Right. But what is the difference between: A set with a very heavy weight is going to recruit a lot of MUs; a longer set with a moderate weight is going to fatigue a lot of MUs?. It’s a subtle distinction, but very important.
What is the importance?. Will fatiguing a lot of MUs have a better effect on sprinting than recruiting a lot of MUs via heavy loads?.
What are the benefits of fatiguing?.