The 4-Hour Body - An Uncommon Guide to Rapid Fat-Loss, Incredible Sex, and Becoming Superhuman - Timothy Ferriss
your advantage with a bit of inside knowledge.
The names of both sound complicated--myo brillar and sarcoplasmic--but the di erence is
really very simple.
Let's start with a basic primer on muscle fibers.
Every muscle ber has two main parts: myo brils, which are cylinder- shaped laments that
contract to create movement, and the sarcoplasm, which is the uid surrounding the myo brils
that contains glycogen stores and mitochondria to provide energy (ATP).
Myofibrillar hypertrophy20 can be thought of as growth for maximal strength. The myo brils
in the muscle ber increase in number, adding primarily strength and some size to the muscle.
This kind of muscle growth is achieved by high tension--doing one to ve reps at 8090% of
your one-repetition maximum, for example. The strength output is limited to brief intervals, as
you're developing fast-fatiguing type 2 muscle fibers.
Sarcoplasmic hypertrophy can be thought of as growth for maximal size or anaerobic fatigue
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