Pronation throwing

[LAball]

I tried the pronation throwing, I dont know if I do it the way Marshall does. But I do feel more accurate with it. I was pitching to my son and I could throw more strikes with it. He son says it comes faster, Im not sure about that. The other good thing was not my shoulder felt ok. I have a bad shoulder and cannot throw much, but it was easier this way. I also throw with a top spin, which is interesting.

[Jake Patterson]

I tried the pronation throwing, I dont know if I do it the way Marshall does. But I do feel more accurate with it. I was pitching to my son and I could throw more strikes with it. He son says it comes faster, Im not sure about that. The other good thing was not my shoulder felt ok. I have a bad shoulder and cannot throw much, but it was easier this way. I also throw with a top spin, which is interesting.

Like I keep saying Coach45 has me throwing pain free in years!

[Baseball gLove]

Most power pitchers pronate their fastballs and Marshall has nothing to do with it.

[LAball]

Do you guys get top spin when you throw? Im right handed and at the release my fingers sorta point to the sky while the palm is towards third base. Do you do this? I dont know if I could get a backspin with this motion. I might be able to put a side spin on it, but havent tried.

[Dirtberry]

Under HS film shows that involuntary pronation after release occurs with pitchers whom throw outside of vertical when they supinate their driveline until it slams their Ulnar Olecranon process into their Humeral Olecranon fossa, powerfully contract their bracialis muscle. (Hyper extension causing loss of range of motion), then at the Elastic point of supination (release) the forearm pronates the hand back involuntarily way after release. It gets more Ballisticly violent with the “Traditional Cutter, Slider then Curve.


The right way to do it is to voluntarily pronate your driveline the way some did it in the past and more and more at all levels in the last 5 years are learning to do it. Have you seen Frankies new change-up, nice.

When you voluntarily pronate at mid driveline inside of vertical thru release you eliminate many debilitating arm injuries and allows your triceps to drive the ball at its most efficient articulation, Pronation snap.

LAball,

You can create any spin while pronating over the top, you just have to learn axis control and how to pronate both sides of the ball. You can also throw a dead straight 12/6 back spin if you want. Reading Dr.Marshalls free material could give you great benefit.

[LAball]

I have already purchased his material, but its not the same. Any one in Los Angeles do the Marshall thing?

[tom.guerry]

we discussed this before, especially including opinions from Chis O and 45.

I am still trying to get a copy of Hodges tape with his arm action description and opinions on avoiding elbow and shoulder stress.

It helps the discussion to be clear about exactly what supination and pronation are and what is actively doing the supinating/pronating.

Often supination/pronation is more loosely defined as motions which turn the thumb away or toward the body when the palm is turned with the arms hanging down at the side.

Kinesiologically speaking, this can be by "true" supination/pronation which is a twist of the forearm bones, BUT the same action is alos possible by internal/external rotation of the humerus/arm bone when the arms are straight.

The things that stresses the attachment of the ulnar collateral ligament and growth plate near the medial epicondyle is lots of forearm twist which activates the "flexor mass" of muscles that attach at the medial epicondyle.

The combination of lots of forearm twist and lots of flexion/extension at the elbow during the rapid acceleration phase of the throw is what is most stressfult to this area.

"good" throwing mechanics produce rapid acceleration PRIMARILY by arm internal rotation and WITHOUT deep flexion at the elbow. Either "muscling" the ball or disconnection from the body or both forces compensation/muscling the ball with too much acceleration by flexion-extension and too deep a flexion at the elbow (should not get bent much more acutely than 90 degrees).

Now IF there is a lot of forearm twist on top of this, then you really risk tearing up the elbow at the flexor mass attachment.

Lots of additional twist happesn when the forearm is not pronated much right at handbreak.

I recommend "good mechanics" (good connection/load/acceleration primarily by internal rotation) AND not lettting the elbow bend more than about 90 degrees (this is the principle behind the "throwmax" device) AND fully pronating the FOREARM at handbreak and keeping it that way (for overhand throw with backspin/basic fastball). You still pronate the palm/thumb toward body through release and followthrough in this case by ongoing internal rotation.