Efficacy of School-Based Interventions for Improving Muscular Fitness Outcomes in Adolescent Boys: A Systematic Review and Meta-analysis

Background It has been reported that boys’ and girls’ physical activity (PA) levels decline throughout adolescence. Boys are at risk of physical inactivity during adolescence; however, in intervention research, they are an under-represented group relative to girls. It is suggested that the school en...

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Bibliographic Details
Published in:Sports medicine (Auckland) 2020-03, Vol.50 (3), p.543-560
Main Authors: Cox, Ashley, Fairclough, Stuart J., Kosteli, Maria-Christina, Noonan, Robert J.
Format: Article
Language:English
Subjects:
Adolescent
Adolescents
Body weight
Boys
Child development
Children & youth
Girls
Grey literature
Humans
Intervention
Male
Males
Medicine
Medicine & Public Health
Meta-analysis
Muscle, Skeletal - physiology
Obesity
Physical activity
Physical Education and Training
Physical Fitness
Physical training
Plyometric Exercise
Registration
Resistance Training
Reviews
Schools
Sports Medicine
Strength training
Systematic Review
Teenagers
Trends
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Summary:Background It has been reported that boys’ and girls’ physical activity (PA) levels decline throughout adolescence. Boys are at risk of physical inactivity during adolescence; however, in intervention research, they are an under-represented group relative to girls. It is suggested that the school environment may be central to developing interventions that support adolescents in meeting the current PA guidelines. The aim of this systematic review and meta-analysis was to investigate the efficacy of school-based physical activity interventions for improving muscular fitness (MF) in adolescent males. Methods This systematic review and meta-analysis followed the preferred reporting systems for meta-analyses guidelines and was registered on PROSPERO (Registration number: CRD42018091023). Eligible studies were published in English within peer-reviewed articles. Searches were conducted in three databases, with an additional grey literature search in Google Scholar. Studies investigating MF outcomes were included. Results There were 43 data sets identified across 11 studies, from seven countries. Overall methodological quality of the studies was moderate-to-strong. Interventions targeting MF evidenced a small-to-medium effect ( g  = 0.32, CI 0.17, 0.48, p  
ISSN:0112-1642
1179-2035
DOI:10.1007/s40279-019-01215-5