Background: Increasing school-day physical activity through policy and programs is commonly
suggested to prevent obesity and improve overall child health. However, strategies that focus on
school-day physical activity may not increase total physical activity if youth compensate by reducing
physical activity outside of school.
Purpose: Objectively measured, nationally representative physical activity data were used to test the
hypothesis that higher school-day physical activity is...
Authors: Michael Long, Arthur Sobol, Angie Cradock, SV Subramanian, Robert Blendon, Steven Gortmaker