1900年前後における剣術の体操化過程にみる胴技の変容：小沢卯之助らの武術体操法に着目して

抄録

  This study examines the transformation of the do-waza (techniques for striking the opponent's torso) in kenjutsu motivated by a philosophy of physical education rooted in medical rationalism. This transformation was initiated with the goal of fostering balanced physical development. The study materials were do-waza-related descriptions in representative kenjutsu manuals published around 1900, and handed down from person to person. Through examination of do-waza in modern Japan, it was concluded that bujutsu-taisoho (martial art exercises) were introduced and endorsed by Unosuke Ozawa, Kenzo Nakajima, Tokuichiro Nakano, and others in their attempt to incorporate kenjutsu teaching materials into regular physical education in schools. This was the point when standard kenjutsu instruction techniques shifted from one-to-one to group-exercise instructions.
  Results obtained in this study can be summarized as follows:
  1.  The core contents of do-waza in representative kenjutsu textbooks published between 1884 and 1897 only describe methods for striking the migi-do (right do or right torso) but not the hidari-do (left do). Shingoro Negishi (1884) states that it is better to strike the migi-do in preference to the hidari-do, while Daijo Kameyama (1895) and Minoru Yoneoka (1897) state that only migi-do strikes are rationally acceptable from a technical perspective, whereas hidari-do strikes are strictly unacceptable.
  2.  Between the late 1890s and 1900s, Unosuke Ozawa, Kenzo Nakajima, and Tokuichiro Nakano developed the bujutsu-taisoho with the aim of implementing bujutsu (martial arts, i.e., kenjutsu) as part of the regular school curriculum. This became a key opportunity to shift kenjutsu instruction from one-on-one to group instruction. Simultaneously, the training came to present do-waza methods for striking both the migi-do and the hidari-do (Ozawa, 1897; Shizuoka Prefecture Teacher's School, 1902; Nakayama and Nakano, 1906).
  3.  The do-waza in the bujutsu-taisoho as proposed by Ozawa, Nakajima, and Nakano effectively gave hidari-do strikes, which had been previously rejected in the field of kenjutsu, equal standing with migi-do strikes, with the aim of achieving balanced physical development on both sides of the body. The motivation for this revised do-waza was a physical education philosophy founded upon principles of medical rationalism.