Abstract
The purpose of this study was to explain to the judo principles, and to examine to present young judo player's knowledge on the judo principles.
We examined to JIGORO KANO's writing literatures on the judo principles, and we made inquries about The judo principles to university judo players of 126 in number.
We explained as follow on the judo principles.
1. SEIRYOKU-ZENYO means to use one's energies in proper quantities case by case.
2. JITA-KYOUEI means to be satisfied with generally.
3. SEIRYOKU-ZENYO and JITA-KYOEI correlate to each other.
4. SEIRYOKU-ZENYO and JITA-KYOEI are principles that analyzed to thought of DOKA's JYU.
5. There needs as a great energies as win against a person and the mind that sticks at nothing to realize the judo principles. And there things can to learn from judo practices.
The result were as follow on the inquries about the judo principles.
1. The players who gives a correct answer on means of SEIRYOKU-ZENYO were only 14 in number.
2. The players who gives a correct answer on means of JITA-KYOEI were nobody.
3. The players who gives a correct answer on relationship of SEIRYOKU-ZENYO and JITA-KYOUEI were only 5 in number.
