The purpose of this study is to clarify the morphological characteristics and physical fitness of the Judomen in comparison with the Kendomen. Then, we are studied on the morphological and functional characteristics by the difference of their favorite technique and fold type. Twenty six the university Judomen, thirty two Kendomen, aged 18-20 years were chosen as experimental subjects. The results were as follows; (1) In the morphological measurement, the Judomen elicited the larger value in the width, girth and weight measurement than the Kendomen. (2) In the physical fitness test, the Judomen elicited the higher value in the back strength and sit-up than the Kendomen, but the trunk extension was showed the lower value. (3) The Judomen has a tendency to the forward and down of their right shoulder. (4) To observe the moire relief change on the body back surface, the subject of two top point in scapular region was showed to the obesity Judomen, but one top point looked at the slender body subjects. We were divided three types of hip relief from the topographical viewing of hip region to the morphological measurement and physical fitness than the parallel and eight figure type. (5) It was found that A-group (favorite technique of one foot) was observed the larger value than B-group (favorite technique of two foot). Then, the special feature of A-group made observations in the one foot standing test with closed eyes and that of B-group showed in the leg strength. (6) It was not significant the difference by the hold type.
Ukemi movements against migi-tsurikomigoshi were analyzed by 16 mm kinematography and acceleration transducer in order to obtain some informations usefull in effective instruction of Ukemi in Judo. Movements of Ukemi were considered all complete with in approximately 0.3 sec. There found `pronounced discrepancies between the recorded values and the values claimed by the subjects in their feeling as to the time of completion, sequence of the body parts hitting the mat, and the angle formed between the. arm and the side of the trunk. Subject T. T. whose performance in Ukemi was rated excellent, registered a double hitting on the mat with his left arm which reduced the landing shock to the neck markedly. The highest angular velocity of his neck was 530°J sec. Subject Y. S. whose Ukemi performance was rated very poor, showed pushing movement against the mat rather than the hitting movement in his left arm. The landing shock to his neck was great, as recorded in the angular velocity of his neck which reached 1260°/sec. It was concluded that: (1) avoidance of the confusion between the mechanical phenomena actually took place and the subjective feeling of the performance is necessary; (2) function of absorbing the impact with viscosity and elasticity must be considered; in order to improve the effectiveness of instruction in Ukemi.
66 universities in Kanto,3810 members of KENDO club were investigated into their Alma Mater. The results were as follows. 1. Generally the member of KENDO practitioners was in close relationship with the social and economical level of the prefecture. 2. But Kyushu and Shikoku, in spite of their lower level, showed high ratio in the number of KENDO club members at high school and they also have many famous KENDO clubs. 3. And also many KENDO students from these prefectures have come to Kanto to study at the universities of Kanto. 4. The students from famous high school KENDO clubs make about 10% from the number of the famous university club members.
The purpose of this study is to clarify the morphological features and characteristics of the standing posture of the Kendomen in comparison with the Judomen and non-athletes. We studied on the changes of the relief of the back during various standing posture with the aid of moire contourography. And also, we studied on the vertebral column by the conformateur and the perpendicular line of the body gravity center by the gravianalyzer. The subjects for this study were thirty four Kendomen, twenty six Judomen and twelve non-athletes, students of Tsukuba University, aged 18-20 years. The results were as follows: 1) In the girth of the upper limb and the forearm of the Kendomen, a striking contrast between right and left was observed. 2) The right shoulder of the back of the Kendomen had a tendency to be in the front and downward. 3) The moire contourography of the back of the Kendomen, Uudomen and non-athletes were taken and the characteristics of the relief of their back were examined. 4) Of the vertebral angles of the Kendomen,. the angle A (inclination of cervical lumbar line) in the relaxed posture took a negative value, and this tendency was more conspicuous in good and military posture. 5) In the position of the body gravity center,. little difference was found between the Kendomen and the non-athletes. 6) A few students both in the Kendomen and non-anthletes had the perpendicular line of the body gravity center laid upon the aulicular line. In the good or military posture, the incidence of the overlie of two lines became more frequent.
In order to give the arrow a right flight towards the target, the grip-part must be twisted to the unclockwise direction, seeing from right above, in Japanese Archery. Otherwise, the flying direction of the arrow turns to the right of target. How to twist the grip-part is the one of very important techniques in Japanese Archery, so several ways of gripping had been devised by ancient archers. In the same manner, the activities of the right arm and hand has been discribed as follows in many Japanese Archery textbooks. That is, the following two different ways are major. 1) The right arm and hand must be kept twisting inward up to the moment when the arrow is discharged. 2) The right arm and hand must be kept twisting outward up to the moment when the arrow is discharged. Therefore, the purpose of this study is to determine the proper activity of the right arm and hand. In order to investigate the difference between two methods, the movement of bow string after release was photographed. From analyzing the bow string movements, the followings could be inferred. 1) Under the influence of TENOUCHI-NOHATARAKI (the final effort of the grip hand), the bow string moves back to the initial state through such a locus as curved longer at the front of archer. 2) In the case of twisting inward the right arm and hand, the bow string curved extrcmely at the first phase if the duration of bow string movement was classified into three phases. 3) TENOUCHI-NO-HATARAKI is very important to hit a target. The effective gripping must be included successfully in the process of completing the YUGAMAE motion.