Increasing physical activity and reducing time spent sedentary is important throughout life, including in adolescence. However, many adolescents are not active for the government recommended time of 60 minutes per day, and they also sit for long periods, particularly at school.

The Creating Active School Environments (CASE) project aimed identify how to change a secondary school’s policy, social or physical environment to promote activity and reduce time spent sedentary. The overall aim of the project, funded by the Department of Health Policy Research Programme, was to identify and evaluate opportunities within the school environment to improve the distribution of activity intensity in adolescents attending secondary school.

Specific objectives were:

1. To identify potential avenues for school-level activity-related policy and physical environmental interventions through a systematic review of the evidence.
2. To further inform intervention opportunities by examining school-level determinants of change in adolescents’ sedentary behaviour and physical activity.
3. To prioritise potential intervention approaches using a pre-specified, stakeholder-led consensus method.
4. To test the feasibility of promising interventions to improve the activity distribution of adolescents in secondary schools.

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• Summary of key findings of the CASE project
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