Participation in youth sports can provide a wide range of health-enhancing benefits and gains in health-related fitness.Endurance exercise training enhances exercise tolerance and ultimately improves the performance of adolescents.In general, aerobic training leads to a mean improvement of 5-6% in the peak oxygen uptake of adolescents.Children have higher Anaerobic Thresholds, which suggested that intensities higher than 80% of maximal heart rate are necessary to expect a significant improvement in fitness.