A Comparative Study on Kinematic Performance of Corner Kicks for Junior Soccer Players According to Ball Rotation towards Effective Areas in Front of the Goal

among kinematic properties such as displacement and linear velocities and angles and angular velocities during performing corner kicks for Junior Soccer players with techniques of ball rotation towards the goal in the close post area and to the contrary of the goal in the rear area at the moment of launching the ball. The study was carried out on (3) Junior players from Al-Sharkia Sporting Club under (18) years who were the best in playing corner kicks according to the test of corner kicks performance precision to specific areas in front of the goal with the right foot. (10) Trials were shot with video for each technique. To measure the precision of corner kicks according to ball rotation towards the goal technique the researcher depended on the test of the precision of passing the corner kick in front of the goal. Kinematic parameters were determined by using Simi Motion Program for motor analysis designed to track and to analyze the motion. Results indicated that there are significant differences in Displacements and linear (horizontal, cross and vertical) velocities of some body parts and the ball during performing corner kicks for the close post and beyond area according to ball rotation technique at the moment of launching the ball, and there are significant differences in Angles and angular velocities of body parts during performing corner kicks for the close post and beyond area according to ball rotation technique at the moment of launching the ball