Articlebronze2016

Sleep Duration and Overweight/Obesity in Preschool-Aged Children: A Prospective Study of up to 48,922 Children of the Jiaxing Birth Cohort

Fenglei Wang · Huijuan Liu · Yi Wan · Jing Li · Yu Chen · Ju‐Sheng Zheng +2 more

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Abstract

STUDY OBJECTIVES: To examine the association between sleep duration and overweight/obesity in preschool-aged children. METHODS: A total of 48,922 3-year old children enrolled in the Jiaxing Birth Cohort, who provided sleep information and anthropometric data, were included in the present study as baseline and were followed up to 5 years of age. Sleep duration was categorized as ≤ 10 hours, 11-12 hours, and ≥ 13 hours. Overweight and obesity were defined according to the cut point criteria in China. Prevalence ratios and risk ratios were used to assess the association between sleep duration and risk of overweight/obesity. RESULTS: In cross-sectional analyses at baseline, the adjusted prevalence ratios (95% confidence interval) of overweight (with 11-12 h of sleep being considered the reference group) for children sleeping ≤ 10 h and ≥ 13 h were 1.13 (1.06-1.20) and 1.16 (1.09-1.24), respectively, whereas the adjusted prevalence ratios (95% confidence interval) of obesity were 1.25 (1.11-1.40) and 1.25 (1.11-1.42). In longitudinal analyses, the adjusted risk ratios (95% confidence interval) of overweight for children sleeping ≤ 10 h and ≥ 13 h were 1.48 (1.26-1.74) and 1.13 (0.96-1.34), while adjusted risk ratios (95% confidence interval) of obesity were 1.77 (1.30-2.40) and 1.19 (0.85-1.66). Restricted cubic splines regression supported U-shaped curvilinear associations between sleep duration and overweight/obesity in both cross-sectional and longitudinal analyses. CONCLUSIONS: Both short and overlong sleep duration are associated with a higher risk of overweight/obesity in preschool-aged children. Optimizing sleep duration may be an important modifiable intervention for overweight and obesity.

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References

1999Impact of sleep debt on metabolic and endocrine function 2003A Prospective Study of Sleep Duration and Coronary Heart Disease in Women 2004The Association Between Short Sleep Duration and Obesity in Young Adults: a 13-Year Prospective Study 2006Association between Reduced Sleep and Weight Gain in Women 2005Sleep/Wake Patterns Derived from Activity Monitoring and Maternal Report for Healthy 1- to 5-Year-Old Children 2008The association between sleep duration and obesity in older adults 2012Never Enough Sleep: A Brief History of Sleep Recommendations for Children 2005Sex Differences in the Association between Sleep and Body Mass Index in Adolescents

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