I have quite big thighs, I weigh 140 now so not that small. For instance I'm wearing 29 inch waist pants right now, and I can fit 3 fingers in the between the pants and my waist, but it's my thighs and ass that hold up the pants. On the thighs my pants are skin tight.
What I was gonna say is that the reason olympic lifters do 1-3 rep exercises is they are practicing what they are gonna do to win the gold medal, which is to lift the greatest amount of weight possible. THey are just practicing, trying to get their movments to be efficient which will help to get that weight up, but the muscle growth and strength most likely comes from when they are doing lower weight exercises. I mean, this is my experience in the gym, when I was getting back into shape I could do only a couple pull ups, but by doing close grip pull downs with much less weight than my body weight, I could do 8-10 pull ups when I went back to the pull up bar. Was I doing less weight but it improved my strength in pull ups, the chance of olympic lifters ONLY doing 1-3 reps on their exercises is 0 on any lift, that is such a dumb idea