Dude, who even knows.
Back on my smashing bullshit, now that I’ve charged up with an overstrength creatine dose (actually, I rearranged my doses so I take all 5 in the morning instead of 3/2 now that I won’t wake up in such a pit at bottom) my limiting factor now isn’t any of the muscles specific to this motion – helper muscles to aim the swing, forearm to hold on and tilt the head up, even waist and thigh to stabilize my base – but the more general and capacious chest muscles raising an 11 pound weight at the end of what between arms and handle is a 7-foot fulcrum