Hokushin Ittō-ryū
Shūsaku Narimasa Chiba , founder of the Hokushin Ittō-ryū Hyōhō (北辰一刀流兵法), introduced "gekiken" (撃剣) (full contact duels with bamboo swords and training armor) to the curriculum of tradition arts in the 1820s. Due to the large number of students of the Hokushin Ittō-ryū Hyōhō at the end of the Edo period, the use of bamboo swords and armor as a form of practice became popular. Modern kendo techniques, such as Suriage-Men and Oikomi-Men, were originally Hokushin Ittō-ryū techniques, were named by Chiba Shūsaku. After the Meiji Restoration in the late 1800s, Sakakibara Kenkichi popularized public "gekiken" for commercial gain, resulting in increased interest in kendo and kenjutsu.