تحليل أهم المتغيرات الكينماتيكية لحظة بداية مرحلة اداء الرمي وعلاقتها بالإنجاز في فعالية رمي الرمح للمتقدمين

Abstract

Given the lack of connection between kinematic variables with the sports training process during training of players or in competitions, which can lead to the loss of a large amount of effort and time for athletes during javelin throwing, and in order for the athletes to reach the high level of the competition and achieve a good number during the competition, so training has become It is built on scientific and mechanical foundations, which are a distinctive feature of modern training, especially with regard to kinematic variables and mixing them with the science of training to reach the best levels. As many scientific researches and studies have confirmed the existence of an important relationship between the kinematic variables during the stage of the moment of javelin throwing performance and the digital achievement achieved, as well as between achieving results in sporting activity as a result of the athlete’s performance in the javelin throwing event, and here lies the research problem. Through the researcher’s follow-up, he noticed a discrepancy. There was a significant weakness in the values ​​of some kinematic variables at the moment of throwing performance during the players’ performance during throwing competitions or in the training process and the failure to invest in these variables, which led to a decline in the level of required digital achievement, despite the fact that kinematic variables play a prominent role in the players’ selection of any of the athletics events. Therefore, these variables play an important role in improving performance, because the javelin throwing event deals with angle, acceleration, and speed. Dealing with them has become very necessary. Therefore, coaches must use the best training methods and techniques to achieve their goal and know the weak areas of the competitors by photographing the technical performance of the event through... Analysis of throwing players with numerical achievement during the moment stage of throwing performance so that it becomes an ideal model through which it can be analyzed and the relationship between it and achievement found, as well as finding the contributing percentage of the kinematic variables that contributed to achievement during the performance of this technical stage of the javelin throwing event and thus helping to give a specific number of units. Training, which is compatible with these percentages achieved during the players’ performance, identifying the relationship between the values ​​of the most important kinematic variables at the moment of the beginning of the throwing performance phase and their relationship to achievement in the javelin throwing event for applicants, and identifying the percentage contribution of the values ​​of the most important kinematic variables at the moment of the beginning of the throwing performance phase and their relationship to achievement in the throwing event. The javelin. As for the research hypothesis, there is a discrepancy in the proportions of the contribution of the most important kinematic variables at the moment of the beginning of the throwing performance stage and their relationship to the achievement in the javelin throwing event for the advanced students. As for the community, they are an elite group of some of the national team players in the advanced javelin throwing event, and they number (4) players, as they were chosen by the method Deliberate, so that the sample represented 100% of the research community. The researcher gave (10) attempts to each player when performing the event, so that the total number of attempts became (40) attempts or views for all players. Statistical operations were conducted using (SPSS). The researcher concluded that there A high significant correlation for the variable under study (the height of the starting point at the moment of throwing) during the stage of the moment of javelin throwing performance and the achievement among the kinematic variables for the stage of javelin throwing. The recommendations emphasize attention to the variables (angle of launch, speed of launch, angle of inclination of the torso back at the moment of throwing, speed). surroundings for launching, the time of the throwing phase) and according to the nature of its work because it has a great influence on determiningthespear’sflightpath