
Originally Posted by
AdamGH
The reason machines take up so much space in today’s gyms is that they give the place a clean, modern, technologically advanced look. So people think that the gym is “better”.
Free weights allow you to follow your body’s natural line of motion and require that you stabilize the weight, whereas machines stabilize the weight for you and restrict you to a fixed path of motion. Essentially, machines are doing a portion of the work for you making your workout less effective. In addition, an over-reliance on machines for your weight training can make you prone to injury in the long run due to neglecting your important stabilizer muscles. Take for example a free weight barbell squat versus a Smith machine squat. During the free weight barbell squat, your core musculature must provide significant stabilization of your body (especially in a front squat or overhead squat). Now contrast that with doing squats in the Smith machine where the weight is already stabilized for you taking away any core strengthening benefits and also putting you in a fixed up and down path which is not the natural path your body should take, thus placing your spine in a potentially dangerous position.
I think certain select machines can be incorporated at times and benefit your training. One idea you can use to break out of a training plateau is actually to use a 2 or 3 week cycle of using almost all machines, and then return to a free weight based program after that for the majority of your time. If you really like certain machines and don’t want to give them up, at least always make sure that free weights make up at least 90% of your exercises. I don’t consider cable exercises as machines. Cable exercises such as lat pulldowns, horizontal rows, or cable bench presses from a stability ball can all be beneficial.