys and girls, inadequate sleep is a risk factor for early adolescent obesity. Future research needs to examine the relationship longitudinally and to study potential mediators of the relationship.
迄今为止的研究表明，儿童和成年人的睡眠时间与超重和肥胖风险之间呈负相关。针对这一关系，在青少年中进行的研究较少。本文的目的是描述青少年人群中睡眠与体重之间的关系，同时控制人口统计学、能量摄入、能量消耗和抑郁等因素。这是一项对 723 名参与肥胖相关病因学因素的基于人群的研究的青少年进行的横断面研究。我们通过临床评估获得了三个与体重相关的因变量，通过自我报告获得了三个睡眠变量，检验了这两者之间的关系。通过膳食回忆获得的平均热量摄入、基于加速度计的平均活动计数和抑郁作为协变量，分析按性别和年级分层。结果表明，睡眠时间与 BMI 的关系在中学男生（β=-0.32，s.e.=0.06：P<0.001）和女生（β=-0.18，s.e.=0.08：P=0.02）中明显，但在高中生中基本不存在。睡眠模式的差异与男性的体重关系不大，但在高中女生中，周末比工作日晚起与较低的体脂（β=-0.80，s.e.=0.40：P=0.05）和健康的体重状况（β=-0.28，s.e.=0.14：P=0.05）相关。本研究进一步证明，特别是对于中学男生和女生来说，睡眠不足是青少年早期肥胖的一个风险因素。未来的研究需要进行纵向研究，并研究该关系的潜在中介因素。
