All sports carry injury risks. In the event of loss of consciousness (LOC) in judo, and with an appropriate mechanism of injury, concussion is likely to be high on a list of potential causes. The diagnosis and management of concussion has recently garnered much attention, yet we are only scratching the surface of this complex issue. However, there is another aspect of LOC in judo, which warrants discussion: choking techniques (shime-waza). Knowledge of shime-waza is vital in judo training and competition, and we try to clarify some aspects of LOC caused by shime-waza in judo.
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