Opportunities for student physical activity in elementary schools: a cross-sectional survey of frequency and

Tracie A Barnett1, Jennifer O'Loughlin, Lise Gauvin

  • 1Department of Social and Preventive Medicine/Groupe de Recherche Interdisciplinaire en Santé, University of Montreal, C.P. 6128 succursale Centre-Ville, Montréal (Québec), Canada H3C 3J7. ta.barnett@umontreal.ca