The purpose of this thesis was to measure certain anthropometric characteristics and run tests on the flexibility of the shoulder joint in young water polo players to determine which of these tests show the greatest correlation between velocity and the basic throw in water polo.
The research was carried out in June and July 2018, at the 15th Water Polo Games at the Ljubljana Slovan club. Water polo players were from three age groups: U15, U17 and U19. They were selected according to their quality and successful performance in the game.
By means of a scale and measuring body height, both basic anthropometric variables were measured including weight (TT) and height (TV). The long measurement helped to measure arm span (RR). This test served to normalize the overhead stick rotation. The short measurement served to measure the movement of the shoulder while lying face down. The angle size of the external and internal shoulder rotation was measured using the Kinovea program from performance images. The shoulder mobility test involved the contact of the palms behind the back and was the final test in the gym. While the player sat in a chair the contact of the palms behind the back were photographed in their final position. The success of the test was determined according to the pre-set scale. The velocity of the ball using the basic throw with a continuous swing was measured by radar at a distance of 7 meters.
It was confirmed in our research that only anthropometric variables correlate with the velocity of the basic throw. Other tests of mobility demonstrated no correlation. Also, when anthropometric variables (arm span and body height) were used as control variables (covariates), no statistically significant correlation was found. In conclusion, we confirm that the results of the tests of the mobility of the rotator cuff on our sample of water polo players 14-18 years of age demonstrated no correlation with the velocity of the ball using the basic throw.
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