Before/Afterschool Activity
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Initiative Description: Implement an after-school walking program in which teachers walk at a moderate intensity for 30 minutes per day, 3 times per week. Teachers walked either outside on the school playground or through the school corridors in the case of inclement weather.

Study Results: For the exercising teachers, the time and frequency domain parameters of Heart Rate Variability (HRV) all had significant increases between the beginning and after 12 weeks of training. However, the time and frequency domain parameters of HRV in the nonexercise group had significant decreases between the beginning and after 12 weeks of training.

Reference: Liu, S., Cheng, D., Wang, J., Lin, T., & Chang, K. (2015). Effects of moderate exercise on
relieving mental load of elementary school teachers. Evidence-Based Complementary and
Alternative Medicine, 2015.

Level of Evidence: 2 out of 5 stars Good