Schaefer, Lee, Plotnikoff, Ronald C., Veugelers, Paul, Wozny, Paul, McCargar, Linda, Downs, Shauna, Lewanczuk, Richard, Gleddie, Douglas, McGavock, Jonathan, Majumdar, Sumit R., Mollard, Rebecca, Woo, Meaghan, Sadman, Rashik, Rinaldi, Randi Lynn, Boule, Normand, Torrance, Brian, Ball, Geoff D. C.. Mosby; 2014. Outdoor time is associated with physical activity, sedentary time, and cardiorespiratory fitness in youth.