I dislocated my shoulder at the end of last year. My range of motion is somewhat screwed yet so I cant grip the bar and hold it in the position to do squats. I recently started doing them on the Smith machine; I can flip the release and hold the bar on my shoulder with one arm this way. Am I still getting the same benefits as free weight squats doing this? Are the Smith machine bars Olympic weight? Anyone know what the assist is on those machines? Thanks in advance