in Muscle Growth

Hey guys,

I’ve gotten a number of responses to my last email asking what “myofibrillar hypertrophy” and just
what the hell it was.

Read more here about Functional Hypertrophy, this article is well worth a read!

Myofibrillar and Sarcoplasmic Hypertrophy – What Does It Mean?

Well, let me take a second and break it down for you…

See, there are two basic types of hypertrophy (muscle growth) – myofibrillar and sarcoplasmic.

Sarcoplasmic hypertrophy is when the fluid in muscle cells (called sarcoplasm) increases in volume.

This increases the size of your muscle, but can’t contract, so it doesn’t increase the density, Or in other words, it’s that soft-looking kind of muscle that you see on many bodybuilders and is a result of high-rep, “pumping” type workouts.

Since it can’t contract, even though your muscle might get bigger, you literally don’t get any stronger.

Myofibrillar hypertrophy, on the other hand, is what you get with the muscle fiber itself gains myofibrils.

Myofibrils *can* contract, so when you gain more, not only does the muscle itself get bigger (due to bigger and more dense muscle fibers), but it gets stronger as well.

This is what happens when you lift heavy weights, and why heavy lifting is so vitally important when trying to get big.

Take a look at this 8 Week Intense Workout article from Muscle & Strength.

Think of it like this – you could take a balloon, and fill it up with water.  The balloon might be bigger, but it’s soft, mushy, and kinda delicate.

Or you could fill the balloon up with cement, and once it hardens, it’s tough, rock hard, and damn near indestructible.

Which kind of muscle do you want to build?

Yeah, I’d choose myofribillar hypertrophy, too.

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