著者

山田 佳弘

出版者

身体運動文化学会

雑誌

身体運動文化研究 (ISSN:13404393)

巻号頁・発行日

vol.14.15, no.1, pp.47-59, 2009-09-30 (Released:2022-03-31)

参考文献数

15

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The students in the class are primarily beginners of Kyudo. The method of implementing time limitation has been used mainly with these students. Recently, some of the students could not improve their techniques. For beginners, one of the reasons for difficulty or lack of improvement is due to the difficulty in making the “Kai" form, which is the maximum drawn position of a bow. To make the “Kai" a strong physique is needed. “Kai" is the form when the shooter is standing before shooting an arrow. The resistance of the bow becomes greatest in “Kai". One of the reasons for Kyudo's difficulty is that the resistance of the bow is a big load for the body. Kyudo requires muscle sense. Beginners cannot readily learn this sense. Learning this skill is particularly difficult because there is a limitation on the number of classes at university.Due to these time constraints, coaching methods were developed for these beginning students to teach them all at once a number of skills. “Yatsuka-Himo" was adopted as the teaching method for classes. “Yatsuka" is the reasonable length that each person pulls a bow at “Kai". Beginners can learn “Kai" with these materials and expect immobilization. “Yatsuka-Himo" utilizes a hemp string and makes rings to the build of the user's physique. The student uses a “Yatsuka-Himo" rings with both thumbs. The student practices the shooting method and enlarges the rings of the string with both thumbs. The completion of the “Kai" form was made with the rings of the string stretched with both arms. The beginner can learn the form from an initial stage by using “Yatsuka-Himo". It was noticed students who had used “Yatsuka-Himo" tended to have a more complete, balanced form than students who did not use it. Based on the questionnaire given to students it was found that there was value in having student use “Yatsuka-Himo."

著者

山田 佳弘 原 英喜

出版者

身体運動文化学会

雑誌

身体運動文化研究 (ISSN:13404393)

巻号頁・発行日

vol.8, no.1, pp.39-53, 2001-03-31 (Released:2022-03-31)

参考文献数

16

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We studied Kyudo shooting performances from the viewpoint of coordination between movement and respiration. Three university male students voluntarily participated in our experiments. Each student, equipped with respiratory measuring devices, shot five arrows in a row. Respiratory responses were picked up by thermal sensor and pressure gauge attached to their nasal cavities. They were tested before and after two years of practice. We recorded their performances on videotape and then overlapped them with respiratory curves and arrow release curves. After these experiments, we recorded those analog curves on paper and analyzed the differences between each subject's pre and post two years practice.Respiratory frequencies from starting motion to release point of one shot decreased after the two years practice in all subjects, espccially the unskillful one. As well, the amplitude of ventilation volume decreased. The skillful subjects synchronized their respiration with their shooting movements. They started inhaling and the moment they began their shooting motion. By using the pressure gauge more than thermal sensor,we found short and strong exhaling immediately after the release of arrow.