Department of Nutrition and Health Education, National Institute for Nutrition and Health, Chinese Center for Disease Control and prevention, Beijing 100050, China.
Int J Environ Res Public Health. 2020 Mar 17;17(6):1962. doi: 10.3390/ijerph17061962.
To investigate the association of sleep duration with overweight and obesity among children aged 6 to 17 years in China, 2010-2012 data from the China National Nutrition and Health Surveillance (CNHHS) were analyzed. A total of 35,414 children were recruited in the survey. Body mass index (BMI) was converted into three categories: normal weight, overweight and obesity. In multinomial logistic regression model, sleep duration was divided into four groups: very short, short, recommended and long. In restricted cubic splines (RCS), sleep duration was examined as a continuous variable in relation to overweight and obesity. In the very short and short groups, sleep duration was a risk factor for obesity after adjusting for the potential impacts of age, gender, residence, family income, leisure sedentary behavior (SB) and leisure exercise, with OR (Odds Ratio) = 3.01 (95% CI (confidence interval): 2.19-4.15) and OR = 1.24 (95% CI: 1.14-1.35), respectively. The adjusted OR of overweight for short sleep duration relative to a recommended sleep duration was 1.17(95% CI: 1.09-1.26). No significant associations of very short sleep with overweight, of long sleep duration with overweight and obesity were found. The RCS curves between sleep duration and overweight and obesity were both inverted J-shaped. To conclude, the shorter the sleep duration, the higher the risk of overweight and obesity in children. Increasing sleep duration would have a positive effect on reducing overweight and obesity rates in Chinese children.
为了研究中国 6 至 17 岁儿童睡眠时间与超重和肥胖的关系,分析了 2010-2012 年中国国家营养与健康监测(CNHHS)的数据。调查共纳入了 35414 名儿童。体重指数(BMI)分为三类:正常体重、超重和肥胖。在多变量逻辑回归模型中,睡眠时间分为四组:非常短、短、推荐和长。在限制三次样条(RCS)中,睡眠时间被视为与超重和肥胖相关的连续变量。在非常短和短的组中,调整年龄、性别、居住地、家庭收入、休闲久坐行为(SB)和休闲运动等潜在影响因素后,睡眠时间是肥胖的危险因素,OR(优势比)=3.01(95%CI:2.19-4.15)和 OR=1.24(95%CI:1.14-1.35)。与推荐睡眠时间相比,短睡眠时间发生超重的调整 OR 为 1.17(95%CI:1.09-1.26)。睡眠时间非常短与超重、长睡眠时间与超重和肥胖之间没有显著关联。睡眠时间与超重和肥胖之间的 RCS 曲线均呈倒 J 形。总之,睡眠时间越短,儿童超重和肥胖的风险越高。增加睡眠时间对降低中国儿童超重和肥胖率有积极作用。