剣道の指導法に関する一考察 : 「正面素振り」の空間打撃動作について

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  • ケンドウ ノ シドウホウ ニ カンスル イチ コウサツ : 「ショウメン スブリ」 ノ クウカン ダゲキ ドウサ ニ ツイテ
  • Kendo no shidoho ni kansuru ichi kosatsu : "shomen suburi" no kukan dageki dosa ni tsuite
  • A suggestion for the coaching method in the frontal wielding exercise in kendo, with a special focus on the final positioning of 「shomen-suburi」

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Abstract

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The frontal wielding exercise (Shomen Suburi) is an essential exercise for Kendo players to learn correct shinai maneuver and hitting movement. Here, by looking at the electric discharge map of the body muscles, we shall com-rare the two representative methods in the frontal wielding exercise. In Method A, a player finishes his swinging movement when his right fist reaches the right shoulder's height. In Method B, the right fist is to halt at the chest height, with shinai's tip (Kensen) at the height of the crown of the player's head, allowing maximum stability of he upper body and power at shinai's tip. The reacting time and the amount of muscular electric discharge, along with the speed of shinai's tip, show that for both beginning students and experienced players the Method B is a more preferable choice. Once the "left" fist is also given the due attention to fully complete its swinging movement, he body muscles can yield the most efficient striking power and the whole hitting movement becomes remarkably smooth. Because players can perform frontal wielding exercise casually without partners, and because it provides basic training for all Kendo players regardless of their experience, the teaching of the "correct" method is crucial. A study by Fukumoto et al. (1982) reports the most efficient, relaxed strikes are achieved after a rapid, hard exercise and brief rest. Our hope is that regular practice by the Method B will guide players to strike efficiently without excess energy. The fists must be positioned at the correct height at the end of wielding movement, and the chest height for the right fist is most appropriate. Method B is also the best in simulating the confrontation in real matches and we must necessarily conclude it is well suited for coaching in contemporary Kendo.

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