Full range squatting for athletes

I tryed squatting as far as I could go today. Usually I just try to break parallel. It seems that I can manage a lot less weight this way.

What are some of the advantages of squatting this way for athletes in particular? I heard that they help joint stabilization in sport but do they have much benefit for improved performance aswell?

What other muscles come more into play when you squat as deep as possible?

Vastus medialis; it’s very important in terms of knee stability and avoiding excessive lateral pressure syndrome (ELPS). This is a big time problem is sports where deep squat-like positions aren’t common (i.e. anything that involves running!). This is why VMO work should be emphasized even more immediately after the end of the competitive season.