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Muscle Fiction and Muscle Truth

May 17, 2008

If you’ve spent any time weight training, you are sure to be familiar with at least some of these myths.

1. The 12 Rep rule

Your average training regimens feature twelve repetitions, the theory being being that this is somehow the “magic number” of repetitions for building muscle. The truth be told, this does not adequately work the muscles enough to build mass.

The standard prescription of eight to 12 repetitions provides a balance but by just using that program all of the time, you do not generate the greater tension levels that is provided by the heavier weights and lesser reps, and the longer tension achieved with lighter weights and more repetitions.

Eight to twelve reps does not give you the tension levels that can be achieved by less reps with heavier weights, or the longer tension that comes from light weights with more reps. To create all types of muscle growth, change up your routine - both in terms of repetitions and the weights you use.

2. Three Set rule

The truth is there’s nothing wrong with three sets but then again there is nothing amazing about it either. The number of sets you perform should be base on your goals and not on a half-century old rule. The more repetitions you do on an exercise, the fewer sets you should do, and vice versa. This keeps the total number of repetitions done of an exercise equal.

3. Three to four exercises per group

There is really no basis for this myth. It is better to do more reps of one exercise than lose focus by trying to do too many different exercises per group. Try upping the number of reps (say 30-50, somewhere in there). Obviously, break this up into sets.

4. My knees, my toes

It is a gym folklore that you “should not let your knees go past your toes.” Truth is that leaning forward a little too much is more likely a cause of injury. In 2003, Memphis University researchers confirmed that knee stress was almost thirty percent higher when the knees are allowed to move beyond the toes during a squat.

But hip stress increased nearly 10 times or (1000 percent) when the forward movement of the knee was restricted. Because the squatters needed to lean their body forward and that forces the strain to transfer to the lower back.

Try to think more about the position of your torso, and not so much about your knees. Keep your torso as upright as you can during lunges and squats. This means less stress on your back. A tip for staying upright: prior to squatting, press your shoulder blades together and keep them there. While squatting, try to keep your forearms at a right angle to the floor.

5. Lift weights, draw abs

What is the most important muscle group? The transverse abdominis? That all depends. The answer depends on what exercise you are doing. In most cases, the body already knows which muscle group to call into action to keep the spine supported. Focusing on the wrong muscle group (in this example, the transverse abdominis again) can work the wrong muscles while holding back the correct ones, which raises your risk of injuries and lowers the weight you can lift.

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Posted by Mike Stason · Filed Under Fitness 

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