system of unarmed combat, now primarily a sport. The rules of the sport of judo are complex; the objective is to cleanly throw, to pin, or to master the opponent, the latter being done by applying pressure to arm joints or to the neck to cause the...

Judo is a nonaggressive Japanese martial art that developed in the late nineteenth century, split into rival approaches in the last half of the twentieth century and eventually became a global competitive sport. Judo was developed by Kano Jigoro...

Martial art that emphasizes the use of quick movement and leverage to throw an opponent. Its techniques are generally intended to turn an opponent's force to one's own advantage rather than to oppose it directly. The opponent must be thrown cleanly,...

First known as Jū-jutsu. this Japanese form of wrestling applies the principles of Taoism and Zen to physical contest. Victory is gained by giving way, and the attacker’s strength is used to his own undoing (cp....

In the US only senior players (adults, usually those age 16 and over) are allowed to earn dan levels, signified by wearing a black belt. The USJF and USJA recognise dan grades awarded by the other organisation. Advanced kyū levels can be earned by...