Conclusion
The results of this study suggest that adding 2 hours of school-based physical activity per week did not have a significant impact on rates of active travel among adolescents in Norwegian public schools. This is an important finding given the potential for the ActivityStat hypothesis to undermine the effectiveness of physical activity interventions. Future research should continue to examine the potential impact of school-based physical activity interventions on travel habits, as well as leisure-physical activity, particularly in other contexts and among different populations.