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The Bill Hartman Podcast for the 16% - Season 16 - Number 3 Podcast
Bill:
SPEAKER_03 12:43–12:48
Now you know what the femur is doing.
femur mechanicsbiomechanicslower extremity movement
The Bill Hartman Podcast for the 16% - Season 16 - Number 2 Podcast
Bill:
Bill Hartman 21:54–22:15
So that's an early foot, okay? I have first metatarsal head contact. I have medial heel contact. Okay with that so far? Generally speaking, we're going to speak in generalities because we don't want to get like crazy specific here, but where's the expanded representation right now? The bottom back. Yeah. So you can see like the tibia is like this great little sort of cue as to where the pressure is being applied. How many ground contacts do I have? Ballpark estimate. So actually the, the met heads and the tarsals.
foot mechanicsground contactexpanded representation
The Bill Hartman Podcast for The 16% - Season 17 - Number 6 Podcast
Bill:
SPEAKER_04 13:24–13:42
The expansion is happening on the right side because if they're going up on the left side, the reason they'd be on the heel on the right side for the simultaneous first move is because there's posterior lower space there.
rib mechanicsrespiratory expansionpostural alignment
The Bill Hartman Podcast for The 16% - Season 18 - Number 2 Podcast
Bill:
Bill Hartman 13:40–13:54
So maybe, yeah, all right. Well, go ahead. If we try to influence those mechanics, we're using a land, let's say a land split squad. Yeah. So if we're using a contralateral load, let's say left foot forward, contralateral load. I can see two reasons why people might do that. First of all, to help someone access into the cat position if they don't have the relative motion to do so. Right? Because it's creating the yielding action.
contralateral loadsplit squatcat positionyielding actionbiomechanics
The Bill Hartman Podcast for The 16% - Season 17 - Number 10 Podcast
Bill:
SPEAKER_03 26:05–26:51
So a lot of times I think of like an ER system as being like more space. But in reality, it's like more space time. So is it fair to say that like a yielding component is partially like an expansion of time in the same way that like, when you're trying to facilitate like an adaptation to gain more ER and you get like a change, like an increase in eccentric muscle positioning, like that would be an increase in space. But if you're trying to gain like a yielding component to it, you're expanding like the time. Absolutely. The strain of that.
external rotation (ER) systemyielding componenteccentric muscle positioningspace-time relationshipconnective tissue behavior
The Bill Hartman Podcast for The 16% - Season 17 - Number 9 Podcast
Bill:
SPEAKER_06 32:26–32:28
Yeah. I'm okay with the muscles. Yes.
The Bill Hartman Podcast for The 16% - Season 17 - Number 8 Podcast
Bill:
Bill Hartman 17:53–17:54
It kicked it a little bit towards that.
foot mechanicselevation effectsbiomechanics
The Bill Hartman Podcast for The 16% - Season 15 - Number 7 Podcast
Bill:
SPEAKER_07 14:28–15:07
Okay. Then you hit the ground up here. You hit the ground. So there's your twist. So, so you, you capture the early representation and then you just keep squeezing it like it, like twisting a towel. You get to the end. There's the stop. Yep. Can't breathe. Correct. start turning this way, and then the same thing happens as you go through impact. Okay, you see it? And then you re-expand towards follow through, right? All of your big motions, all of your big movements are gonna be ER representations, okay? If there's a turnaround, you have to be closing space down, and then you reopen it, and then you squeeze again, there's impact. Then there was your father.
respirationdiaphragmatic mechanicsmotor control
The Bill Hartman Podcast for The 16% - Season 15 - Number 6 Podcast
Bill:
Bill Hartman 21:17–21:34
Cause if I land out here and I keep it, if I keep the foot out on the outside edge, right? It's like, okay, I'm definitely absorbing energy, but what direction is it going to go? I have to do that to get it to go towards the middle. Otherwise I can't turn inward towards the ground, right? Because I need that energy coming towards me to promote the position and the shape change that I need to be able to push into the ground effectively without having to compensate with an orientation of sorts to push into the ground.
