[quote author="mike" date="1166068937"]
The arms DO NOT AND SHOULD NOT stay at 90 degrees for ANY ATHLETE. I challenge someone to find one sprinter in the history of athletics who has kept a 90 degree elbow angle. It makes no sense from a mechanical sense and it just simply DOES NOT HAPPEN no matter how hard a coach cues it to happen.
so how do u coach arm action? what do u advocate a sprinter do?
pump the arms fast.