15 May 2020 : Clinical Research
Association Between Outdoor Activity and Insufficient Sleep in Chinese School-Aged Children
Jingyin Luo1ACDEF, Muqing Cao1ADE, Fan Sun2BC, Bijun Shi1BC, Xin Wang1C, Jin Jing1AEG*DOI: 10.12659/MSM.921617
Med Sci Monit 2020; 26:e921617
Abstract
BACKGROUND: The aim of this study was to explore the relationship between outdoor activity (OA) and insufficient sleep duration (ISD) among Chinese children and to assess the potential age- and gender-specific effects.
MATERIAL AND METHODS: A national sample of 62 517 children aged 6–17 years were recruited from 7 provinces of China in the autumn of 2013. Children and their caregivers reported daily sleep duration (<7 h, 7–9 h and ≥9 h), daily OA time (<1 h, 1–2 h, and ≥2 h), and other behavior and demographic information by standardized questionnaire. ISD was defined as <9 h/day. Logistic regression analysis was used to evaluate the relationship between ISD and OA.
RESULTS: In total, 46 639 children (50.9% boys) completed this survey. The prevalence of ISD was 74.9% (73.7% in boys and 76.1% in girls). Stratified by age, compared with <1 h OA, the odds ratios for ISD were 0.67 (95% confidence interval: 0.62–0.72, aged 6–13 years) and 0.69 (0.49–0.98, 14–17 years) in the ≥2 h OA group; 0.91 (0.85–0.97, 6–13 years) and 0.73 (0.54–0.97, 14–17 years) in the 1–2 h OA group. Further stratified by gender, we found similar trends for both boys and girls in each age group, although some results became non-significant.
CONCLUSIONS: Adequate OA time per day is associated with decreased risks for ISD among children aged 6–17 years, but age and gender can modify the association.
Keywords: Child, Motor Activity, Sleep, Adolescent, Asians, Cross-Sectional Studies, Exercise, Odds Ratio, Prevalence, Sleep Deprivation, Surveys and Questionnaires, Time Factors
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