Krommidas Χ.; Keramidas Π.; Galanis Ε.; Papaioannou Α.; Digelidis Ν.; Tzioumakis Γ.; Zourbanos Ν. Physical Activity, Body Mass Index and Aerobic Capacity of Youth Soccer Players: Results from the 1st Trial of Papa Project in Greece. ispe 2015, 13, 115-133.