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Smith machines

bignascarfans said:
I'm interested in finding out what are the pros and cons are of using the Smith machine for Squats and Bench press?

Thanks!

Yes. Just trying to understand the pros/cons. Why do you asked?
 
bignascarfans said:
Yes. Just trying to understand the pros/cons. Why do you asked?

by having used one, I would think you would be able to understand... but anyway... IMHO a Smith machine is just that, a machine. buy using free weights, barbells, squat bar, your body (and mind) has to really work to lift the weight. You have to have balance, good form and strength. Same case as with bench pressing... added you will be able to see where you have a weakness. With a smith it's eaiser for one leg to take over, or one arm, etc.
You will find that you will be able to lift more lbs on a smith machine because you can be sloppy. With guide rails (a track to follow), you dont have to have good form, you follow the track of the machine, you get it?
With a smith you can go to failure with out a spotter... but your still compromising form and real strength...
They both have their place and the smith is great for rehab and like I said going to failure, but free weights reign supreme.
I'm sure some one else here can explain it better!
 
Just to give you an idea of how much a smith machine takes out all the stress of an exercise to your self a test. Go do a seated military press on the Smith. Load it up so you can do the most you can for say 5 reps. Now cut that weight in half and go see if you can do 5 reps with a seated shoulder press free weight bar. You won't be able to...that is how much weight the stabilizer muscles AREN'T working on the Smith Machine. So why wast the time....Use as many muscles as possible for every exercise. Just like why poeple do one armed dumbell rows compared to bent over rows....I don't understand the concept. Half the weight...double the workout time.
 
I think a really fun experiment tends to be using carryover.

For instance - take your best set of 5 in the smith squat. Drop it and work on the freeweight squat over 6-8 weeks improving capacity. Now - if the free weight squat was effective, you should be able to get in the smith and within some weeks of reacclimation set a new personal record. I'd say, this would be very common, repeatable, and would be a valid expectation.

Now do the reverse, take your best free squat set, work exclusively in the smith getting a solid increase over time, and transition back. What generally happens is that even after some reacclimation there is no new PR, sometimes performance just drops to the crapper in the regular squat.

Obviously, this isn't as valid for a novice where anything can work and give progression (free squat will still outperform smith though), but that's kind of a good way to look at these things. If something really worked to make you fundementally bigger and stronger, you'd see those increases in the core lifts in fairly short order.
 
The problem with the Smith Machine is not immediately obvious, especially to a beginner. When I first saw the smith machine back in 1993 or so after a couple years of training, I thought that it must have been the best invention in BBing! I've now realised that it actually increases the potential for injury instead of making exercises 'safer':

The straight line 'groove' that the smith machine forces the barbell to travel is unlike anything that your body would press with a 'free' bar. This means that when you bench press a barbell, the actual movement follows a very subtle arc or even S-shaped path in it's acent/decent. In fact, it's probably safe to say that the lowering of the bar is also slightly different from the raising of the weight. This is the same for ALL compound movements that can or cannot be 'replicated' on the Smith: squats, deads, OHP, bent/upright rows...

The problem occurs when the complex network of synergistic muscles (such as rotator cuff, rhomboids, etc) that support the bench press are forced to adjust their lengthening/shortening and joint manipulation (such as the scapula and collar bone that make up the AC joint) to the straight line imposed by the smith machine.

The smith machine will cause imbalances in functional strength which increase with the more strength you gain on smith exercises. Try applying strength gained on the smith to real world situations, and you will find that you are laking the core and balance and are likely to strain youself when performing maximally.
 
In my opinion, the Smith Machine is a retarded peice of garbage. Sometimes, I stretch myself out on the frame if people are using the chinning bars though, so I guess I can't say it is TOTALLY useless.
 
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