In a "Athletic Pitching Motion" the pitcher ultimatly utilizes every ounce of energy he or she can produce while under control and balanced to throw the ball. Energy is being produced and being transfered in a efficient connected delivery. If we don't utilize 100% of power that is obtainable in our lower half (Leg Drive) , our arm will try to create the velocity and will take on most of the stress.
Kibler and Chandler calculated that a 20% decrease in kinetic energy delivered from (back leg drive) to the hip and trunk to the arm requires a 34% increase in the rotational velocity of the shoulder to impart the same amount of force to the hand.
The first source of energy and the most important is the "Leg Drive". When we drive away from the pitching mound using our legs instead of just falling forward we create energy that will transfer into what is called seperation. This "Seperation" is the hips internally rotating while the upper body stays closed to home plate. While this happens normally....we can increase this "Elastic Energy" by driving with our legs away from the rubber and transfering this energy to "Linear and Rotational POWER" (POWER=STRENGTH X SPEED) that transfers directly to arm speed. With this leg drive you will create more Kinetic energy that will transfer through the kinetic chain and create more arm speed with less stress on the arm that equates to more velocity.
RICH DUNNO
The workings of a "Powerful Efficient Delivery"
Roger Janeway/Texas Rangers SCOUT quote:
"This is about as scientific as I can be..it is proven that a human's legs are the strongest parts of the body..With pitching, it is a fact that pitchers with greater leg drive produces greater wrist velocity (thus greater mph); A pitching motion begins with the lower body and then progresses through the body core before finishing with arm speed."
Jeff Jones/ Detroit Tigers, Pitching Coach
"To create more velocity you must.....put more power to the ground."
Dr. Mike Marshall/CY Young winner/L.A. Dodgers
"For my third law of force application for baseball pitchers, I determined that, to achieve their maximum release velocities, baseball pitchers must apply more force toward second base."
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