Jump serve performed by volleyball players of different qualifications

Background and Study Aim. An important component of volleyball competitive activity is to obtain statistics on the performance of the jump serve. This allows the coach to decide on the appropriateness of its use in different moments of the game to obtain optimal results. The purpose of the work is to determine the indicators of the effectiveness of jump serve by volleyball players of student teams. Material and Methods. The analysis of statistical data obtained as a result of pedagogical observations of the performance of jump serve. Volleyball players (aged 17-21 years) were monitored during the competitions. 8 games with the total number of jump serve 410 were selected for analysis. Results. The corresponding indicators of efficiency of jump serve depending on number of a zone of a playground are defined. The efficiency of serve and different zones was the following: in zone 1 - 34.9%; in zone 5 - 31.1%; in zone 6 - 23.6%. Zones 1 and 5 have been determined to be the most vulnerable to the opponent’s defensive actions in the jump serve. It was shown that the jump serve significantly reduces the chances of the opponent to attack effectively. Conclusions. The results can be used to solve the problem of improving the efficiency of jump serve in the training and competitive activities of student teams. It is recommended to use the jump serve in the first two games, when its effectiveness reaches its maximum values. It is also recommended to direct such a serve to the playground zones 1 and 5. It is necessary to find ways to improve the technique and accuracy of the jump serve and increase its efficiency in competitive activities.