The effect of school-based physical activity interventions on body mass index: a meta-analysis of randomized trials

The effect of school-based physical activity interventions on body mass index: a meta-analysis of randomized trials

Author Guerra, Paulo Henrique Google Scholar
Nobre, Moacyr Roberto Cuce Google Scholar
Silveira, Jonas Augusto Cardoso da Autor UNIFESP Google Scholar
Taddei, Jose Augusto de Aguiar Carrazedo Autor UNIFESP Google Scholar
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract This study reviewed the effectiveness of school-based physical activity interventions aimed at reducing overweight, obesity and hypertension in children. We searched 14 databases and analyzed studies published between April 2009 and September 2012. Only randomized controlled trials performed at the school level that included elements of physical activity but did not include nutritional co-interventions were analyzed. Studies were assessed by two recommended tools (EPHPP and GRADE), and the standardized mean differences with 95% confidence intervals were collected for a random-effect meta-analysis. A total of 12 papers were included in the meta-analysis, and these were divided according to three outcomes: body mass index (11 trials, n  =  4,273, −0.02, 95% CI: −0.13 to 0.17, p  =  0.8); body weight (5 trials, n  =  1,330, −0.07, 95% CI: −0.18 to 0.04, p  =  0.2); and blood pressure (6 trials, n  =  1,549), including systolic (0.11, 95% CI: −0.10 to 0.31, p  =  0.3) and diastolic pressure (−0.00, 95% CI: −0.10 to 0.10, p  =  0.9). This meta-analysis of data from 11 randomized, school-based physical activity interventions suggests that, regardless of the potential benefits of physical activity in the school environment, the interventions did not have a statistically significant effect. However, it is difficult to generalize from these results because the duration, intensity and type of physical activity used in the interventions varied greatly.
Keywords Children
Physical Education and Training
Randomized Controlled Trials
Language English
Sponsor Cotas do Programa de Pos-Graduacao do Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
Fundacao de Amparo a Pesquisa de Sao Paulo (FAPESP)
Grant number 09/12438-5
Date 2013-09-01
Published in Clinics. Faculdade de Medicina / USP, v. 68, n. 9, p. 1263-1273, 2013.
ISSN 1807-5932 (Sherpa/Romeo, impact factor)
1980-5322 (Sherpa/Romeo, impact factor)
Publisher Faculdade de Medicina / USP
Extent 1263-1273
Access rights Open access Open Access
Type Article
Web of Science ID WOS:000326016600014
SciELO ID S1807-59322013000901263 (statistics in SciELO)

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