Thanks for the reply drewitgolf, however i must admit i'm more confused now.
I understand extensor action to be trying to straighten the right arm which results in stretching the left. To do this the right tricep has to be contracted so surely tension in the right arm is inherent to extensor action. This leads to my question, if a swinger allows centrifugal force to straighten the right elbow how can a swinger also use extensor action?
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