The purpose of this study was to determine if there are any correlations between muscle power of the upper and lower extremities using the peck-deck exercise and leg press with throwing velocity using two different techniques (T1: throwing with initial support of the ball in the water; T2: throwing with double feint), the height and maintained height of jumping and anthropometric characteristics in 9 players from the Catalan water polo team (16.8 \u00b1 0.8 years, body mass 73.5 \u00b1 7.2 kg, height 184.7 \u00b1 7.9 cm and BMI 21.5 \u00b1 1.3 [kg\u00b7m-2]). The results indicate that although there is no statistical significance there is a tendency toward moderate correlation between the maximum power in the peck-deck exercise and maximum throwing velocity with both techniques (r = 0.50 p > 0.05 and r = 0.66 p > 0.05, technique 1 and technique 2 respectively). The correlations between maximum leg press power and the maximum height and maintained height of jumping were low and not significant (r = 0.31 p > 0.05 and r = 0.00 p > 0.05 respectively). Finally, we found that anthropometrically weight, size and muscle weight correlated with mechanical power on the peck-deck machine (r = 0.867 p < 0.01); (r=0.71 p< 0.05); (r = 0.86 p<0.01) respectively.\u00a0<\/p>\n\n