The effect of resistance exercises on some bio kinetic variables of volleyball smashing skill

Abstract

The game of volleyball contains many basic skills, both defensive and offensive, that lead the team to victory if the team performs it well and quickly. The transmission is one of the decisive offensive skills, as through it a direct point can be obtained, and as a result of the development in the skill performance in this game, experts and trainers have sought to find ways and training methods to develop this skill. Hence, the importance of research lies in that resistance training helps the player perform movements Under changing and different conditions, so that the player is able to face the various conditions and situations that he is exposed to during the game runs well, as well as developing the values ​​of the force-time curve for the player, to reach the best biomechanical conditions and thus develop the smashing transmission, and the research problem was that improving the level of skill performance For volleyball players, as well as taking into account the mechanical factors associated with performance in the field of sports training constitutes one of the scientific foundations that increase the development of achievement and performance for most volleyball skills, and through the researchers’ observation of the kinetic analysis of the skill of overwhelming transmission for some teams and specialized centers for young people that there is a weakness in the performance The player sent during the skill stages, specifically the payment stage, and this is because of not taking the correct position for his pivot point, which leads to The cause of a loss of balance and an increase in the amount of effort exerted during the approach phase, and this may be the result of a weakness in the internal strength represented by the torque strength of the body parts involved in the performance of the pivot and thrust moments, causing mechanically undesirable bends in the relative angles of the knee joint, so researchers decided to study this The problem is through the biomechanical analysis of the crushing transmission and the development of resistance exercises that want to raise the level of muscle strength and skill level towards the best. The pre and post tests of the control and experimental groups of the curve of biokinetic variables for the skill of smashing serve in volleyball, and the identification of the statistical differences between the control and experimental groups in the post test of the curve of the biokinetic variables of the skill of smashing serve in volleyball, where the research hypotheses were there is a percentage of development and statistical differences between the test with significant significance Pre-poster for the two control groups There are statistically significant differences between the control and experimental groups in the post test in the curve of biokinetic variables for the skill of smashing serve in volleyball and in favor of the experimental group. (experimental and control), the research community included the young players in the specialized center for volleyball in Shatrah district whose ages ranged from 16-18 years for the season (2020-2021) and who represented the youth category and numbered (20) players, (6) players were selected for the sample The survey was selected (14) players representing the research sample at a rate of (70%) of the original community, and the sample was divided into the two control and experimental groups in a deliberate way (to ensure the distribution of players to the two groups according to heights and playing centers) and each group contains (7) players. One of the most important conclusions is that the use of resistance exercises gave a clear picture of its preference over the traditional program, through the results shown by the total One of the most important recommendations is to adopt resistance exercises in the training units because of their effective impact in developing the biokinetic variables for the skill of crushing transmission.