A systematic review of intervention effects on potential mediators of children’s physical activity

BMC Public Health

Jo Salmon²  Natalie Pearson¹  Clare Hume²  Helen Brown² 

[1] School of Sport, Exercise & Health Sciences, Loughborough University, Loughborough, UK;School of Exercise and Nutrition Sciences, Deakin University, Melbourne, Australia

关键词: Theory;    Physical activity promotion;    Child;    Mediator;   

Others  :  1162514
DOI  :  10.1186/1471-2458-13-165

 received in 2012-08-03, accepted in 2013-02-20,  发布年份 2013

【 摘 要 】

Background

Many interventions aiming to increase children’s physical activity have been developed and implemented in a variety of settings, and these interventions have previously been reviewed; however the focus of these reviews tends to be on the intervention effects on physical activity outcomes without consideration of the reasons and pathways leading to intervention success or otherwise.

To systematically review the efficacy of physical activity interventions targeting 5-12 year old children on potential mediators and, where possible, to calculate the size of the intervention effect on the potential mediator.

Methods

A systematic search identified intervention studies that reported outcomes on potential mediators of physical activity among 5-12 year old children. Original research articles published between 1985 and April 2012 were reviewed.

Results

Eighteen potential mediators were identified from 31 studies. Positive effects on cognitive/psychological potential mediators were reported in 15 out of 31 studies. Positive effects on social environmental potential mediators were reported in three out of seven studies, and no effects on the physical environment were reported. Although no studies were identified that performed a mediating analysis, 33 positive intervention effects were found on targeted potential mediators (with effect sizes ranging from small to large) and 73% of the time a positive effect on the physical activity outcome was reported.

Conclusions

Many studies have reported null intervention effects on potential mediators of children’s physical activity; however, it is important that intervention studies statistically examine the mediating effects of interventions so the most effective strategies can be implemented in future programs.

【 授权许可】

   
2013 Brown et al; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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