Abstract
The purpose of this study is to measure a duration required for defense and furthermore, to investigate the factors which govern an achievement of defense in Kendo.
Eleven University Kendo players were employed as subjects. Action potential from biceps brachii and triceps brachii of the right arm and a strain of shinai generated at strike were recorded. Time elapsed from initiation of action potential up to the strain of shinai is regarded as duration for defense. There is no difference in the duration required for defense due to the level of skill. Therefore it is supposed that there are more important factors than duration of defense action as to the achievement of defense in Kendo.
