Fatigue Impact to Mechanical Movement of Maximal Instep Kicking in Soccer

Abstract

The fatigue factor can restrict and disrupt the player’s decision-making and also obstruct player’s cognition during the match. It is found that fatigue can decrease the speed of the ball while kicking after being trained (protocol fatigue training). Meanwhile, another finding comes out different that the speed of the ball doesn’t change significantly while playing in simulation match. The purpose of this study is to find out more comprehensively the level of fatigue to the change of movement’s mechanism that occurs in instep kicking technique. The method used in this study is quantitative descriptive. The independent variable consist of fatigue index levels (normal and maximum). Meanwhile, the dependent variables are the momentum of the ball, ground reaction force, and impulse. The result of the study shows that there is a significant difference in the speed of the ball between normal condition and fatigue. Furthermore, the result of Ground Reaction Force (GRF) and impulse shows significant difference.