(click here: http://andrebertel.blogspot.com/2011/03/real-kata-is-ruled-by-oyo.html). There have been numerous other articles in relation to these topics, but because this is merely a blog, I've not provided specific explanations. Naturally, I'll keep it this way because this knowledge is for my students around the world, guests who visit the dojo to sweat, and for my hosts when I'm invited to conduct technical seminars.
Overall, unless one has a complete system of training, as explained above, their karate will never be optimally functional. This is what clearly establishes the difference between sports and traditional (martial arts) karate.