That makes me think of construction workers and their muscles. They basically lift things every day, have a pretty big "rest" time in between "reps" and they are BIG.
besides the fact that they get in significant isometric, concentric, and eccentric training per day, their diet is usually very adequate in calories, as many of them drink a good amount of beer and eat a good amount of "junk". There's not many "vege" construction workers, or ectomorphs for that matter, those people are usually pretty tough (meso, which the job pretty much requires) and eat big.
It's the same reason you don't usually see NFL types in the nba, the nature of the "job" dictates who works there.
peace
Yeah exactly. That's why o-lifters are short as well. They're not short because they haven't grown anymore since they lift a lot and all that crap, but they are short because that body structure is efficient for that sport and short o-lifters are better than tall o-lifters so you see more short o-lifters at the elite levels since they are advantaged.
And I liked that astronaut example a lot. I was preparing to reply with that but you took it before me. 
LIKE USUAL, I WIN, U LOSE..
jk
good point btw, imagine kevin durant going into a gym with dreams to be an 'olympic lifter', aint happenin`..
the same point can be made for, "OMG BRO, THOSE OLY LIFTERS, THEY ALL JUMP SO HIGH CAUSE OF OLY LIFTING", and here we are looking at elite oly lifter data.... well, oly lifting and improving strength does help their jumping, but those guys have great leverages for strength and are already good at producing great amounts of force very fast, thus the reason why they are oly lifters.
what came first, the chicken, the egg, or my peanutbutter burrito.
we will never know.
