Quote:
Originally Posted by
Forkit 
I was wondering, is there a difference? Smith Machines seem to be much safer but my friends tell me that I should avoid it because I'm not feeling the full load due to the assistance of the machine. Is this true?
Thanks!
The feel is different even if you do squats.
You can press more by doing smiths than free weight.
Apparently you engage your stabilising muscles by using free bar than smiths which actually assist you by making it easier to do weights with the machine's motions. If you dont' believe, try using some smiths without weights. The bar can actually hang in the air when its on the way down!
It supposedly can injure you because you are using the same plane of motion all the time.
I dont give a shit about the explanations but I find free bar more difficult and tougher so I do free bar most of the time.
However smiths are not without its use. I use smiths frequently as a final touching up exercise. So if I did free bar deadlifts, I will superset with smiths half rep deadlifts.
Using smiths can also help you in some exercises like squats with your back straight which attacks your butt more.
True story: I did heavy squats on smiths because my gym only have smiths. When they bought in the power rack, based on the same weight, I couldnt do squats at all. After some time, I adjusted and can handle free squats.
As for injuries, hey, even Dorian use smiths and an old smith machine at that.