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Old 03-02-2011, 06:02 PM   #38
bhupaes
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Join Date: Aug 2007
Posts: 962
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Sennoc, when you say the upper arm contributes, you mean upper arm rotation as in internal shoulder rotation, right? This would move the racquet in the same way (almost) as forearm pronation, and because of this, a lot of people probably consider upper arm rotation to also be pronation. I agree, pure forearm pronation is a positioning/directing mechanism.
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