Results from a published paper in the Archives of Pediatrics and Adolescent Medicine show that less than one fourth of youth athletes obtained the recommended 60 minutes of MVPA during sports practices. Thus, organized sports participation is not sufficient to ensure youth meet recommendations on practice days.
Physical activity levels varied by type of sport, age and gender. The full brief can be found here.
Leek, D., Carlson, J.A., Cain, K.L., Henrichon, S., Rosenberg, D., Patrick, K., and Sallis, J.F. (2011). Physical activity during youth sports practices. Archives of Pediatrics and Adolescent Medicine. Published online December 6, 2010; print version April 2011.