WEBVTT

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this video is looking at internal versus

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external rotation of the trail leg so we

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had a question about the transition

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movement of the trail leg basically

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there are two different patterns and

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we'll take a look at a couple examples

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at the end of this video but two

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different patterns one would be seeing

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kind of this look of what looks like

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external rotation where the knee stays

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pointed a little bit more at the golf

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ball as the belt buckle turns away in

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the pelvis

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kind of rotates or to where the pelvis

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and the knee kind of rotate together and

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it almost looks like internal rotation

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but it's probably more of just the femur

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staying in the same relative position to

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the pelvis as the pelvis rotates so

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you'll see these two different patterns

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and the question was basically what's

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the deal alright why are there these two

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different patterns and what do you need

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to look out for with each of them

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so the basic answer is that there's

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these these two different patterns arise

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from where my weight is distributed what

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muscles I'm using and where it whether

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I'm more on my left side or my right

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side so you can experiment you can kind

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of feel these two different movements if

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you stand up out of your chair so the

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trail the external rotation would be if

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I do kind of that trail leg push where

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I'm going to basically rotate my foot

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outward and slightly behind me that

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trail leg push will tend to create more

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of that look of that external rotation

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that's also a lot easier if I keep my

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upper body or keep my pressure more

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through this right foot if I get on all

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my weight onto this left foot it's very

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hard to kind of create any pelvis

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rotation while just doing that trail leg

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push the last piece would be if I stay

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in my heels it'll be a lot easier for me

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to push through that leg in this

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external rotation fashion so the

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opposite is going to lead towards more

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of this internal rotation fashion to

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feel what that's like get more into your

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toes get more into this lead foot and

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then

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basically use kind of the quad to push

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against the ground and kind of pivot

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like so where I'm basically pushing with

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just the tip of my foot

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using this quad and the kind of inner

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thigh muscle on my left leg to rotate my

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belt buckle in my pelvis so one is a

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little bit more of a trail leg and more

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towards the heel and the opposite is

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more of a toe and lead like so what

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you'll frequently see is you'll

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typically see a little bit more of this

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trail leg push when we're looking at the

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driver and then you'll frequently see

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more exaggerations on this lead leg when

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you're looking at the iron not everyone

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will demonstrate the lead leg pattern

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but you'll tend to see it in juniors and

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females especially those who hit the

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ball a long way for their relative size

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so guys like Rory McIlroy Jamie said Lao

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Ski tend to have a little bit of this

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internal rotation pattern and basically

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what's happening is in order to really

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spike that lead foot in order to create

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a lot of vertical pressure so that they

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can create friction so that they can

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rotate their lower body they're going to

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really get into that front leg and then

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once they're in that front leg they can

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use that quad to kind of help them

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rotate as opposed you'll you'll tend to

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see a little bit heavier golfers and

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you'll tend to see golfers with a little

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bit more muscle mass using a little bit

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more of that trail leg push so the

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question becomes what do I do about it I

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don't think this is one that you

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necessarily want to try to coach out of

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a young junior you want to train it out

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of it in the gym or with posture work

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because what can happen then the major

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red flag is if you get too much into

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your toes your pelvis will tend to shift

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forward and when you do this movement

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you'll be using a little bit more of

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your QL muscle or one of the muscles in

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your back and so it can potentially

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really cause some lumbar instability or

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potentially even some lower back pain

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at the very least it can cause that

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upper body to get a little bit steep in

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contact so it can cause some sequencing

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issues when it's kind of exaggerated so

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the better option is to use kind of

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really good pelvic stability and

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especially if I'm hitting a driver have

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a little bit more of this trail leg push

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as opposed to a little bit more of this

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kind of spike the front foot and kind of

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rotate but again I wouldn't I would make

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most of the corrections to that pattern

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through balance in the gym because

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especially your young juniors and

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females are gonna have a hard time

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creating enough vertical pressure while

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using that external rotation model until

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they put on enough muscle mass so now

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let's take a quick look at the two

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different options so this would be

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option one we'll look at two different

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golfers a Robert Rock here on the right

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this would be kind of more of that trail

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leg push and your two references that

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you'll want to look at are kind of the

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center of the kneecap and the hip joints

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gonna be somewhere right around there

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and you can look at how the foot is

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working as well so you'll see that as he

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goes to transition you'll see that his

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hip where his pelvis is rotating around

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I guess a better landmark would be

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looking at the Bell Buckle as it

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compares to the knee

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but you'll see that from the top of the

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swing the belt buckle is kind of leaving

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behind the knee and so it creates more

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of this almost straight line of push

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look so then over here on the Left we

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have Sam Snead a little bit slower frame

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rate so we'll see you somewhere where

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he's kind of pushing through that knee

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which stabilizes that Neen is you'll see

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his belt buckle work away from the knee

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so that would be a little bit more of

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that trail leg push model utilizing that

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right glute to rotate the pelvis away

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from the lead trail leg now we've got

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the second option so we'll see

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typically with skinnier golfers who hit

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the ball

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Longway you know you'll tend to see

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there's this pretty pronounced kind of

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drop or kind of spike into that lead leg

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more so than a push from that trail leg

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so you'll see during transition he's

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dropping into that lead leg and as he's

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doing so this knee is kind of staying

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with the pelvis and as the pelvis

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rotates kind of pulls the knee with it

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so he's not really rotating this femur

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he's not pushing through this leg to

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drive the pelvis that way he's using his

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inner thigh he's using his right quad

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but he's not really using the hip

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rotators to drive the pelvis so here's

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what happens when they get older we

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could look at Jamie said Laos key or

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rory mcilroy and you'll see that it's a

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little bit more of that spike that lead

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leg and the knee kind of comes a little

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bit more with it rotates with the pelvis

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now one of the interesting ones is we'll

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take a look at a billion MOA and you'll

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see that she does a little bit more of

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that trail leg push with a driver than

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she does with her iron okay so I wasn't

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able to find a good face on iron but you

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can see here with kind of a hybrid

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you'll see that knee start working with

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the pelvis as she kind of really gets

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into that left side gets into that lean

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side

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we're over here on the right you'll see

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that as she stays a little bit more

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behind the wall pressure is kind of

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going through that trail leg not quite

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as much into that front foot you'll see

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she doesn't have quite the same amount

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of that lead leg drifting in with it so

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these are subtle differences but you'll

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see the over overall pattern is when you

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have a very light golfer trying to

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create speed they're gonna have to use

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more of that vertical pressure and so

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they'll tend to have more of that lead

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leg driven push and rotation so the

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trail leg will just kind of come with it

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where if you're

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a little bit stockier or if you have a

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little more mass too you don't have to

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spike the vertical pressure quite as

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much so if you see someone who has this

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look of with the tremendous vertical

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pressure and look of internal rotation I

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think it's something that you train in

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the gym and as they get stronger I don't

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think it's necessarily something you

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coach out of them you'd want to coach

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more of the AB conditioning glute

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conditioning so that the pelvis can work

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in a really strong fashion and the lower

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body mechanics as you've seen with Jamie

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said illowsky or if we looked at with

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rory mcilroy you'd see can still work at

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a very high level you just have to be

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careful about the tendencies that come

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up with any of these movement patterns