The principles of judo may be well expressed by the proverb, "meekness overcomes strength". In other words, a person with an inferior physical strength may, with the aid of judo, be able to overcome a person far superior in physical strength. Now, what is the rationale which makes possible this "meekness over-coming strength". In order to make scientific investigations on the principles underl'ying the various techniques used in judo, we first analyzed the techniques, and made observations on their kinetics, and further wish to synthetize by adding psychological and physiological investigations. Among the throwing techniques, a few typical ones were selected, and serial photographs of the performers in action were taken by means of a high speed camera. Each serial photograph was carefully analyzed, and the kinetic principles of the techniques studied.
© Copyright 1958 Association for the Scientific Studies on Judo, Kodokan. All rights reserved.