A comparative study in the values of some biomechanical variables to perform the skill of the moving blocking wall on the far side of the attack center for the volleyball players of Dhi Qar Governorate clubs

Abstract

The importance of the research lies in obtaining accurate scientific information through the bio kinematic analysis of the performance of the mobile blocking wall to know the aspects of strength and weakness in performance as well as knowing the levels of values of the bio kinematic characteristics exerted that are commensurate with the nature of the performance of this method in order to improve the technical performance of this skill and the statement of the values of its bio kinematic properties for the purpose Advancement of skill performance requirements according to the bio kinematic foundations in line with the motor duty, and the research problem was manifested through the lack of bio kinematic information about the method of performing the skill of the blocking wall on the far side of the center of the attack followed in the blocking wall, as well as the lack of the values of the most important bio kinematic variables for this method, which differs in the values of its variables Between the players and the difference, we find that there is a contradiction in opinions about this method because it was not subject to scientific and practical experience by following the bio kinematic approaches to study skillful performance, including the entrance to distances, angles, speeds, heights, and the change in the amount of movement in addition to other biomechanical variables. The research aims to identify the values of some biomechanical characteristics The performance of the moving blocking wall in the side far from the center of the attack for the players of clubs in Dhi Qar Governorate (first degree) in volleyball Centers (4) and (2), and the research hypothesis was the presence of statistically significant differences in the values of some bio kinematic characteristics of the performance of the moving blocking wall in the side far from the center of the attack for the players of Dhi Qar Governorate clubs (first degree) in volleyball between centers (4) and ( 2), the researcher used the descriptive approach in a comparative manner, because it is the most appropriate method that achieves access to the research objectives.