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Updated: Feb 15, 2026

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Published on: July 27, 2022
Impact and Moderating Variables of an Intervention Promoting Physical Activity Among Children: Results From a Pilot
Mathieu Gourlan1, Monica Takito2, Céline Lambert3
11 Epidaure, Prevention Department of the Institut régional du Cancer de Montpellier, Montpellier, France.
Insights
A 1-month multilevel intervention significantly increased physical activity (PA) and theory of planned behavior (TPB) variables in children aged 7-11. Younger children showed greater improvements, and class/school levels influenced outcomes.
Area of Science:
- Pediatrics
- Behavioral Science
- Public Health
Background:
- Physical activity (PA) is crucial for child development.
- The theory of planned behavior (TPB) offers a framework to understand behavior change.
- Multilevel interventions may effectively promote PA in children.
Purpose of the Study:
- To evaluate a 1-month multilevel intervention's effect on children's PA.
- To assess the intervention's impact on TPB variables.
- To explore moderating effects of personal and situational factors on intervention outcomes.
Main Methods:
- Pilot study involving 306 children aged 7-11 years.
- A 1-month multilevel intervention targeting PA and TPB.
- Statistical analyses to assess intervention effects and moderating variables.
Main Results:
- Significant increases in PA and TPB variables observed (p < .001).
- Younger children demonstrated greater improvements in attitude and perceived control (p < .01).
- Class and school levels explained significant variance in PA and TPB changes (ICC > .10).
Conclusions:
- The multilevel intervention is feasible and effective for enhancing children's PA and TPB.
- Age, class, and school context are important factors in intervention effectiveness.
- Further research is warranted to optimize multilevel strategies for pediatric PA promotion.
Abstract:
This pilot study pursued three objectives: to assess the effect of a 1-month multilevel intervention on the PA of children, to assess the impact of the intervention on the theory of planned behavior (TPB) variables, and to evaluate the extent to which the impact of the intervention on PA and TPB variables varied according to personal (i.e., gender and age) and situational (i.e., class and school) moderating variables. Children were aged 7 to 11 years ( n = 306). Analyses revealed a significant increase of PA practice and TPB variables ( ps < .001). Age (i.e., being a younger child) was associated with a higher increase on attitude and perceived control ( ps < .01). The class or the school levels explained a meaningful variance in the evolution of PA or TPB variables (intraclass correlation coefficients > .10). The present study reports the interest and feasibility of a multilevel intervention to increase PA and TPB variables in children.
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