energy absorptionbiomechanicsground reaction forcefoot mechanicskinetic chain
The Bill Hartman Podcast for The 16% - Season 15 - Number 5 Podcast
Bill:
SPEAKER_02 23:02–23:27
It's like, do hook line, capture medial foot contacts. Can you do it? Absolutely, you can. If you have the contact, and I'm not talking about putting pressure on the ball. I'm just saying the contact on the ball drops the first met head onto the surface very easily in comparison. Not for everybody, but when it goes, it goes.
foot mechanicsmotor controlpelvic positioning
The Bill Hartman Podcast for The 16% - Season 15 - Number 4 Podcast
Bill:
SPEAKER_01 18:07–18:49
So if we flip that and talk about a wide, is it possible to decrease their IR window too much and make their duration of force application too quick? Or is it that the other thought I have in my head is that you wouldn't necessarily shorten it, but they just aren't training them in what would be the optimal way. So like they're not getting the most out of their training, but they still have the window. Can you actually physically shorten their IR window?
force application durationinternal rotation windowtraining optimization
The Bill Hartman Podcast for The 16% - Season 15 - Number 3 Podcast
Bill:
SPEAKER_01 32:22–32:26
Go ahead. So the duration is that, is that one of the key pieces?
force durationexercise programmingmovement efficiency
The Bill Hartman Podcast for The 16% - Season 15 - Number 2 Podcast
Bill:
SPEAKER_01 23:02–23:20
So let me back up and go to her. OK, let's see if I can get there we go. So if you look at her rear foot, you see that? See the twist in the rear foot?
rear foot mechanicsgait analysisrunning biomechanics
The Bill Hartman Podcast for The 16% - Season 15 - Number 1 Podcast
Bill:
SPEAKER_01 14:31–14:40
And by textbook representation, we mean what's considered normal by the people that use the words that makes you vomit or like the ideal we're striving for.
textbook representationnormal anatomyideals in anatomy
The Bill Hartman Podcast for The 16% - Season 14 - Number 10 Podcast
Bill:
SPEAKER_07 14:59–15:05
No internal rotation.
pelvic mechanicsinternal rotationmovement assessment
The Bill Hartman Podcast for The 16% - Season 14 - Number 9 Podcast
Bill:
SPEAKER_02 18:19–18:21
It's not going to go like that.
rib mechanicsrespirationpostural assessment
The Bill Hartman Podcast for The 16% - Season 14 - Number 8 Podcast
Bill:
Bill Hartman 18:05–18:17
Yeah. Yeah. You ever seen somebody that kind of turns pretty well when they're standing up on their feet and then you sit them down and then they can't turn as well?
movement assessmentpositional effects on mobilityrotational movement
The Bill Hartman Podcast for The 16% - Season 14 - Number 7 Podcast
Bill:
Bill Hartman 26:15–26:16
Okay. Good. What makes it move?
muscle functionbiomechanics
The Bill Hartman Podcast for The 16% - Season 14 - Number 6 Podcast
Bill:
SPEAKER_04 15:45–15:51
All right. And so I'm on the right oblique, which side has more ER? You're up in the left left. Yeah. Okay. Is that where you want to mobilize the need to capture an internally rotated state? No, on the left side, we're talking about the left side. So I would probably, under most circumstances, sequence it as we described earlier. So what I would do is I would intentionally try to put the pelvis on the right oblique with the nutated sacrum. I would mobilize the right side. I would flip-flop the orientation of the pelvis and then turn it to the left and then mobilize the left knee under that circumstance. Because in both circumstances, I'm going after an internally rotated representation.
pelvic mobilizationinternal rotationoblique musclessacral nutationknee mechanics
The Bill Hartman Podcast for The 16% - Season 14 - Number 5 Podcast
Bill:
Bill Hartman 26:52–26:54
So they're not the same. They're not the same.
force productionvelocity strategyIRD representation
The Bill Hartman Podcast for The 16% - Season 14 - Number 4 Podcast
Bill:
Bill Hartman 16:36–16:41
No. It would be like a medial knee pain.
