The purpose of this study is to clarify the effect of Kuzushi in Judo Nagewaza from the status of Uke by analyzing Nagenokata. Therefore, Like's center of gravity, changes in the support base and the angles of the leg joints were compared at the time of Shizenhontai and at the end of Tsukuri. As a result, of this study, the followings was clarified.
. At the end of Tsukuri, Uke's center of gravity was higher and completely out of the support base.
2. It was found that there was relationship between the change in the support base and the direction of Kuzushi. In Kuzushi to Mamae, the distance between the toes and the heel had shortened greatly. In other words, Uke had moved into an unstable condition in the back-and-forth direction. In Kuzushi to Maesumi, in addition to the preceding the distance between the right toes and the left toes had also shortened greatly. This means that not only the back-and-forth direction, but also the right-and-left direction is unstable.3. It was found that there was relationship between the change in the angles of the leg joints and the direction of Kuzus. hi. In, Kuzushi to Mamae, a great change was seen in the metacarpophalangeal (MP, hereafter) joint angles of the right and left sides, and in the ankles. However, no great change was observed either in the knee angles or the hip joint angles. In other words, Uke stood on tiptoe without leaning the body. In Kuzushi to Maesumi, the changes were seen in the MP joint angles of the right and left sides, left ankle angle, right knee angle and hip joint angles of the right and left sides. This means that the body leans in the direction of Kuzushi, which results in standing on noe's toes
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