Article

Effect of school-based interventions on physical activity and fitness in children and adolescents: a review of reviews and systematic update.

Swiss Tropical and Public Health Institute, University of Basel, Socinstr 59, 4002 Basel, Switzerland.
British journal of sports medicine (impact factor: 2.55). 09/2011; 45(11):923-30. DOI:10.1136/bjsports-2011-090186 pp.923-30
Source: PubMed

ABSTRACT School-based interventions are thought to be the most universally applicable and effective way to counteract low physical activity (PA) and fitness although there is controversy about the optimal strategy to intervene.
The objective of this review was to summarise recent reviews that aimed to increase PA or fitness in youth and carry out a systematic review of new intervention studies.
Relevant systematic reviews and original controlled and randomised controlled school-based trials with a PA or fitness outcome measure, a duration of ≥12 weeks, a sufficient quality and involvement of a healthy population aged 6-18 years that were published from 2007 to 2010 were included. Results In these reviews, 47-65% of trials were found to be effective. The effect was mostly seen in school-related PA while effects outside school were often not observed or assessed.
The school-based application of multicomponent intervention strategies was the most consistent, promising strategy, while controversy existed regarding the effectiveness of family involvement, focus on healthy populations at increased risk or duration and intensity of the intervention. All 20 trials in the review update showed a positive effect on in-school, out-of-school or overall PA, and 6 of 11 studies showed an increase in fitness. Taking into consideration both assessment quality and public health relevance, multicomponent approaches in children including family components showed the highest level of evidence for increasing overall PA. This review confirms the public health potential of high quality, school-based PA interventions for increasing PA and possibly fitness in healthy youth.

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Keywords

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assessment quality
 
family components
 
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Relevant systematic reviews
 
School-based interventions
 
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