WEBVTT

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This video is answering the member question how do both arms supinate in

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the downswing? So I just posted a video from the World Golf Fitness Summit 2018

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and I put up a bunch of 3D graphs and I basically talked about how both arms

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are going to supinate during the downswing. Now it makes sense with the left

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arm even if you think that it's going to do very little of it. If you look at

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at

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this position typically the elbow is pointing kind of there and the back of

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the hand is pointing out that way at impact. So there's the elbow pointing at

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impact. The elbow is still kind of pointing at the target so it hasn't

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rotated as much as the hand but the hand is now pointing closer to the target.

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That's supination that got it there even if it's in a slightly pronated

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position still at this point it is in the process of supinating and then

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through

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impact that elbow is pointing behind you and now the palm is pointing behind

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you

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or the back of the hand is pointing behind you. So it's gone through

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supination. That one's pretty easy to see but what most people would assume is

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that if this one supinates this one's going to pronate and arms are going to

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work more like this. But you could see that if I do that that's not necessarily

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the position that I would want to get in here just after impact. So the way

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that

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pros typically do it is they're actually going to supinate this right forearm.

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Now there's two ways to supinate. One would be I'm not going to move the elbow

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and I'm going to move the hand down in this direction and that would be

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considered supination. The other one is I'm going to keep my hand still and I'm

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going to turn my elbow so it's pointing more at the down the line camera there.

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So like if I go from there to there and the hand doesn't move that is also

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supination. So as much as the golfer is trying to prevent a big internal

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rotation of the shoulder pronation of the forearm kind of like this if the

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forearm or sorry if the shoulder starts to rotate before the palm does that's

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going to show up as supination because my forearm is actually rotating in this

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direction. The supination of that trail arm right around here helps to shallow

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the

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club and match the unhinging of the lead wrist. So one way to kind of think of

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it

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is the lead wrist is rotating like this and the trail wrist is rotating more

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like

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that even though it's going more across the body at the same time that it's

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doing

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it. You can see that the shoulder is coming out of its rotation before the

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hand. If the hand comes out of the rotation before the shoulder it'll be of

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high pronation value. If the shoulder comes out before the hand it'll show up

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as supination. So if you if I go in slow motion and you were to look at this

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right forearm as that's extending the right arm is actually staying facing more

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this way and it's my body that's bringing it around that forearm staying

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more this way is supination. So I to me it almost feels similar to like a chest

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pass where the arms would be rotating both this both like that which is

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supination but whether or not you're able to feel that supination through here

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or

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you feel the pronation from impact until follow through that doesn't change the

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fact of what the graph show and they show it pretty consistently that typically

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the elite level golfers are supinating that trail arm from right about here

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until the club is just about here before you actually start to see the pron

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ation.

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So hopefully this clears up a little bit what's going on in the downswing and

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you're able to kind of visualize how this arm how the data would match up with

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what you might feel and while it's tricky to initially get a sense yes in the

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elite level swing both arms are supinating during the downswing.