There are significant differences between Goju Kai and the Okinawan Goju Ryu of the Jundokan. For instance, Yamaguchi developed the five basic Taikyoku kata that we used to get beginners to utilise basic techniques and stances. I think this was probably heavily influenced by Shotokan kata. We also used to perform one of the Naihanchi kata (more or less Sandan, but significantly different from most other Naihanchi I have seen). He also had a plethora of fighting drills and pre-arranged sparring. None of that is part of Jundokan training. Also the Japanese karate is more go/go (hard/hard) than all the Okinawan Goju forms I have seen which are more go/ju (hard/soft).
Sanchin kata is also significantly different with Goju Kai using Higaonna Sanchin, with the turns, as the basis for its kata and Jundokan using Miyagi Sanchin. Goju Kai uses hard breathing throughout the kata, Jundokan stresses the beginning and end of each breath.
But, having said that, the different Okinawan Goju schools are different too. In 1947 Higa Seko left Miyagi Chojun and opened his own dojo. Having trained under Higaonna Kanro, Yagi used Higaonna's Sanchin in its full version. Almost all Goju styles seem to break out into heiko dachi before beginning a kata. Jundokan move straight from masubi dachi.
So even within styles that are intrinsically the same, there are significant differences, none of which mean that any of the styles is not practising 'true' Goju.
Quick note on Sanchin kata. If a Goju style was to cut Sanchin from its curriculum, then I would say, it is no longer Goju because Sanchin is the signature kata of Goju Ryu. It encapsulates all the principles of Goju karate as dancingalone said above. All the Goju techniques have their structure based on Sanchin kata and that coupled with the body positioning and tensioning and breathing make Sanchin the base of the system. I actually believe it also contains extension of Ki, but that's a discussion for another day. :asian:
Sanchin kata is also significantly different with Goju Kai using Higaonna Sanchin, with the turns, as the basis for its kata and Jundokan using Miyagi Sanchin. Goju Kai uses hard breathing throughout the kata, Jundokan stresses the beginning and end of each breath.
But, having said that, the different Okinawan Goju schools are different too. In 1947 Higa Seko left Miyagi Chojun and opened his own dojo. Having trained under Higaonna Kanro, Yagi used Higaonna's Sanchin in its full version. Almost all Goju styles seem to break out into heiko dachi before beginning a kata. Jundokan move straight from masubi dachi.
So even within styles that are intrinsically the same, there are significant differences, none of which mean that any of the styles is not practising 'true' Goju.
Quick note on Sanchin kata. If a Goju style was to cut Sanchin from its curriculum, then I would say, it is no longer Goju because Sanchin is the signature kata of Goju Ryu. It encapsulates all the principles of Goju karate as dancingalone said above. All the Goju techniques have their structure based on Sanchin kata and that coupled with the body positioning and tensioning and breathing make Sanchin the base of the system. I actually believe it also contains extension of Ki, but that's a discussion for another day. :asian:
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