Re: Glycogenolysis in non active muscle during exercise? What could be the reason???
That's exactly what I was thinking -- perhaps the "reverse is not true" (forearm training doesn't produce the same) is because it just doesn't register as a sufficiently significant stressor to really get those hormones flowin'.
Although maybe not related, this post definitely got me to revisit the "transfer of strength in the arms" post (training one arm = stronger opposite arm).