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. 2020 Mar 17;17(6):1962.
doi: 10.3390/ijerph17061962.

Association of Sleep Duration and Overweight/Obesity among Children in China

Jing Fan  1 , Caicui Ding  1 , Weiyan Gong  1 , Fan Yuan  1 , Yan Zhang  1 , Ganyu Feng  1 , Chao Song  1 , Ailing Liu  1
Affiliations

Association of Sleep Duration and Overweight/Obesity among Children in China

Jing Fan et al. Int J Environ Res Public Health. .

Abstract

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.

Keywords: China; children; obesity; overweight; sleep duration.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Non-linear regression curves of associations of sleep duration with overweight (A) and obesity (B).
See this image and copyright information in PMC

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