Aerobic fitness in young soccer players: The Yo-Yo intermittent endurance test as indicator of aerobic power and anaerobic threshold - Valamatos, M. J.; Charrua, C.; Gomes-Perreira, J.; Mil-Homens Santos, P. (12th Annual Congress of the European College of Sport Science, Jyväskylä, Finland - July 11-14th 2007, 2007)