Relation of adolescents’ physical activity to after-school recreation environment
Journal of Physical Activity and Health
Authors
Christina M. Thornton; Kelli L. Cain, M.A.; Terry L. Conway, Ph.D.; Jacqueline Kerr, M.D.; Brian E. Saelens, Ph.D.; Lawrence D. Frank, Ph.D., M.Sc.; Karen Glanz, Ph.D.; James F. Sallis, Ph.D., M.S.