A triangle choke, or sankaku-jime (三角絞) in judo, is a type of figure-four chokehold that encircles the opponent's neck and one arm with the legs in a configuration similar to the shape of a triangle. Applying pressure using both legs and the opponent's own shoulder, the technique is a type of lateral vascular restraint that constricts the blood flow from the carotid artery to the brain, potentially resulting in loss of consciousness in seconds when applied correctly. Recent studies have shown that the triangle choke takes an average of 9.5 seconds to render an opponent unconscious from the moment it is properly applied.
The first reported variation was the front triangle choke or 前三角絞め, applied from the position known in modern times as guard, often after a pull down or 引込.Toshiya Masuda, Why Kimura Didn't Kill Rikidozan appendix, 2011 Another variation was the horizontal triangle or 横三角絞め, performed from the side. Martial arts historian Toshiya Masuda has attributed its innovation to Masahiko Kimura, who would have created it during the Takudai kosen judo tournament at Takushoku University and accomplished prolonged success with it, though he also deems probable that Kimura only popularized the variation instead of creating it. The inverted variation or 後三角絞め, typically seen in modern judo competition, was the next addition, preceding many others.
Among those variations, the front triangle is particularly favored by practitioners of Brazilian jiu-jitsu. According to a popular belief maintained by Romero Cavalcanti, the technique was introduced in Brazilian jiu-jitsu by Rolls Gracie after finding it in a judo book.Roberto Pedreira, Jiu-Jitsu in the South Zone, 1997-2008, January 1, 2013 Márcio "Macarrão" Stambowsky, who was named by Rickson Gracie as one of the earliest Brazilian competitors to popularize the concept, has also credited Rolls. Other sources, like Toshiya Masuda and Roberto Pedreira, believe it might have been introduced in Brazil much earlier by Yasuichi and Naoichi Ono, disciples of Yaichibei Kanemitsu himself, as well as possibly other judo practitioners like Ryuzo Ogawa. Rolls trainee Mario Tallarico lends credibility to this theory, as does a 1935 newspaper clipping that depicts Yasuichi Ono performing a Triangle Choke in his training for an upcoming fight with Helio Gracie.
The triangle choke was seen in Japanese shoot wrestling in the 1980s. The triangle choke was first shown in mixed martial arts on March 11, 1994, when Jason Delucia used a triangle to defeat Scott Baker at UFC 2. This variation has remained as the most commonly seen in MMA, although the side or inverted triangle has been also used; on September 26, 1995, Shooto fighter Rumina Sato submitted Isamu Osugi with a flying inverted triangle choke. Many years later, Toby Imada won 2009 Submission of the Year with an inverted triangle choke over Jorge Masvidal at Bellator 5. Even more complex holds, like Chris Lytle's inverted mounted triangle/straight armbar combination at UFC 116 in 2010, have also surfaced.
In professional wrestling, The Undertaker used a variation of the move as a finishing submission, called the “Hells Gate.”
Technique
Defensive action
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