Adherence to 24-Hour Movement Guidelines in Relation to the Risk of Overweight and Obesity Among Children and Adolescents.

PURPOSE

Adherence to overall 24-hour Movement Guidelines (24HGs) has been associated with childhood obesity in cross-sectional studies. However, few longitudinal studies have examined such associations, especially in China. We aimed to explore prospective associations between adherence to recommendations of 24HGs and risks of developing overweight and obesity among children and adolescents.

METHODS

We included participants (aged 6-17 years) without overweight and obesity at enrollment from the China Health and Nutrition Survey in 2004-2011 surveys and followed them till 2015. We assigned one point each to the adherence of guidelines for moderate-to-vigorous physical activity, recreational screen time and sleep, and summed them up to indicate the overall level of adherence to 24HGs (range: 0-3 points). The primary outcome was the first occurrence of overweight or obesity. Multivariable cox proportional hazard models were used to evaluate the corresponding associations.

RESULTS

Among 1,382 participants (mean age: 10.3 ± 3.2 years; 48.4% girls), a total of 152 (11%) individuals were identified as incident overweight and obesity during an average of 4.7 years of follow-up. Compared with participants nonadherent to any of the guidelines, those adhering to one (hazard ratio [HR] = 0.38, 95% confidence interval [CI]: 0.21-0.71, p < .01), two (HR = 0.49, 95% CI: 0.28-0.88, p = .02), and three (HR = 0.40, 95% CI: 0.17-0.91, p = .03) recommendations had significantly lower risks of developing overweight and obesity.

DISCUSSION

Children and adolescents who met any recommendations of 24HGs had significantly lower risks of developing subsequent overweight and obesity. Setting achievable goals such as adopting at least one recommendation could be considered in future public health recommendations to accelerate progress in childhood obesity prevention.