Extra squat rebound with toes pointed forward
I have been squatting the way book teaches us to squat for some time now, worked well as expected. (Heels shoulder width, toes pointed out 30 degeees)
My femour and hip capsule bone structure is, i suppose, made so that i can hit biggest depths and i feel the most comfortable squatting with toes poinet out
But when the goal is to hit maximal weights for powerlifting say, moderately wide stance, clearly outside of shoulder width with toes pointing straight forward or like 5 degrees to the outside gives me some weird rebound. I am not sure what is rebounding off of what but i feel quite a bit stronger this way. (Something was mentioned in the book on this subject but not in any real detail)
My question is what is happening here mechanically? Can we even know the answer, maybe its just the way i am built?