THE EFFECT OF WATER RESTRICTION ON ANAEROBIC POWER AND VERTICAL JUMPING HEIGHT IN BASKETBALL PLAYERS

This study examined the effect of high intensity, moderate duration (4 0 min) exercise and water restriction on anaerobic power, vertical jum ping height, and basketball shooting performance. Ten healthy male bas ketball players participated in two simulated '2 on 2 full-court' bask etball games. Water consumption was permitted in one game (Wa) but not in the other (NWa), in a balanced cross-over design. Subjects began e ach game euhydrated. All jump tests (squat jump, counter movement jump , and 30 second jump test) were performed prior to, at half-time, and immediately following each game (POST). Performance was measured by bo th field goal (FG%) and free throw (FT%) percentages recorded during e ach half. Players incurred a -1.9+/-0.4 % body weight loss during NWa. No significant differences were observed between WA and NWa in anaero bic power, squat jump, or counter movement jump. However, a 19 % diffe rence in anaerobic power (p>0.05) was observed between Wa (36.1+/-4.8 W . kg(-1)) and NWa (30.4+/-6.6 W . kg(-1)) at POST. No significant di fferences were observed between Wa and NWa in both FG% and FT% however , an 8.1 % decrease (p > 0.05) in FG% was seen between the first and s econd half during NWa. Although the decreases in anaerobic power and F G% did not reach significance, the results suggest that the combinatio n of high intensity, moderate duration exercise, and fluid restriction might be detrimental to performance.