Quote:
Originally Posted by kylejt
Also, the sound inside these contraptions is really LOUD. I've got an All Star helmet that I wear on certain fields, and blows to that make my ears ring. That may play a role in concussion. The percussion + the blow can't be good for your noggin.
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Sound has nothing to do with concussions. A concussion is caused by a rapid change of velocity by the head, which causes the brain to move around within the skull.