Exercise trials in children showed clearer BMI findings than other measures
Pooled results favored lower body mass index, while waist size, skinfold thickness and blood pressure estimates remained uncertain.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Exercise interventions were linked to lower body mass index in children. Estimates for waist circumference, skinfold thickness and blood pressure were less conclusive because their confidence intervals included no difference. The analysis did not detect significant differences between preschool and school-age groups, but that does not prove the groups respond equally or establish the best program.
This brief relies on the abstract, which omits program durations, control conditions and details of individual exercise programs. Several confidence intervals include no difference, limiting how broadly the authors' favorable conclusion can be applied.
Understanding the BMI result
The abstract reports a standardized mean difference in BMI of -0.317 (95% CI -0.570 to -0.064), with control conditions and assessment timing unspecified. This common statistical scale does not express the difference in BMI units.
What the measurements can establish
The review assessed body measurements and blood pressure. Those endpoints do not by themselves establish changes in later health outcomes, and the abstract does not provide a separate pooled result for BMI z-score.
The original publication
Effect of physical activity on anthropometric and physiological parameters in preschool and school-aged children: a systematic review and meta-analysis of randomized controlled trials.
Wang N, Wang Q, Wang M et al.
Front Public Health · 2025
- PubMed ID
- 41000313
- Record checked
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