Oh, really? If I'm going to stop, what movement stops motion? Internal rotation. Thank you. So why do you lower your center of gravity when you come to a stop or change direction?

OK. So why is the base of the neck and the upper shoulders any different from anything else?

It's in an external location. Yes, ma'am. Relative to, so we always have to speak about a relative position because there's no absolutes here, right? So you stepped forward, okay? The sacrum had to move away from that leg to put it out in a direction that you wanted to go that you're now calling forward. Right. Okay. So again, it would be in, it's a weight. You're actually stepping away from the midline of your body, which would be external rotation. Everything has to follow suit. Everything has to follow suit. There's no IR until you have to push down into the ground.

Put them together and then put the heel in there.

Because that's where I have to, that's where I have to land. Right, to get the turn from right to left.

Yeah.

Good so far.

Come back down to where their center of mass regionally was. On the left. Say again. Up on the left. So what do they do on the right side?

Like anytime, if you're training an athlete and they're doing their sprinting, you can hear when they breathe, and you can hear when they like, right? And you'll hear, like, in golf, it's going to be a little bit more subtle just because the degree of violence is much less, right?

Yeah. Where's the expansion?

Maybe. I mean, yeah, maybe. Like you may have started them in hookline or something like that. You may have progressed them to some sort of supported activity that's not fully upright, where you're still capturing IR and ER, that kind of a thing. And then you're going to move them through that middle, and then you're going to do something that's unsupported, which would be your squat. So you've probably been through that.

So, here's the cool thing about that. It tells you what to do. Right. So if you have a wide ISA, you're trying to increase your vertical jump. And you look at the duration of force application into the ground and they jump a certain height. You shorten the duration of the ground contact time. And they jump higher. So through training, you shorten the ground contact time. What would happen if you strategize and start adding in too much slow speed strength training, like at peak force output, but it's slower? What would happen to the vertical jump? You don't know, but presumably if they needed more of the higher impulse stuff and you might take the vertical down.

Awesome.

OK. So can you appreciate the fact that you've got what would be represented as an inverted rear foot? Yes. OK. So if we look at how the muscles attached to the calcaneus Solis will attach more medial to the gastro. And so if we were playing a tug of war on the calcaneus, the Solis is winning. So that's an ER'd foot, right? And for her to run across the ground, she better be able to throw some IR into the ground, right? Yep. How's she going to do it with a foot that does not IR at the subtalar joint? Well, she's going to go further up. Well, she's going to go distal in her foot, right? She's got it. Sorry, I was very excited for that. So she's got to apply IR in front of where she would typically access it, right? So subtalar joint would traditionally pronate, unlocks the midfoot and allows the foot to move through midfoot propulsion, right? She's not going to do that. And she's got to apply that IR into the ground. So what you're going to get is you're going to get an increase in the anti-supination for sure. That's how she's going to apply the downforce. But she's applying a downforce in any gait representation, isn't she? Yes.

So then would this textbook pelvis representation be indicative of most likely adaptability in that system? Like I'm just asking, is that favorable or not?

Maybe if you cut your hair, but I don't want you to cut your hair because I like the hair.

It bends. There you go. Yeah, so you get enough downforce. So, just think about what's going through that lead leg from a downforce perspective, right? And she's got to push down through it.

I'm sorry, Alex took your, your question time.

Gravity. Gravity. Yeah, okay. Yeah, so all of that stuff, all of that stuff is an influence. Okay. Why isn't it just fused? I mean, it does a few things. Yeah, but why isn't it fused? Why do we even have two bones? What's the deal there?

Then I would probably still try to do the exact same thing that we just talked about. Because the pelvic orientation, because think about this, if I leave the pelvic orientation in the right oblique, do you think you're going to capture enough IR on the left tibial? Not really. Because the foot orientation would be wrong. The hip orientation would be wrong. So let's just say you mobilize the knee. Right? Yeah. Maybe you do get some symptomatic relief because of the direct mobilization, but you got a hip and your foot. They're going to tell the knee said, Hey, I don't want you to stay in that, in that state. I want to, I want the knee to go back into ER for me, will you? Right. And so again, I think you're, you're, you're like I said, your intention, like your intention to affect the knee, I'm, I have no qualms with that whatsoever. I just think that you can make the mobilization a little bit better. Right. All right. Just by it, by making sure that you have the top down representation and bottom up representations. So the knee doesn't have to make a bad decision because knees are dumb. Arguably the dumbest joint in your body.

