Why pros don't train low reps?

[JuliusPleaser]

Interesting. I know slow twitch are smaller than fast twitch, but if you have a ton of slow twitch in your legs and blasting fast twitch, doesn't mean it will grow

[GearHeaded]

Interesting. I know slow twitch are smaller than fast twitch, but if you have a ton of slow twitch in your legs and blasting fast twitch, doesn't mean it will grow

fast twitch muscle fibers have more potential for overall growth and size.. most 300 pound pros are going to be fast twitch dominant.
but for the average every day person like us , we can only do what is best for us.

so .. IF my quads happen to be very slow twitch fiber dominant. and slow twitch fibers can't grow near to the size of fast twitch fibers, it still would not be good to train only fast twitch fibers for my quads in hopes that they will grow just because fast twitch can get bigger.
if I have 80% more slow twitch fibers , simply getting those fibers bigger all together, even though one on one they are small then fast twitch fibers, I will end up with bigger overall quads because there are simply that much more of them to begin with.

example -
if I have 10 giant iron beams to build a house out of , and that steel is strong as fuk and optimal to build a structure out of ,, yet I also have 100 truck loads worth of lumber and 2x4s , which are not near as optimal and strong as the steel beams .. the fact that I have that much more lumber then steel beams means I'm going to be able to build that much bigger of a house.
the house of lumber is going to be 8000 sq ft. the house of steel beams only may only be 400 sq ft.

so just because one fiber type is bigger and better for hypertrophy you still can only work with what you got the most of.