A KINEMATICAL COMPARISON OF TENNIS SERVICE IN VOLLEY BALL BETWEEN INTERUNIVERSITY AND INTERCOLLEGIATE MALE VOLLEYBALL PLAYERS

<p>The purpose of this study was to compare tennis service in volleyball between male interuniversity and intercollegiate players. Twelve (6 Intervarsity and 6 Intercollegiate level) volleyball players were selected as the subjects for the study. The mean age, height and body mass of intervarsity players were 23 years (± 2.28 years), 177.77 cm (± 5.43 cm) and 64.67 kg (± 5.95 kg), respectively, whereas intercollegiate players were 21.33 years (± 1.71 years), 166.5 cm (± 3.30 cm) and 63.17 kg (± 4.93 kg), respectively. All subjects were right-handed volleyball players. The players were allowed to have warm-up and trials. Each subject was asked to do the tennis service. Three services were recorded from one side of the body with a high speed camcorder (Canon Legria HF S10) operating at 1/2000 Hz with a frame rate of 60 frames per second. Data were collected from the movement onset until the ball crosses the net. The camcorder was placed on a tripod at the height of 5 feet on the right angle of the subjects at a distance of 10 meters away to the side-line. Recorded data were digitized with the help of Silicon Coach Pro-7 motion analysis software. The selected biomechanical variables were: the ball height, shoulder joint angle, elbow joint angle, wrist joint angle and ball velocity. The t test was used for statistical analysis of the data by using SPSS-18 version software. The results revealed insignificant differences between intervarsity and intercollegiate level male volleyball players in their shoulder, elbow and wrist angle, ball height, ball velocity and hand velocity.