The sample consisted of seven male, highlevel hurdlers (age: 21.7 ± 2.4 years; body mass:
75.1 ± 4.1 kg; body height: 181.8 ± 3.9 cm; personal record: 54.78 ± 2.54 s). All subjects were highly competitive athletes with national andinternational success and were selected at a
Performance Centre in Spain.