肱三头肌握法变化：针对外侧、下部和内侧头

📝 事实核查: This is a common gym myth. ❌ The orientation of your palm (supination) does not isolate the outer (lateral) head of the triceps. Anatomically, all three heads of the triceps insert on the ulna bone in the forearm, which does not rotate with your hand. While some minor differences in muscle activation might exist, scientific literature does not support this specific claim. In fact, some analyses suggest a supinated grip might increase activation in the long and medial heads, not the lateral one.

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