[quote]Hanley wrote:
I’m still waiting for an answer as to how if they’re the same exercise then why can’t you use the same weight…?
(Tim H, I realise you’re not saying this, and I agree they’re similar movements, but I think they will effect your body in substantially different ways)[/quote]
Hanley - I hope your lifting is going well.
I would say the main reason you can’t lift the same weight is simply leverage, in the GM the bar is farther away from your center of gravity so it is a bit harder, the longer your torso the worse off you would be. To me it is a little bit like comparing a dumbbell lateral raise and a lateral raise on a machine (with elbows bent).
The movement and the muscles are essentially the same but the leverage (the moment arm of the resistance) has changed and is more favorable in one exercise. Perhaps a better example is the high bar squat vs the low bar squat. If stance is the same, the muscles are the same but the high bar squat is much harder due to leverage.