Calculation of standard degrees of accuracy and speed of transmission from the top and its relationship to some biomechanical indicators at the moment of hitting the ball among junior volleyball players

Abstract

The study aims to find standard degrees to measure the accuracy and speed of serve from the top and its relationship to some biokinetic indicators at the moment of hitting the ball. As for the research problem, when the two researchers were briefed on a lot of research, as well as scientific references and personal interviews with specialists and coaches, it was noted that there are few tests that are compatible with the development taking place in the performance of volleyball skills, including the skill of serving from the top, which plays a clear role in deciding the outcome of the match due to its accuracy.  The speed of performance, which prompted the two researchers to build a test for the accuracy and speed of transmission from the top, and to study its relationship to some mechanical indicators at the moment of hitting the ball. The research community consisted of (136) players. As for the research sample, the research sample was divided into two parts, namely, the construction sample and the rationing sample. The two researchers reached a number of conclusions, the most important of which was the finding of standard degrees of serve skill from the top, and the researchers came out with these recommendations. The importance of the tests It is used under consideration, where players must be encouraged to develop it to high levels of performance and use the standard and criteria in the evaluation to recognition a state of weakness to avoid it and enhance strengths