
Originally Posted by
IronReload04
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-man, i really gotta find that article......but i will just talk from memory for now........when you do a set, the muscle fibers that are used kind of rotate around for most of the set........they are not all contracting, but kind of skipping around and in clusters.....now when you get close to failure, the type 2's start coming into play, and all of them contract together......so the majority of the set is some what useless to building muscle mass...its the end of the set when the type 2's start contracting and working together.....its damaging these muscle fibers that cause muscle growth......now by rest pausing, because of the minimal rest, for the second 2 mini sets, its all type 2's that are lifting the weight......so by rest pausing, you are kind of bypassing unneccisary work.......by rest pausing on the last 2 mini sets, you are placing the entire work load on the muscle fibers that have the greatest potential for hyper trophy.........the other muscle fibers that work during the first part of the first mini set, dont have much potential at all for hyper trophy....
so that is another reason behind all this
so even though, you cant handle as much power output, you are intensily fatigueing and breaking down the type 2's and other fast twitch fibers......the muscles that actually have abiltity to grow
edit- when i say type 2's, i think i also mean other fast twitch fibers also