Effects of a Brief Physical Activity Program on Young Students’ Physical Fitness

BACKGROUND: Our objective was to test whether brief daily activity could increase young students' physical fitness and compare different forms of intervention delivery. METHODS: Two intervention groups were instructed to increase children's activity by 6 minutes daily. The principal was responsible for the intervention in the first group while classroom teachers were responsible in the second. The third group was a control. Success was defined by changes in student fitness. RESULTS: The principal-led group had a significant increase in the number of 75-foot laps completed after intervention (+0.61 laps) and a significant decrease in after-exercise heart rate (-37.4 beats per minute) as compared with the control group. The teacher-led group experienced no change in either outcome. CONCLUSIONS: Our findings demonstrate that a 6-minute increase in activity can produce a significant improvement in student fitness. Administrative support of school-based interventions can have a positive impact on program completion.