For the purpose of determining the technical characteristics of the striking motion from Nito-no-Kamae in Kendo, we measured the impact force of the striking motion with DAITO (long-shinai) and SHOTO (short-shinai) using as subjects three male university teachers, who are majoring in Kendo, and analyzed the data by a motion analysis system with a video tape recorder.
For comparison, similar measurements were performed on the striking motion with the two-handed striking motion from Chudan-no-Kamae and the one-handed striking motion from Jodan-no-Kamae.
The following results were obtained from a examination of the data.
1. The maximum downward magnitude of the impact force and the downward impulse value of three kinds of the striking motions with SHOTO from Nito-no-Kamae were greater than that of the two-handed Shomen striking motion from Chudan-no-Kamae. However, the maximum downward magnitude of the impact force and the downward impulse value of two-kinds of striking motion with DAITO from Nito-no-Kamae were smaller than that of two-handed Shomen striking motion from Chudan-no-Kamae.
2. The impact time of all the striking motion from Nito-no-Kamae were shorter than that of the two-handed striking motion from Chudan-no-Kamae.
3. The motion of shinai in the striking motions from Nito-no-Kamae were chiefly made using the left elbow and the left wrist.
4. The angular velocity of shinai immediately before impact using Hikikote striking motion with SHOTO of Nito-no-Kamae was the largest, and that using the Shomen striking motion with DAITO of Nito-no-Kamae was the smallest.
