"What is the difference between Japanese (classical) Jiu Jitsu Techniques (jujutsu) and Brazilian Jiu-Jitsu?"
Jiu Jitsu is one of the oldest Japanese martial arts. Japanese Jiujitsu was originally an art designed for warfare, but after the abolition of the Feudal system in Japan, certain modifications needed to be made to the art in order to make it suitable for practice. The difference is really that Brazilian Jiu Jitsu focuses on the ground while Japanese Jiujitsu focuses on stood up techniques and self-defense. The brazilian style is a type of martial art which is simple to learn, so simple that a dedicated student of one year can defeat martial artists of other styles who have many years of experience.
Brazilian jujutsu focuses on techniques that can be learnt in a very short period of time. The techniques taught in Brazilian Jiu-Jitsu are very effectual and have been tested on knowledgeable martial artists who are not cooperating. Traditional or Japanese Jiu-jitsu is one of those styles of fighting which is incomplete alone. The difference in the two styles of Jujitsu is not necessarily in the technique, but in the practice and application. First of all, Brazilian Jiu Jitsu Techniques emphasize on a very sophisticated ground-game, where Japanese karate gives importance to standing techniques like Judo.
Japanese Jujitsu as a sport does not allow leg locks, whereas Brazilian Jiu-Jitsu does. Sport rules for the Japanese style say that if a player has been pinned by his/her opponent for twenty-five seconds, he or she will lose the match. On the other hand Brazilian Jitsu has no time restraints on ground positions. Brazilian Jujitsu is a modern style of Jujutsu; once a technique is developed and used in competition, other players begin to design counters to that technique, and counters to those counters, which allows the Brazilian style to evolve freely. Brazilian players do not prepare for the untrained opponent; they assume that their opponent may be more technical.
Brazilian Jiu Jitsu techniques has more stuff on the ground whereas Japanese Jujutsu has more standing techniques. The Brazilian style is most strongly differentiated by its greater emphasis on groundwork, in contrast with Japanese karate which has greater emphasis on throws, due to both its radically different point-scoring system, and the absence of most of the judo rules that cause the competitors to have to recommence in a standing position
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