What is the limiting factor in muscle growth?

I’ve read articles that say consuming a lot of protein doesn’t help and that what you really need is carbs. It’s my understanding that the body uses carbs as energy to rebuild muscles using protein. You need enough building materials and energy to do the work.

So given enough carbs, rest, and protein, could your body utilize all that protein into muscle growth? What is the limiting factor in muscle growth?
I guess what I’m asking is what component in your body stops the process of synthesizing muscle when you consume the protein? Why can’t it keep going? Risk of wearing out the component?
muscular-body-builder
The body will only utilize whatever protein is necessary for muscle making.

Let’s say you’re working out for 2 hours straight, but not with enough weight to stress your muscles. Then you don’t need extra protein because you’re not “building” muscle. You’re merely maintaining what you have (and you might already be overeating protein anyway).

Let’s say that you’re working out 30 minutes straight with the heaviest weights you can do 10 reps with before the point of fatigue (which is how body builders train). Then you may need more protein because you’re stressing the muscles and ripping them.

But again, you may already be eating enough protein as it is. Protein doesn’t magically turn into muscle by osmosis.

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7 Responses to “What is the limiting factor in muscle growth?”
  1. Bear Naked says:

    heredity
    References :

  2. Nosy Parker says:

    I think you should look at your older relatives.
    Genetics is probably the most important factor in how your body will develop, no matter what else you do.
    References :

  3. G M says:

    Genetics. Also…. protein is the real muscle builder.
    Eat lots of beef jerky and steaks. TONS!
    References :

  4. driftingtd says:

    The combination of carbohydrates, protien, fat and calories all play an important part. But what you have to keep in mind is that you body can only absord so much at a time. Think of your body like a shot glass. You can only fit so much into it. If you keep pouring it’ll overflow. Your body works the same way. It can only process a certain amount of protein. Generally anything more than 30g of protein an hour is too much. It all depends on what you are trying to accomplish. Carbs are very important to muscle recovery, but make sure you are getting the right kind of carbs.
    References :

  5. Boarder23 says:

    well… you always need protein to build muscle because in basic science terms…. amino acids are what build muscle…. amino acids are the building blocks of mucle….. and you need COMPLEX carbs (brown rice and pasta are my favorites) to give you the energy to have a good workout and essencially build the muscle…… so what limits the muscle growth? not eating or the lack of not eating good food (complex carbs again) can do it… but there really isn’t anything that "limits muscle growth"… sex also can limit growth because it fatigues your body……just eat well and train often…
    References :

  6. Kimmer K says:

    The body will only utilize whatever protein is necessary for muscle making.

    Let’s say you’re working out for 2 hours straight, but not with enough weight to stress your muscles. Then you don’t need extra protein because you’re not "building" muscle. You’re merely maintaining what you have (and you might already be overeating protein anyway).

    Let’s say that you’re working out 30 minutes straight with the heaviest weights you can do 10 reps with before the point of fatigue (which is how body builders train). Then you may need more protein because you’re stressing the muscles and ripping them.

    But again, you may already be eating enough protein as it is. Protein doesn’t magically turn into muscle by osmosis.
    References :
    http://www.kimkins.com

  7. konagold_1 says:

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    References :

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