One of the sprinters I know (11.17 PB) weighs 205 pounds and is 6’2. He’s barely trained and raced himself into shape last season (11.6 opener, down to 11.17 over 3 months). Plays football seriously as well. Doesnt lift regularly, only has lifted a few times.
He’s also 15 years old.
So how does a heavier sprinter like himself run low 11’s without the extra mass affecting him?