Effectiveness of school-based physical activity and nutrition interventions with direct parental involvement on children's BMI and energy balance-related behaviors - A systematic review.

PLoS One · 2018 · PMC6160096 · PMID 30261057

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a positive trendno p-value reported

Six studies reported their intervention to be ineffective regarding BMI and BMI z-score [ 26 , 30 – 32 , 36 , 43 ], although three of these showed a positive trend (ES -0.10 and -0.01, respectively) [ 31 , 32 , 36 ].

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