Jimmy03 and 2bagger have hit the nail on the head I believe. Let me just add a little to the information already provided. The concept of reverse throwing involves drills and exercises that work the back side, the decelerator muscles. The following is a pretty good explation that I found of the importance of decelerator muscles.
quote:
Without getting too technical about it, decelerator muscle groups are those muscles that allow your fast-moving body parts (like your arm when you are launching a baseball) to slow down. Think of them as brakes--every car that has an accelerator pedal and a full tank of gas should also have brakes.
So, if you only strengthen and condition your accelerator muscle groups (pecs, biceps, etc) your arm acceleration will still be limited by how well (or not) your muscular "brakes" can safely slow you down. If you throw too hard for your decelerators, think of it as trying to stop a speeding SUV with a set of brakes meant for stopping a bicycle. You are gonna get hurt with that combination.
Ron Wolforth, Paul Reddick, Steve Ellis, Tom House and others all have discussed the importance of developing decelerator muscles. Regardless of the exact "pitching" theory they believe in, the concept remains the same... Your body can only move as fast as your braking system will allow and you are more prone to injury if you have a weak braking system.
