Judo: origins, techniques, rules, and cultural significance

Judo is a modern Japanese martial art and Olympic sport founded by Jigoro Kanō in 1882. It emphasizes throws, pins, submissions, and the principles of efficiency and mutual benefit.

Author: Leandro Alegsa Creation date: November 13, 2022 Last updated: May 21, 2026

Overview

Judo (柔道, jūdō) is a modern Japanese martial art and competitive sport created in 1882 by Jigoro Kanō. The name means "gentle way," reflecting an emphasis on using balance, timing and leverage rather than brute force. Judo is practiced worldwide as both a system of self-defense and an organized Olympic discipline.

Core principles and training

Two central maxims guide judo: seiryoku zen'yō (maximum efficient use of energy) and jita kyōei (mutual welfare and benefit). Instruction combines formalized prearranged forms (kata) with free practice (randori). Training also stresses physical conditioning, mental discipline, and etiquette such as bowing and respect for partners.

Techniques and structure

Judo techniques are commonly divided between standing and ground work. Major categories include:

Nage-waza (throwing techniques) that off-balance and project an opponent to the mat.
Osae-komi (holding or pinning techniques) used to control an opponent on the ground.
Shime-waza (strangulations/chokes) and kansetsu-waza (joint locks), applied chiefly in ne-waza.

Equipment, ranking and competition

Practitioners wear a heavy jacket and trousers called a judogi. Progress is signalled by colored belts: kyu grades for students and dan ranks for advanced practitioners. In sport competition, matches are decided by scores such as ippon (a decisive score) and waza-ari, with penalties for rule infractions. Judo forbids strikes and emphasizes safety through controlled practice.

History, spread and uses

Kanō founded the Kodokan as the principal school and organizational center; from there judo spread internationally through teaching, military adoption, and schools. It became an Olympic sport for men in 1964 and for women in 1992. Beyond competition, judo contributes to physical education, police training, and personal development.

Distinctive features and legacy

Judo is distinct from related arts by its codified pedagogy, competition rules, and educational focus. Its techniques influenced other grappling arts and mixed martial systems. Many judo clubs emphasize character building, making the art influential both on and off the tatami.

The throw Harai-goshi in the Nage-no-kata

As a rule, children can participate in judo training from the age of five.

Designation

Judo literally means "gentle/flexible way" (composition of jū "gentle", "yielding", "flexible" and dō "way"). In Japanese, the beginning of the word is pronounced as in English (dʒɯːdoː). In German, the pronunciation is mostly [ˈjuːdo], but in Austrian German it is mostly [ˈdʒuːdo]. A judo fighter is called a judoka (Jap. 柔道家). For word formation, see also Budōka.

Initially, the martial art founded by Kano was still called Jiu Jitsu, but it was not until the beginning of the 20th century that the term Judo became established. This is the reason why the term Jiu Jitsu was used in the first publications in the West. Since the Western Jiu Jitsu schools initially had only loose contact with the Kodokan organization in Japan, special techniques developed there. Most of the original Jiu Jitsu schools later became official Judo schools; in many schools the original training continued in parallel under the name Jiu Jitsu.

Clothes

Traditionally, judoka wear ankle-length white cotton trousers (zubon) with a half-length white cotton jacket (uwagi) over them, held together by a (white, black or coloured) belt (obi) (judo gi).

In order to better distinguish between the two opponents in competitions, in international championships, but also in fights in the Judo Bundesliga, the judoka named second when called up wears a blue suit. If this is not possible, the fighters are distinguished by a red or white belt (in addition to their belt according to their Kyu or Dan degree).

In the league and in friendly matches colored Judo suits can be used. It is to be noted that the team appears uniformly and a clear color difference to the guest team is given. The home team has the right of way.

Author

Creation date: November 13, 2022

Last updated: May 21, 2026

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