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Old 09-27-2012, 06:02 AM   #45
boramiNYC
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On a second thought I'm not sure it's the weight transfer. Because biomechanics on walking or running involves arms and upper body counter-rotating to counter the rotational force created by leg movement and keep the center of the body stable. It seems for this shot the forward swing and contact always involves huge step creating a great lower body rotational force and the upper body is counter-rotated fast to match that lower body rotational force. This seems to be source of arm acceleration?
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