The purpose of this study was to investigate the relationship between right/left Kumite (grip domination) of Judo and upper and lower limb function. The subjects were 161 male and 93 female of the Japan national team and 1238 boy and 1290 girl judo players who participated in a national junior high school judo tournament. Only right-handed players were selected. Fitnesscheck items with the right and left limbs were analyzed. 1. Grip strength and Kumite in junior high school players: The mean value for the right hand showed higher than the left hand in the grip strength regardless of Kumite. It seems to be influenced by the dominant hand 2. Dumbbell Snatch and Kumite in national team players: The mean value for the right arm were significantly higher than the left in the right Kumite, on the other hand, there was not the right/left differences in left Kumite. The muscular power of Tsurite side was stronger than that of Hikite side. It seems that these factors are strongly influenced by Judo training. 3. One leg jump to four directions in national team players: There was no right/left difference in both sides of Kumite. Similarly, a difference was not seen between the support leg and non-support leg regardless of the technique type. It was suggested that the function of upper limbs have influenced by dominant hand and the form of Kumite. The relationship between Kumite and the function of lower limbs was not able to be clarified.
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