Here is the answer1) I’m the reason we started using QOH for stride foot. Rich has my number and I’ve gotten multiple purchases for him from coaches at the private and division 1 level.
2) “because we do” is the type of dogma that kills me. We’ve done testing on force plate data comparing the starts and ability to create true momentum. Rocking or rolling for 90% of pitchers DOES NOT create momentum because they fail to move their entire mass in the same vector (physics definition of momentum). They have pelvic shift, poorly timed back swing, and shoulder impingement.
2)Translational motion.
From reading your critique of what others dont do.
"fail to move there entire mass in the same vector"
You would be in agreement if the body as an entire mass moved.