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01.12.2015 | Study protocol | Ausgabe 1/2015 Open Access

BMC Public Health 1/2015

The ACT-i-Pass study protocol: How does free access to recreation opportunities impact children’s physical activity levels?

BMC Public Health > Ausgabe 1/2015
Jason A. Gilliland, Andrew F. Clark, Patricia Tucker, Harry Prapavessis, William Avison, Piotr Wilk
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

JG is the principal investigator of the project, led the development of the study design and methodology, and co-wrote the paper. AC is the project manager on the study, helped develop the study design and methodology, and co-wrote the paper. PW is a co-investigator on the project, helped develop the study design and methodology, and critically edited the paper. WA, HP, & PT provided guidance and advice in the study design and methodology, and critically edited the paper. All authors read and approved the final manuscript.



Physical activity during childhood is associated with a multitude of physical, behavioural, and psychological health benefits. Identification of effective population level strategies for increasing children’s physical activity levels is critical for improving the overall health of Canadians. The overall objective of this study is to assess how a naturally-occurring, community-level intervention which offers Grade 5 children in London, Canada a free access pass to physical activity opportunities (facilities and programs) for an entire school year can lead to increased physical activity among recipients.


This study adopts a longitudinal cohort study design to assess the effectiveness of improving children’s access to physical activity opportunities for increasing their physical activity levels. To meet our overall objective we have three aims: (1) to assess whether the provision of free access increases children’s physical activity levels during and after the intervention compared to a control group; (2) to assess how and why child-specific trajectories of physical activity (between-children differences in level of physical activity measured across time) in the intervention group differ according to children’s individual and household characteristics; and (3) to explore additional factors that are unaccounted for in the theoretical model to gain a further understanding of why the free access intervention had varying effects on changing physical activity levels. We will be addressing these aims using a mixed methods approach, including: a series of youth surveys conducted before, during, immediately after, and 4-months after the intervention; parent surveys before, during, and post-intervention; real-time tracking of the access pass use during the intervention; and focus groups at the conclusion of the intervention. Data compiled from the youth surveys will provide a subjective measure of physical activity to be used as our outcome measure to address our primary aims.


The results of this study can inform policy- and decision-makers about the sub-groups of the population that benefitted the most (or least) from the intervention to provide more specific information on how to develop and target future interventions to have a greater impact on the physical activity levels and overall health of children.
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