ArticleBMC public health2025
Associations of sleep, sedentary behavior, and physical activity during out-of-school time and the risk of overweight and obesity in children and adolescents: a dose-response and isotemporal substitution analysis.
Article in BMC public health, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
4 citing papers in PubMed.
- Recess as a Setting for Child Development: A Randomized Controlled Trial on Physical Activity, Motor Skills and Social-Emotional Functioning.The Journal of school health · 2026Trial
- Sex differences in blood pressure and physical activity among socioeconomically vulnerable Portuguese schoolchildren aged 6 to 10 years: insights from the BeE-school Project.BMC pediatrics · 2026Article
- Environmental Determinants of Pediatric Obesity: An Epidemiological Review.Epidemiologia (Basel, Switzerland) · 2026Review
- Overweight, Obesity, and Lifestyle Behaviors in Immigrants and Native Children in Madrid-ASOMAD Study.Nutrients · 2025Article
Corrections and comments
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Authors and funding
3 authors.
Funding
Abstract
backgroundFor students, sleep, sedentary behavior (SB), and physical activity (PA) all have a direct impact on overweight and obesity. However, out-of-school time SB, PA, and sleep have not been adequately studied for their effects on overweight and obesity. We aim to explore the correlations among PA, SB, sleep duration, and the likelihood of excess body weight in youth during out-of-school hours, focusing on dose-response relationships and isotemporal substitution effects.
methodsThis study conducted a cross-sectional analysis by employing data obtained from the China Health and Nutrition Survey, spanning from 2004 to 2015. Restricted cubic spline and isotemporal substitution model were used to assess the corresponding relationships. The weighted quantile sum regression was used to study how different behaviors contribute to the risk of excess body weight.
resultsThere are linear dose-response relationships between sleep, SB, and moderate-to-vigorous physical activity (MVPA) during out-of-school hours and the risk of overweight and obesity in children and adolescents (all P for nonlinear > 0.05). Furthermore, screen-based SB shows a non-linear dose-response association with overweight/obesity. (P for nonlinear = 0.038). Theoretically, replacing 10 min of SB with an equal amount of sleep and PA could reduce the risk of overweight and obesity by 2.3-4.4%. Considering sleep, MVPA, and LPA during out-of-school time together, sleep contributed the most to overweight and obesity(weight = 0.6363).
conclusionsDuring out-of-school time, SB demonstrated a cross-sectional dose-response association with a heightened likelihood of overweight and obesity in childhood. Conversely, sleep and MVPA displayed a contrasting dose-response association with overweight and obesity risk when compared to SB. Substituting SB with sleep or PA might potentially mitigate the risk of overweight and obesity.
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