The group of subjects consisted of 35 voluntary male athletes (19 bas-ketball and 16 volleyball players; age: 23.4 ± 1.4 years, training
experience: 9.6 ± 2.7 years; height: 177.2 ± 5.7 cm, body weight:
69.9 ± 6.9 kg) studying Physical Education, with a jump training
background, who were training for 2 hours, on 4 days in a week