WEBVTT

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in this golf smart insight we're gonna

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take a look at the movements of the

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forearms so there are a number of

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different movements that are possible

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with the forearms right first one we've

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got is flexion and extension those are

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opposites and then we've got ulnar

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deviation and radial deviation so this

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is ulnar this is radial or this is a

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deduction this is a deduction then we've

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got pronation sorry supination and

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pronation so supination is when the palm

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faces up pronation is when the palm pace

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is down those are the basic movements of

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the forearm and wrist well just like 3d

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has helped us to understand the

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movements of the spine

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I think 3d can help you understand the

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movements of the forearms and that's

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what we're gonna talk about in this

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video now it's important to understand

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that your body is not just a series of

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levers your bodies is our joints and

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muscles and things that create these

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appearances of letters so the the

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understanding of how the spine and the

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hips and the body moves in the backswing

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has changed a lot right they used to

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teach that you're gonna get in this

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posture and you're just gonna rotate

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around your spine well now we explain

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that okay some people need to feel like

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they give more of a side bending

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movement because to make a good pivot

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and a back swing is actually gonna be a

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blend of some rotations some side Bend

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and a little bit of extension well I

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think the same thing can be applied to

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the form so let's take a look at the

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movements of the forearms and where the

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muscles are that help those movements

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take place so first let's look at two of

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the big ones which is flexion and

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extension now what I want you to do is

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take your hand and place it on your

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elbow just like so so you got one on

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kind of the soft fleshy part and one on

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the back side like so so now if you were

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to flex you will feel most of the

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activity happening right down here on

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the inside your form if you were to then

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extend you would feel that this sides

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relaxed and all the motion is happening

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on this side of your reform or the

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outside of your form now it's important

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to understand that if I was to lay my

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forearm like so and draw a line down the

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middle

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most of the

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lectures they're all connecting on the

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inside of my elbow and they're kind of

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coming across just like so right now if

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I had this facing the other way and I

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was to extend they all connect on the

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outside part of my elbow and they'll be

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coming more from the thumb side kind of

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across like this so what ends up

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happening is when you flex your wrist

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like so the some of the same muscles and

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the muscles on the right side are also

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going to be responsible for some ulnar

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deviation the opposite is true that when

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I go to extend my wrist I'm going to use

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these muscles here and because of most

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of them connect up by the thumb side

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they're going to encourage some radial

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deviation so it's important to

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understand that these two movements are

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a little bit coupled you've got

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extension and radial deviation you get

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flexion and ulnar deviation so how does

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this work or how can you experiment with

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that if you were to radial deviate or

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bring your thumb up like you're hinging

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a hammer and then you were to extend

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you'd feel that that feels pretty

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comfortable and you can see that the

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space between my hands didn't really

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change so now I want you to radial

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deviate or bring that thumb up and then

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I want you to try and flex and you'll

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feel that you get to a point where it's

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just not going to want to stay there and

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it's going to drift towards neutral okay

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the same thing can happen if you were to

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ulnar deviate so now we've got kind of

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the difference right here so we've only

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deviated and now if you flex at stays

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pretty much the same feels pretty

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comfortable if you stay there and you

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try to extend holy cow that starts to

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get hard and it makes it want to come

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back up it's very hard to get any amount

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of real extension while staying in that

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ulnar deviated position so I think you

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can see where this is starting to go

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when we apply it to the golf swing when

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you try to maintain extension of the

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trail wrist it's important to understand

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that that will also tend to maintain

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radial deviation if you are being told

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that we want to try to keep the

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extension of the wrist but you're gonna

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owner deviate or unhinge this way that's

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really hard for the body to do it looks

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cool you know I can

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understand how if you were just looking

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at the levers how that would position

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the club a little bit more from the

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inside and that can make sense but it

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doesn't hold water when you look at the

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actual body movements that are gonna

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happen so let's take a look at kind of

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the critical phase if we look through

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impact what's going to be happening so

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we know that we want those risks to kind

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of be extending away from us right

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they're gonna be going like this so this

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left wrist is going to be going into

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owner deviation for sure the right wrist

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is going to be approaching ulnar

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deviation which is part of the reason

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why you will lose some of the flexion of

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your right wrist when you get into that

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final release phase now the important

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thing with the left wrist is as it as it

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loses some of its flexion it's going to

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want to drift more and more towards

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neutral so if you want to get those arms

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to extend like so you're gonna have to

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maintain some of the flexion or at least

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neutral but you're not going to be able

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to let that left wrist cut through

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impact so what we see a lot is amateurs

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tend to cut that wrist through impact

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that activates some of these flexors and

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now it's going to start quickly working

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up like so we're good players tend to

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keep that left wrist a little bit

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flatter a little bit longer that allows

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them to supinate and that allows them to

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keep that ulnar deviation which gets the

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bottom of the swing farther forward

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longer arc with kind of in the

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follow-through position which helps with

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consistency of contact so this is a two

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major coupled ones but let's take a look

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at the last piece which is pronation

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supination now pronation supination if

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you look at the muscles that actually do

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it most of them with the exception of

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one pronator are up here more in the

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elbow I mean your biggest supinator

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muscles are actually your biceps your

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bicep brachii there's another supinator

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muscle and then you've got your pronator

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is coming kind of one across here and

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one across there the supinator muscles

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are much bigger than the pronator

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muscles so trying to rotate your forearm

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like so is much more powerful than

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trying to rotate your forearm

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like this so what ends up happening is

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you see kind of two different dominant

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patterns you've got guys who get most of

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their speed from supination of the left

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wrist or you've got guys who get most of

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their speed from flexion on the right

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wrist but you rarely see people who are

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getting most of their speed from

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pronating that trail wrist so if you're

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trying to work on getting a little bit

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longer rotation or trying to work on

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getting a little bit more of this left

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wrist supination in the follow-through i

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think it's most important to focus on

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that left wrist doing the movement and

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not focusing on the trail wrist so

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hopefully that doesn't confuse me any

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more and hopefully that clears up a few

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things but if you have any questions

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feel free to email us at golf Smart

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Academy and we'll do our best to get

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more videos out there to help you

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understand how the body is actually

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swinging the club