You're welcome, sir. That's an old video. I look good back then.

Well, that's not an archetype. It's a configuration. No. So think about the conical shape of the ribcage. Yeah. OK. So I've got a conical shape of the ribcage that's going to be an influence there. So that means that the amount of pressure that you have at the top is you have the downward bias. So let's just say that you could flip somebody perfectly upside down. That would be like the ultimate solution, right? Because we'd be able to take advantage of gravity and promote the fill, if you will, from the top down. Understanding that the top is now the bottom. That would be the ideal situation. Very difficult to pull off in most training environments. Not impossible, but certainly difficult. So then the next best thing would be to have some form of supported inversion where I would have pelvis higher than shoulders. The only problem you're running into that is that if I'm supporting through the upper extremity, then I have to make sure that I have the upper extremities in a position that they have access to via ER space, superposition of IR. And so this tends to be some of the prone activities that do work, okay? But let me offer you this. Take that person, take a pylon, take an orange construction cone. You know what I'm talking about? Like the pylons that are out on the street. Knock it over, okay? So that's laying on its side. Is the top of the cone lower than the bottom of the cone by the angle.

Okay, wait, so he's going into a cut on the left foot and he gets right hip pain.

Because all the senses, so your connective tissue is filled with sensory cells that sense pressures and tensions.

Maybe. So this is where contact comes into play. This is where muscle activity comes into play. This is where shape change comes into play. So if you have somebody that is compressed anterior posterior, which means that they're expanding laterally, and you're putting them in a flattened position, you may not get the response that you want just by putting them there and hoping for the best. What this would be, though, is from a representation standpoint, it may actually help guide your process. It may allow you to identify when it's not propagating, right? So you can use it as a comparator, versus don't just put somebody there and then expect everything to be all mine and wonderful.

Yeah, because then that's going to tell you what their behaviors are. And then it's always nice to have that little comparison. But again, you're always comparing someone with themselves. So hopefully you can take that example and apply it to an individual. And a lot of times you unfortunately don't have a profile of people before they get hurt.

So that would become more concentric. So like the, yeah.

So, use the finish, as you said, the straight position. That is IR, right? In a perfect world, that would be IR. Most people end up doing it in an ER representation, which is the mistake, which is the problem. They reinforce when we're talking about movement capabilities. From a performance standpoint, if you were a Sumo deadlifter and I was going to put you on a back extension or a reverse hyper, I would teach you how to finish in ER because that's where they're going to end up finishing their pulls. But generally speaking, you're going to want to finish those activities in IR. Right? So if I was trying to teach somebody, the late representation of IR is forced into the ground below your center of gravity. That would be a back extension activity. And again, making sure they can deliver that in the IR representation. This is one of the benefits of something like a Nordic. What the Nordic provides is the proximal shape change in the pelvis into an IR representation. When people start to make ground contact, they can actually shape change into IR so they can start capturing the force into the ground, because if they try to do that in ER, they tend to get a hamstring strain. And what the reverse hyper will do is that is the earlier representation. So that's the IR that's coming up. So I'm trying to hold the IR position as you're internally rotating the hip and not turning it outward into ER. So that's to position the pelvis. In that early phase, when I'm trying to capture the initial internal rotation, right? So if you've got somebody that, if we were to look at a table test, that would be somebody that would not have traditional hip IR available to them. So a great way to do it is actually one leg at a time under that circumstance, by the way.

You're not going left anywhere.

A real quick follow-up. When you see somebody who walks and they have hyper-extensor thrust, is that hyper-extensor thrust? That's when they're going through mid-stance and the knee snaps back really quickly. So what is that? Is that them pretty much skipping mid-stance and going straight to late stance?