Couple of things. A narrow system by design is a lower pressure system. You could have a smaller surface area of the diaphragm, resulting in lower pressure. Potentially, there's a greater distance top to bottom, which would distribute pressure over a larger surface area through the axial skeleton, resulting in lower pressure. An e-centric orientation of the anterior outlet by bias also results in lower pressure. So put your arms like this, straight up and down, straight up and down, okay? And then go like that. Okay. Did you close the space at the top?

Right. And yeah, and you also need an earlier pelvis. So if you're in prone and you're getting the late representation at the pelvis, it's going to affect the depth.

Gotcha.

So the production of like, so the increasing amount of force that you're producing as you've come from left to right, that is a product. It's not a product of the like amount of weight itself because the load is fixed, but it's where your center of mass has to go because if it's offset, I have to move my body left and then I'm naturally bringing it over the right side.

Yes. So they're just demonstrating how challenging it is, and you get to choose to what degree the compensations will be allowed because during force production, you're going to lose relative motions. The question is how much. Do they lose it very quickly or at the end of the motion, which is where it should disappear? That's what distinguishes a good push-up from a bad push-up. At the end of a good push-up, there's still no relative motion, but you had relative motions to get there.

COVID, no cadavers.

I'm a DJ, please. Good morning.

Morning, Bill. Great. So I was questioning some cues I've picked up over the years, like in powerlifting and weightlifting, and trying to translate them into this model. One cue I was thinking about is pulling your shoulders back and down. You hear that for bench, deadlift, squat—shoulders back and down. Based on how the shoulder works, it's like the hip with internal and external rotation, but that movement doesn't really translate to back and down. When I tried this myself, something else was moving. When pulling back, I felt DR compression in that area orienting the scapula back. To go down, it felt more like orientation at T5-T6, so more spine than actual scapular movement. I was wondering what your thoughts are about that, and if what I'm feeling is correct.

No.

Yep.

You're magnifying the ER orientation.

Greetings. My question is regarding one of my clients, a football player. Five weeks ago, he underwent knee surgery due to an ACL injury on his left side and a lateral meniscus injury. However, during the surgery, they did not operate on the ACL because it was only partially ruptured, and they only repaired part of the lateral meniscus. When he came to me, I believe he had approximately 20 degrees of external rotation on his right side. As he is an athlete, through training, we gradually improved his external rotation to about 35-40 degrees on both sides. He is quite adaptable and making good progress. The issue is that he still experiences a pain sensation, which he describes as being on the medial side under the patella. This pain occurs in various situations, such as when I have him perform a left wedding march, specifically the left-left-left-left wedding march.

Yeah.

It's going to take me, I know how many years I developed, you know, devoted to heavy lifting is going to take me that long. I just, Yeah.

Okay. Yes, I understand.

And then you might get a big bang out of it. Like you might get a whole lot.

Yes.

Not these days. I'll typically use a high box, but yeah, I get the principle.

So thinking steps, backwards with right foot only, then alternate, and then turn him go right to left.

Yeah, I kind of did. We gave names to stuff and then it's like, oh, we have this immediate representation. And instead of looking at, oh, what's the similarities here? Because if you start to see the similarities, now you write coherent programs.

Gotcha.

Okay. So you have to understand starting conditions and then the ending conditions and then how did they get there? Okay. And it's, it's that simple. Okay. It's never simple when you're dealing with human beings, but it's never simple. All right.

Without question, without question, because the constraints are different, right? So, thankfully Cameron and I are both rather mobile, okay? He more than I, but point being is like we don't have the constraint deficits that you're now dealing with, okay? So, let's think about this for a second. Do I have a pelvis that can change its shape? Yes, you do. What I don't have is the motor output to change the shape. Okay. All right. Does this person have an AFO on their ankle? No. Do they have normal ankle movement available to them? Do they have normal ankle force production? Okay, hang on. So why aren't you putting that ankle and foot in a midline propulsive representation to drive midline up from the ground? So this is how you have to start to think about this. It's like, okay, so I don't have a motor output to change the shape, but I know that they can change the shape—they're still human, right? So now I have to figure out, okay, where do they lack the ability to capture position? They can't capture an IR representation; this is an ER representation on the right side of the pelvis at all times. How can I create the best representation of IR force production into the ground? So if I got a foot that is floppy, so to speak, right? So it does not have enough muscle activity to capture a midline propulsive representation. But guess what? I can add a constraint. I can put them in an AFO. Now with the ground up, the information from the ground up is midline propulsion. Okay. Do you follow me so far?

The feet that you're looking at are somebody that is fighting gravity and pushing so hard into the ground that she cannot change shape. You have to get her away from the ground. So her toes are kind of like this.

Yeah.

Yeah.

No problem. I have many questions. I recently heard that it's a good idea to write them down, so now I'm collecting them and think I'm qualified to send you an email. The one I chose from my new bunch of questions is: what's the role of the concept of entropy in your model? I've been exposed to systematic visualization more from the psychology world, so now I'm kind of thinking: what's the role of titrating, breathing, or moving with limited tension? Is it just a way to warm up an engine, like in a car where something is meant to bring down the level of heat? Is that what we're doing?

The right hand, it looks almost complete. It almost clears up the limb.

Okay. But as long as you understand what they're trying to do, they're trying to push harder because, again, the force downward exceeds their ability to manage the force itself. And so they have to use a compensation. And it's an IR compensation.

But again, this is why diagnoses start to show up. It's because, again, I don't have this distributed representation of how things should work. It's like, OK, herniated disc. Well, what is herniated disc? That's a focal yielding action that's taking place in connective tissue. Because I didn't have a distributed representation through all of the connective tissues that you talked about at the beginning of your question. It's like, if I don't get this distributed yielding action at the base of the sacrum and I get a focal yielding action at L5S1, now I have a herniated disc.