Reaction Times of The Gyaku- and Kizami- tsuki in female collegiate karate athletes : Analysis from ground reaction forces and kinematics

Abstract

J-GLOBAL ID : 201101073728331279J-GLOBAL ID : 201801007052633411J-GLOBAL ID : 202201012804701108J-GLOBAL ID : 201801009314123820J-GLOBAL ID : 202101004237845144The purpose of this study was to analyze the kinematics and kinetics of how karate players respond to LED light stimuli and opponents when performing kizami- and gyaku-tsuki. The effects of the distance between the attacker and the opponent, and the differences in event types and levels on the reaction time were also examined. Thirteen female university student karate athletes （kumite international level：n＝2, kumite college level：n＝6, kata：n＝5） participated in this study. Fourteen motion capture cameras and three force plates were used to record kizami-tsuki and gyaku-tsuki movements to LED light stimuli and the opponent. Kinetics and kinematics analysis showed no difference in reaction time to LED light stimuli among kumite, kata, and competition levels, but international level kumite athletes tended to have the shorter reaction time to opponent's movements. In conclusion, our results suggest that international-level kumite players have an excellent ability to predict and judge the movements of their opponents.1520297128939472640application/pdfdepartmental bulletin pape