Good morning. Happy Sunday. It is time for this week's Q&A. Ugly sweater edition. If you think that's funny, look at this. I got two. And I still don't know who sent these things to me, but let's dig into this week's Q&A. Got my neural coffee. I'm ready to rock. So, quick review of this week on YouTube. If you haven't seen last week's Q and A, it is up there on YouTube. Also, the iFast podcast number seven, this might be interesting to many of you because we talk about continuing education as to what we think are the what's, the how's, and the why's. I talk a little bit about the intensive as well, so you might find that of interest. Also, through up this week, video concerning the influence of orientations. We're talking about orientation of the thorax and the pelvis in regard to how it influences your range of motion measures. So you might find that interesting as well. Up on Instagram, I threw up a couple clips from the iFast podcast and also the influence of orientation videos that were on YouTube, so I put some segments of that on Instagram. In addition, I threw up a segment from the cutting mechanics video, which you might find interesting as to how the public diaphragm behaves during those cutting mechanics. We introduced Cartoon Bell this week. It was just kind of funny, just a little thing that I did that turned out to get a lot of attention. And then we had a Terry project update. So if you haven't seen that, it's been pretty fascinating to see how Terry has changed over time and showing his level of commitment to making some changes to his posturing. Terry's a dancer and so posturing is very important to him. And then of course the videos for the 16%. So now let's dig into this week's Q&A.

And then the opposing archetype is someone that has an exhaled axial skeleton with an inhalation compensatory strategy. That doesn't mean that they can't present with very similar peripheral measures. Now, having said that, Greg, since you didn't give me a full chest board, we can't give you an exact recommendation as to how we would move forward and intervene with these two people, but you do have some tells there. So you do have a couple of coffee cups. So when you look at the hip extra rotation limitation, and then you look at the excessive extra rotation on the right. So those two measures, so the extra rotation of the shoulder you mentioned was greater than 90 degrees on the right. and the hip external rotation measure was less than normal on the right as well and so what those are indicating to you is that you've got an anterior orientation of the pelvis and a posterior orientation of the thorax on the right side and so those are very telling in regard to what you might need to do to intervene because you've got a superficial strategy there. You've got a strategy that's above the pelvis and below the scapula that you're going to need to address first once you've established the dynamic ISA. So take your ISA measure that's going to initiate your interventions and then you've got to eliminate the superficial strategy. So hopefully that gives you a little bit of guidance in regard to what you're asking me. But again, without laying out the full chess board, we can't give you a first intervention. You're going to have to do that one on your own.

What you may be dealing with is someone that cannot reorient the knee to allow normal knee flexion to occur. So heel to butt knee flexion is actually a really decent test that you could use to identify whether they're able to reorient the tibia or not. And then you can look at isolated tibial internal rotation, external rotation measures, and you can identify any deficits there. If you do have full heel to butt, but you have limited tibia femoral internal rotation, then you've got some serious eccentric orientation on that posterior medial compartment that's allowing a volumetric expansion on the anterior medial side of the knee to occur, and so you're going to have to address that to sort of untwist the knee if you will, and allow that tibial pyramidal IR to return and restore normal knee mechanics. But Marcos, I think you are absolutely on track with what you're perceiving, assuming you've got confirming tests that give you that information.

There would be so much greater stress load on the compression and tensioning elements of the human body. And it would be very, very destructive. And so again, the helices make it very very efficient for us to move well. The physical structure of how a helix is actually formed is very energy efficient so that follows the rules of the universe without getting too mystical if you will. So again we're just following the simplest of rules when we're talking about structure and the helix provides us the greatest element of efficiency and so that's why we're constructed that way but there's a lot of hints in the the biology, the physiology, and the physical structure. So please check those out.

So if I elongate the pelvis in this direction, what I'm doing is I'm turning the ilium such that it elongates in this direction, which would elongate this segment as well. And so in this element, we look at the musculature that's attached posterior to the hip that we would say is an external rotator. And so here, I would say that I've got my superior gemelli, I've got the external portion of the obturator internus, I've got inferior gemelli, and then I've got quadratus femoris. And so those are analogous to the infraspinatus in the shoulder. So it's very, very simple. So if I orient this such that I bring the two ends of the muscle closer together, as I elongate this, it's going to turn and open this way because I've got expansion in this direction. So if this turns and orients as such, I bring the two ends of the muscle close together. So that creates a concentric orientation. That creates external rotation and that steals my internal rotation. So this is actually really, quite simple. So it's the anterior compression on the front that allows this to expand posteriorly. I get a shape change in the pelvis. I get a reorientation of musculature on the backside of the hip. So on the front side of the hip, and this will typically happen with a narrow IPA by the way. So with a narrow IPA, I have an expansion strategy here that prevents me from turning inward. So again, I have this perfect storm of losing internal rotation and gaining external rotation.

and so if we move up into the thorax and we close off that dorsal rostral area, which is equivalent to nutation, you're definitely gonna see the neck move into extension just as you described. So well done, Eli. Keep up the great work and keep up your offerings. I truly appreciate it.

So my next question comes from Justin and just asks, can you break down the shape change of the pelvis and behavior of the pelvic floor during acceleration of max velocity sprinting? Absolutely. Justin, what I want you to do is I want you to see the cutting video that's on YouTube because the public diaphragm mechanics are going to be very, very similar to entering and leaving the cut because the pelvic diaphragm is behaving such to position the extremities and then to produce whether the positioning strategies or the propulsive strategies and so if I grab my pelvis here if I'm orienting the extremity, whether I'm accelerating or whether I'm at top speed. So basically we're looking at that type of an orientation. But to position the extremity in line, so we're near that zero degrees of hip extension or we're talking about a max propulsive strategy. So to position my extremity, the anterior pelvic diaphragm is going to eccentrically orient to allow that extremity to be positioned there. As I apply force to the ground, I need an overcoming strategy. So now I'm going to become more concentrically oriented and overcoming to produce the force. And so again, the difference between acceleration and the top speed mechanics in this circumstance is how quickly all of this occurs. So when I'm accelerating, I have a lot of ground contact time. And so the transition from the eccentric to concentric will be much, much slower because again, I'm not moving as fast when my ground contact times are longer. At top speed, as I strike the ground, I'm there for a split second. And so I'm landing and propelling very, very close to max propulsion. So in the flight phase of top speed, where I'm no longer in contact with the ground, My anterior pelvic diaphragm is going to essentially orient to position the extremity below me, relatively speaking. And then as I hit the ground, I get this incredibly fast propulsive phase that allows me to continue to propel myself. And so again, that would be the biggest difference between acceleration and top speed, but as far as the ability to orient the body in those positions, the same strategy has to occur because they're relatively the same position. Again, the only difference would be how quickly the forces that are being applied create this transition from an eccentric to a concentric orientation. So hopefully that sheds a little bit of light on that for you. And again, if I need to clarify that more, please ask another question. So that wraps up this week's Q&A. Hope it was useful. If you have any further questions, please post them or send them to me at askbillhartman at gmail.com. Happy to answer those. I got a couple questions that I'm gonna roll over into some morning Q&A for next week during the holiday week. So be looking for those. Enjoy the rest of your Sunday.

Hope you got your neuro coffee like I got mine and we'll see you next week.