however it must be noted that machida karate is a registered variation and that yoshizo himself has said that its aim is be more like the original version of shotokan when it was hybrid and devoid of tournament emphasis therefore machida karate could be more shotokan karate than modern shotokan karate both yoshizo and lyoto had said similar statements finally clich knees are in almost all martial arts with leg attacks including karate but due to the high risk of injury they are banned in sparring under most karate masters especially when considering the most natural and best target for the knee attack is generally the groin area