There is a major misconception in baseball that believes the opposite of a most recent case study that found Pro Pitchers Stress Arm Less than Youth Pitchers. We also have a case study that shows the internal rotation speeds of the shoulder slow down from the college...
It is proven that high velocity pitcher has more dynamic trunk movements than low velocity pitchers (1). More important is when the trunk initiates movement in the pitching delivery. This timing of trunk rotation is critical when it comes to increasing arm speed. Arm...