Etude Corrélative Entre Quelques Variables Biomécaniques De La Trajectoire Du Ballon Et La Précision Du Tir Coup Franc Direct Dans Le Football.

Abstract

The aim of this study is to define the nature of the correlation between some biomechanical variables of the ball trajectory affecting the accuracy of the direct free kick in football, by hypothesizing that there is a statistically significant correlation and a significant contribution rate between these variables. The sample consists of five (5) senior semi-professional players (Age: 22.8 ± 2.59 years, Experience: 12.4 ± 1.86 years, Weight: 67.8 ± 4.27 Kg, Height: 1.75 ± 0.04 m), the data collection instrument is an accuracy test of direct free kick shot on three (03) different positions (Right, Center, Left) over a distance of 20 m. The results revealed that there was a statistically significant correlation between the accuracy of the direct free kick and the flight time (p<0.05) with a contribution rate of 61%, the angle of flight (P<0.05) with a contribution rate of 37%, and ball velocity (p <0.05) with a contribution rate of 63%, and ball acceleration (p<0.05) With a rate of 62%, the amount of movement (p<0.05) with a contribution rate of 63% and kinetic energy (p<0.05) with a contribution rate of 62%.