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Fiber type training
Unfortuantly this training by fiber type has never held much water. The reaon for that goes back to the basics of what we know about muscle stimulation and recruitment. The Henneman Size Principle states that muscle fibers are recruited in an orderly and systematic fashion.
TypeI>>TypeIIa>>TypeIIb.
In general we all seem to agree that to stimulate the TypeIIb fibers, you need to use a fairly heavy load of approx. 85% 1rm. However, before these fibers are recruited, the TypeIb and Type IIa fibers have to be currently firing. So when you use heavier load you are in fact stimulating and overloading the TypeIa muscle fibers.
If the training by fiber type had more substance to it, eleite level distance runners would more than likely be bigger than the atypical wirey people that we often see. maybe not "Huge" but certainly bigger.
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