Promoting physical activity in children and youth: A leadership role for schools – A scientific statement from the American Heart Association Council on Nutrition, Physical Activity, and Metabolism (Physical Activity Committee) in collaboration with the Councils on Cardiovascular Disease in the Young and Cardiovascular Nursing - Pate, R R; Davis, M G; Robinson, T N; Stone, E J; McKenzie, T L; Young, J C (Circulation, 2006)