تصميم جهاز مساعد لقياس دقة اداء الاعداد في كرة الطائرة

Development remains a feature of this era, and you see every day new means and techniques appear that try to make human life easier and easier. This development is not limited to one field, but includes all areas of contemporary life. , which focuses in the field of means and devices as well as tests through modern means that are used in the process of testing and measurement alike, all in order to obtain better results and in an accurate manner for realistic knowledge of performance and thus this diagnosis leads to the development and progress in the physical qualities or skills to be developed In a way that achieves the economy with effort, time and material capabilities, and that these means differ according to the type of activity or game for which they are developed and according to the specificity of the skills of those games, and volleyball is one of those games that are characterized by basic and important skills that most parts of these skills are based on accurate scientific foundations, The form and accuracy of performance control to a large extent to identify and resolve many critical situations in matches through the player’s special positions in the skill of preparation on the field. an‎d this basic skill, which is no less important than offensive skills, “as taking the appropriate and correct stance is one of the most important requirements for successful performance” (1), and if the prepared player is able to detect defensive weaknesses in the opposing team, he achieves direct points for his team, The preparation process and its accuracy in volleyball are as important as the offensive because preparing the ball in the correct and accurate manner for the attacking player achieves success in ending the attack correctly (2). The state of accuracy in such a skill is difficult to be measured by a non-objective means, as the observation of the movement in an abstract way does not give the ability to evaluate accurately due to the speed of movement and the lack of time taken to perform it, the diagnosis may not be an accurate scientific evidence and the delivery of the ball may be To a point in the wrong height by the preparer, but the attack ends correctly, as it does not depend on the accuracy of the preparation, but depends on the ability and skill of the attacking player to finish this attack according to the required level. From the foregoing, the importance of research is evident in the researchers’ attempt to contribute to finding scientific aids that work on diagnosing the accuracy of the preparation skill for volleyball players in the Premier League in the southern region, in addition to that this device may be one of the important and useful tests in the hands of our coaches who supervise the training of teams Juniors and school and college teachers in volleyball to seek knowledge and develop the accuracy of preparation for volleyball players.