The purpose of this study is to investigate the mechanics of Kendo activity, and to compare the striking technique of male Kendo players with that of female Kendo players.
A force platform was used together with 16mm cine camera to investigate synchronously the mechanics of step-in motion during the striking movement in Kendo activity.
The records of the force components of foot impact on the floor of the male and femal Kendo players were obtained from the step-in motion during striking movement. Subsequently, the records were corresponded with the body movements shown on the 16mm film.
The subjects for this study were 16 males,21 to 37 years of age,9 to 26 years of experience and 4 to 7 dan degree, and 6 Tsukuba University female students,18 to 21 years of age,6 to 11 years of experience and 3 to 4 dan degree.
The results obtained were as follows:
1. The maximum magnitude of foot force acted on the platform with step-in motion showed rightward, backward and vertical impact at the early stage of the foot contact with the floor at shomen-uchi, and showed rightward, forward and vertical impact at kote-uchi.
The pattern of force components were almost the same both in male and female Kendo players.
2. Comparing the peak magnitude of vertical force (Fz) of male Kendo players with female Kendo players, the former showed larger value than the latter. (Fz Shomen-uchi; male 13.1, female 9.36, Kote-uchi; male 11.4, female 9.04)
3. The holizontal velocity of the center of gravity and the vertical velocity of the right knee point of male Kendo players are faster than those of female Kendo players.
After the contact of the right foot on the floor, larger positional difference of the center of gravity in vertical direction was found in female Kendo players than male Kendo players.
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