علاقة بعض المتغيرات الكينماتيكية بدقة الإرسال الساحق عند الهبوط قبل الخط الخلفي للملعب لدى لاعبي الكرة الطائرة

Abstract EN

The idea of this thesis summarized the study of some mechanical data for the player and the ball during performing of smash in volley ball in the light of new amendments of volley ball rules in order to know the most mechanical data that have appositive affect upon the technical performance of the players to serve the technical performance and take their advantages to direct the training and develop the technical act of smash.

The perfect way in studying the activity is the analysis of the data that affect the activity in all its parts in order to make them clear to the coach and player and correct the activity by finding out weak points and power