JV gave a nice description of the technical mechanics behind the arm motion.
Basically, the pitcher by changing the configuration of the arm (i.e., the amount of bend in the arm), the pitcher increases the RPS (AKA, angular velocity) of the arm.
However, to change the increased RPS into an increase in the linear speed of the fingers at release, the upper arm has to be slowed down prior to release. (If the upper arm isn't slowed down, the speed of the arm will decrease.)
A pitcher slows the upper arm down by a combination of (1) the shoulder muscles and (2) brush resistance.
The more brush resistance, the less work the shoulder muscles have to do...which means the shoulder muscles will last longer. (Of course, that is at the expense of pounding the arm on the hips...but most women have extra padding on the hips.)
I'm wondering if brush resistance reduces injuries to the pitcher's shoulder.
JS, what do you think? I'd love to have Rick weigh in on this...but I think he is tied up with his new job.
Basically, the pitcher by changing the configuration of the arm (i.e., the amount of bend in the arm), the pitcher increases the RPS (AKA, angular velocity) of the arm.
However, to change the increased RPS into an increase in the linear speed of the fingers at release, the upper arm has to be slowed down prior to release. (If the upper arm isn't slowed down, the speed of the arm will decrease.)
A pitcher slows the upper arm down by a combination of (1) the shoulder muscles and (2) brush resistance.
The more brush resistance, the less work the shoulder muscles have to do...which means the shoulder muscles will last longer. (Of course, that is at the expense of pounding the arm on the hips...but most women have extra padding on the hips.)
I'm wondering if brush resistance reduces injuries to the pitcher's shoulder.
JS, what do you think? I'd love to have Rick weigh in on this...but I think he is tied up with his new job.
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