knee painbiomechanics
The Bill Hartman Podcast for The 16% - Season 14 - Number 3 Podcast
Bill:
Bill Hartman 33:44–36:11
You don't want to do that because you're going to gain the wrong shape and you're going to perpetuate the external rotation orientation. A much better strategy is first to determine why you're not getting the foot contact. You might have somebody that is significantly oriented into external rotation, and that needs to be addressed first. If it's a proximal to distal superimposition of the external rotation, very much like we talked about with the mandible, we'll see the same representation in the hip. You need to address that shape first, which might require something done in sideline, perhaps that's going to give you some lateral compression to gain the anterior-posterior expansion back, allowing you to capture those medial foot contacts without compensation. Having said that, there are other strategies that can reduce the concentric orientation in the foot itself that are interfering with capturing medial foot contacts. This would be associated with concentric muscle activity on the bottom of the foot. If you don't use hands-on treatments, then you can use something like a lacrosse ball or something you're rolling with your foot to help reduce some of the concentric orientation on the bottom of the foot. That may allow you to access those medial foot contacts. If that doesn't work, there are some banded mobilizations that you can utilize that will help promote the bony influence you're looking for. But that's a little beyond the scope of this call because it's very difficult to visualize. The key is that there are strategies to access those foot contacts, but the first thing you need to identify is why you're not getting them in the first place. If you try to accommodate the foot to the wall, all you're going to do is promote the wrong shape in the foot, because that's the idea behind the exercise.
foot mechanicship external rotationproximal-distal relationshipsexercise adaptationsoft tissue mobilization
The Bill Hartman Podcast for The 16% - Season 14 - Number 2 Podcast
Bill:
SPEAKER_05 12:39–12:46
And forward and back. If you roll the top side forward, you're going to create the delay representation on the downside. If you roll past midline, back in the other direction, if you're doing it correctly, you would create the delay on the upside. So you're laying dead center middle on your side and you're just, you're doing sadness.
rib mechanicsrespirationconnective tissue
The Bill Hartman Podcast for The 16% - Season 14 - Number 1 Podcast
Bill:
SPEAKER_03 20:05–20:26
So what this is is just a great representation of the systemic response to the change in volume. When you breathe in, if all relative motions were accessible, the entire system progressively extends and rotates. What you see is the expansion associated with the inhale, and then you just see it propagate throughout. It's really difficult to see your fingers externally rotate. The premise that I want you to understand is that you literally just see it spread out. Then as you exhale, the compression then resolves, just like if you were standing on the beach watching the waves coming in and out.
respirationbiomechanicssystemic responserib mechanics
The Bill Hartman Podcast for The 16% - Season 13 - Number 10 Podcast
Bill:
SPEAKER_03 23:32–23:34
Yeah. You just put more weight on the bar.
force outputweightliftingimpulse
The Bill Hartman Podcast for The 16% - Season 13 - Number 9 Podcast
Bill:
Bill Hartman 26:10–26:31
And so if we're talking about the right knee as you go down towards 90 degrees in a squat, does the posterior medial aspect of that right knee move towards a concentric orientation? Is the tibia starting to internally rotate?
knee biomechanicssquat mechanicstibial internal rotationconcentric orientation
The Bill Hartman Podcast for The 16% - Season 13 - Number 8 Podcast
Bill:
SPEAKER_05 19:41–19:47
I mean, like the early representation of ER or IR versus the late representation of IR?
IR/ERearly representationlate representation
The Bill Hartman Podcast for The 16% - Season 13 - Number 7 Podcast
Bill:
SPEAKER_01 13:07–13:08
And what direction will I go?
The Bill Hartman Podcast for The 16% - Season 13 - Number 6 Podcast
Bill:
SPEAKER_02 15:04–15:04
Yielding.
muscle activationbiomechanicsmovement patterns
The Bill Hartman Podcast for The 16% - Season 13 - Number 5 Podcast
Bill:
Bill Hartman 25:38–25:41
Like oftentimes I'm— Give me a for instance, it's in your head.