@drdeck Same concept. I rode dirtbikes, basically in and out of a semi squat position for hours at a time. My quads were massive. I did zero weights at the time.
@kerrylog Thanks for your caveats/additions. Bt way of example to your point #2, I've noticed that I get visibly bigger a lot faster with lower weight/higher reps, but I get mechanically stronger a lot faster with higher weight/low reps.