Initiative Description: A minimum of one teacher from each class at the intervention schools attended a course on incorporating physical activity into academic lessons. Scheduled activities during recess were initiated by teachers and volunteer students who received the course. Physical activity homework consisted of a booklet containing suggestions for various Daily activities of 5–10 minutes, and students were instructed to perform at least one activity on all days. It was emphasized that these activities were in addition to usual Daily activities. A two-week cycling campaign was launched in the middle of the intervention to facilitate active transportation by cycling. Finally, a custom made “activity watch” was used as a shared tool for teachers and students to serve as motivation and to sum up the amount of time the class had engaged in physical activity during academic subjects and scheduled recess activities.
Study Results: An intervention effect was found for cardiorespiratory fitness in girls (21 meters (95% CI: 4.4–38.6) and body-mass index in boys (-0.22 kg/m2 (95% CI: -0.39–0.05)