In all the World Weightlifting find methods of struggle that stem in ancient times for the affirmation and the prevalence of the strongest on the weakest, not always coupled to the natural sense of justice. And 'the result of a common instinct: the conservation of which only change aspects. The same has happened in Japan since ancient times.
If you want to go back to the most distant origins of ju jitsu, we know that the ancestors of the Jomon and Yayoi eras, ranging from 5,000 BC Until 2 ° - 5 th century AD, used to combat man-against-man working most basic techniques such as those of fighter body - to-body, kick, shake, choke, disarticolare, with the intention of having one's opponent react. In later times, when Japan will give a more updated evolution of the times, during the period in which the capital of the State was in Nara, three "martial arts" assurgono degree of ceremonial events: kyu (shot with ' arc), kishi (archery on horseback) and the power (body fight-to-body), but the lack of unity of the country and the frequent internal strife, stimolavano interest in the practical application of methods of combat who took the name of martial arts. The fight-to-body body (sumo), became a ritual expression using martial arts that many samurai warriors they did at the victory achieved by Sakenoue-no-Tamuramaro against enemies in the field. The sumo wrestlers of that time fought fully dressed, while the modern style of competition requires that you lots practically naked.
After the capital was moved from Nara to Heian (now Kyoto), Casate Genji and Heike are bitterly fought for supremacy. The arts of military Yoroi-gumi-uchi and Katchu-gumi-uchi (yoroi: protection - fighting with protective coatings) and Karchu-gumi-Uchi (katchu: armour, armour - fighting with armor) were organized and substantially improved during the period in which the military government resided at Kamakura. The noble warrior reigned almost unchallenged during the rule of lordships of Muramachi and Sengoku, and tended dominance. Meanwhile the samurai disarmed and the bourgeoisie, which had first begun to study the martial arts, developed styles and Kosusoku Koshi-no-mawari of ju jitsu. From period Azu-About the Momoyama spread forms of sumo rituals appeared in the modern tendency to fight naked. A profound difference in silos worth fighting to separate from the sumo ju jitsu. The oldest style that you know is the Takeuchi-ryu by Hisamori Takeuchi in 1532 to Sakushu. Technically the Takeuchi-ryu gave great importance to immobilization opponent. During the period of peace that Toyotomi (1582-1589) at the court of the shogun is disputarono competitions public ju-jitsu jiai calls Gozen. During this period the prevailing styles of ju jitsu were Myura-ryu and Kukuno-ryu.
In 1650, in the resort province of Wakayama Kishu, Jushin Sekiuki set about to teach the art of Yama and developed the formal principles of the fall (ukemi). Another significant development occurred in the 17 th century with the creation of randori or free exercise of combat. During this period rose Schools popular Yawara including the Tsusumi Hozan-ryu, Miura Yoshin-ryu and Seigo-ryu. During the years of intense civil unrest dominated the warrior dall'aristocrazia ju jitsu first developed as art combat in the open, then as exercise and moral, and had its golden age in Edo (now Tokyo ). During this historical period 1604-1867) the military class (bushi) controlled the feudal society, and then as a class elitè the samurai were forced to turn their focus to other occupations especially dedicated to culture. Yet… "living in peace, but remembering the war, they continued to study martial arts.
The study of classical literature (kogugaku), especially forms Shushi-gako and Yomei-gaku esaltarono intellectual development, which found application in favour ju jitsu exercise which involved both physical and mental.
In 1670 was created by Kenyemon Tarada the School of ju-jitsu Kito ryu. Towards dine Edo period could be counted more than 160 styles of ju jutsu, of which the most widespread and effective were the Kito-ryu and Kyushin-ryu randori for their training, and the Yoshin-ryu and Tenjin-Shinyo ryu, specialising in both forms of separation of joints (kansutzu-waza), techniques of direct hits (atemi-waza), and the creation of the kata (formal exercise).
Common to each school was the reverence for the altar in Shito Dojo, and each found a common ereditane teachings Shinto, Buddhist or Confuciani. The dojo was considered and maintained as a place of training for the mind and body. Each school followed a doctrine individual, but all joined the Bushio (Code of moral warrior) and the relationship between slave-owner persisted in the form of courtesy caused by students against the Master.
The Meiji Restoration - revocation of ju jitsu
After the implementation of the "opening" of Japan to Western World occurred in 1953 with the intervention of Commodore Perry with its famous "black ships" Americans, the political groundwork was preparing for the "Meiji Restoration" (1868-1912).
Around 1859 the government shogunale of Togugawa of Edo (now Tokyo) communicated to decline when there was an attack on the life of a high official of the military government. The feudal society which was dominated by samurai warriors representing the elite military dissolved for logical consequence for the serious attack accompli. And the "classes" of the samurai, farmers, artisans and merchants finally reached a position of equality under the restored imperial government.
The practice of martial arts has undergone a rapid loss of popularity and the old elite military found very difficult to be able to adapt to a new and peaceful society no longer stratified.
Komi-uchi
Method of fighting without weapons, the most important of the martial arts studied by samurai before the introduction of firearms in Japan.

(This article was translated by a machine translation software and not by one person)