Studies on the physical fitness of Judoists mainly from the anthropometric standpoint were already made prior to World War II. However, these consisted mainly of comparative studies of Judoists and non-trainees at rest, and Physiologie investigations of Judoists in action were very few. Since the termination of the w ar, the scientific m ethod of training has been m uch advocated, especially by the Association for the Scientific Studies in Judo, and Physiologie studies regarding the Shimewaza (choking technique), the Kansetsu-waza (joint lock or dislocation technique), and Nagewaza (throwing technique) have already been reported. Furthermore, the adoption of Judo as an official event in the 1964 Olympic Games has prompted those concerned to emerge from the old method of training based on experience and perception to the new scientific method, and as a result, measurements of physical fitness of Judoists have been made in order to rationalize training and thus efficiently increase the physical fitness of Judoists. The weight system has been adopted in Judo contests in order to obviate the unfairness arising from differences in body weight, and the energetic performances by the heavy weight Judoists of the foreign teams were a great impetus in arousing interest in the problem of stamina, which was found to be somewhat lacking in Japanese Judoists. The Committee for Research in Sports Medicine was quick to perceive this and are investigating on the appropriateness of the all-out endurance running time on a treadmill as the criterion for measuring stamina. The Association for Scientific Studies in Judo of the Kodokan has also taken an interest in the problem of stamina, and the present author has been conducting studies in stamina from the standpoint of cardiac function by means of Roentgen cinefluorography. The Roentgenographic method of study on the heart was also used by Sasa and associates in their investigation of Shime-waza. In the present Roentgenographic study, serial changes in the cardiac shadow were observed while the experimental subject cycled at full force on a bicycle ergometer, which requires a great amount of stamina. Masuda has already reported on a similar study in which middle distance running athletes were used as experimental subjects, however, similar studies on Judoists have not yet been made. In the present paper, physical fitness of Judoists will be discussed from the viewpoint of cardiac function. An elucidation of cardiac function from data obtained by Roentgen cinefluorography and proposals regarding cultivation of stamina based on these data, will be made in a later report.
© Copyright 1969 Association for the Scientific Studies on Judo, Kodokan. Alle Rechte vorbehalten.