History of Judo
Modern judo is the classic example of a 'sport' that derived from jujutsu and became distinct - (although many who study Judo still believe as Kano did, that Judo isn't a sport but a self defense system creating a pathway towards peace and universal harmony through the art and physical exercise). Another layer removed, some popular arts had instructors who studied one of these jujutsu derivatives and later made their own derivative succeed in competition. This created an extensive family of martial arts and sports that can trace their lineage to jujutsu in some part.
The way an opponent is dealt with also depends on the teacher's philosophy with regard to combat. This translates also in different styles or schools of jujutsu. Because in jujutsu every conceivable technique (including biting, hair-pulling, eye-gouging, striking the groin, etc.) is allowed (unlike judo, for instance, which does not place emphasis on punching or kicking tactics, and karate, which does not heavily emphasize grappling and throwing), practitioners have an unlimited choice of techniques.
Not all jujutsu was used in sporting contests, but the practical use in the samurai world ended circa 1890. Techniques like hair-pulling and eye-poking were and are not considered conventionally acceptable to use in sport, thus they are not included in judo competitions or randori. Judo did, however, preserve the more lethal, dangerous techniques in its kata. The kata were intended to be practiced by students of all grades, but now are mostly practiced formally as complete set-routines for performance, kata competition, and grading, rather than as individual self-defense techniques in class. However, judo retained the full set of choking and strangling techniques for its sporting form, and all manner of joint locks. Even judo's pinning techniques have pain-generating, spine-and-rib-squeezing and smothering aspects. A submission induced by a legal pin is considered a fully legitimate way to win. Kano viewed the safe 'contest' aspect of judo as an important part of learning how to actually control an opponent's body in a real fight. Kano always considered judo to be a form of, and a development of, jujutsu.
A Judo technique starts with gripping your opponent followed by off-balancing the opponent and using his momentum against him, and then applying the technique. Kuzushi(the art of breaking balance) is also used in Jujitsu, where the opponent's attack is deflected using his/her momentum against them in order to arrest their movements then throw them or pin them with a technique—thus controlling the opponent. In both systems, kuzushi is essential in order to use as little energy as possible. Jujutsu differs from judo in a number of ways. In some circumstances, jutsuka generate kuzushi by striking one's opponent along his weak line. Other methods of generating kuzushi include grabbing, twisting, or poking areas of the body known as atemi points or pressure points (see kyusho-jitsu) (areas of the body where nerves are close to the skin).
For Jiu Jitsu in Dublin, Straight Blast Gym Dublin is a club which specialises in Jiu Jitsu for beginners and has Dublins only 2nd Dan Blackbelt in Jiu Jitsu
