الملخص

Recognizing the values of the biomechanical variables of the Arab champion and the world champion in the skill of the inverse fist( gyakeu-zuki) in Karate . Revealing the differences in the values of the biomechanical variables between the Arab champion and the world champion in the skill of the inverse fist (gyakeu-zuki) in Karate . The researchers have hypothesized the following : The presence of differences in the values of most biomechanical variables between the Arab champion and the world champion in the skill of the inverse fist (gyakeu-zuki ) in Karate . The researchers have adopted the descriptive comparative methodology for its convenience with the nature of the research . The sample has consisted of the Arab champion ,the Iraqi player (Qusai Wisam ) and the world champion ,the French player (Alex Biamonti ) .The Arab championship in Egypt has been analyzed in 2006 and the world championship in Japan in 2008 .The biomechanical variables have been analyzed ( corners , heights , displacements , times , speeds , and capability ) . The researchers have concluded : The presence of differences in the values of the biomechanical variables between both players ,and as follows : The corners were ( the foreground knee , the back knee , and the elbow of the beating arm ) for the benefit of the world champion . The heights of the beating fist and the maximum height of the foreground foot were for the benefit of the world champion .While ,the height of body mass weight centre for both players was convergent . The displacements ( horizontal , columnar , the result of the body mass weight centre , and the horizontal displacement of the foreground foot and back foot ) were for the benefit of the world champion . The kinetic trajectory of the beating fist of the world champion was better than the kinetic trajectory of the beating fist of Arab champion .   The researchers have recommended the following : Encouraging the trainers to develop the technical performance of the fighting skills in karate via adopting the kinetic analysis of the players from time to time . Developing the physical endurance ( force ,speed ,and performance fitness ) to make the players access high levels quickly . Confirming studying other skills of the fighting activities ,like karate.