字幕表 動画を再生する 英語字幕をプリント What's up, guys? Jeff Cavaliere, ATHLEANX.com. Today I’m going to show you how to fix plantar fasciitis once and for all. All right, guys. If you have plantar fasciitis you know it. It’s one of those ailments that you instantly know you’ve got because you’ve got that defined heel pain. Almost that sharp, knife-like pain in your heel. Especially when you get up in the morning, you take that first step, and it feels like someone is ripping the under foot apart. That is essentially what’s happening there because the plantar fascia – which we’re going to show with this piece of band here – is absorbing stresses that it never has to in the first place. The problem is, all our focus and attention when we go for treatment is on this plantar fascia. That’s the mistake because, again, this is not the cause. This is the result of what’s happening somewhere else. So, when we look at the foot, when we look at the plantar fascia, we know what it does. It’s supposed to attach back from the heel, up toward the toes, and its main function is to provide some support for that arch that we have in our foot. A lot of us don’t have it. I have none because I have an extremely flat, pronated foot. Well, it’s supposed to provide some good support for the arch. What it’s not supposed to do is have to provide support during propulsion and to absorb all the forces of propulsion when we move our body. That’s what we’re asking it to do by having things wrong with the mechanics of our ankle, or our knee, or hip, or even our back. Literally, our midback can cause issues down here and you have to address those. If we’re talking about this, why is it so important? Because it comes down to the heel. You can see here with the heel, there are a couple of states I want you to see, guys. The first thing is, we know we have mobility of the heel. This is the calcaneus. We know that it can move either in this way – inverted – or it can move out – everted. When it moves out, that’s associated with this ability of the mid foot to adapt to the surface that it’s on. It becomes a lot looser. So, if I take this, and I move it out – you can do this on your own foot, by the way. You’ll feel this. If you move the heel out you can see that all the joints in the mid foot are nice, and loose, and mobile, and I can twist and turn. That’s what happens when our foot hits the ground. We go into this pronation, the heel kicks out, we go into this pronation, so we have the ability to adapt to the surface. Even if it’s an uneven surface. You want to have the ability to have that mobility to absorb the stresses of that. If your foot was a rigid lever here and it hit the ground every time, there’s nowhere for the forces to go, except up into the knee, up into the hip, or even up into the low back. Which can cause problems. You want that mobile adaption here to absorb those forces. The next thing it does, if I turn it in and I invert it, what’s happened here? All that mobility is gone. You can see this is a lot more rigid here than it was before. That’s a very important thing – and a good thing – because what happens when I want to push off my foot when I’m running? I want it to be rigid, so I can push off and gain a lever and propulsion forward. If it was trying to push of a loose foot, you could see that would be unstable and that’s not really productive, in terms of propelling me any distance with any force. There’s the problem. The problem is, and what happens is, when we get into a position where we need to propel; that foot is in an unstable, loose state. That heel is everted instead of inverted. So how do we fix that? What’s the cause? Well, there are a lot of causes. Let me show you. We come back up. Again, people spend all their lives rolling it out with a tennis ball, getting an ultrasound on the bottom there, doing all the things to try and loosen that up, and that is not the problem, guys. That’s not the problem. You’re going to get temporary relief of a symptom, but you’re not going to get at the cause. So, throw that away. What we do is, if I’m in – let’s talk about walking and running. As I start to walk, again, when my foot hits the ground here, I need the ability to adapt to that surface. That’s going to allow the absorption of forces, so I don’t get too much going into my knee, or hip, or low back. Then as I start to go through and walk through, I need this to lock up, at some point. We need that heel to kick in. So, I get that ability of that foot to the original lever, so I can propel off, and then step through, and then go again. Well, I could tell you this: if you have tight calves, you’re going to lose the ability to do that. You’re going to cause a timing issue down here in your foot that will be felt and absorbed by the plantar fascia in a way that it’s not meant to handle. Let me spell that out for you a little more and show you how that works. Let’s say I’m – let’s work on this side here. As I’m through, you can see that’s the moment and gate I need the most dorsiflexion. Meaning, the bending of the ankle upward. Closing down this angle between my shin and my foot. I need dorsiflexion here. So, as I go through, if I don’t have dorsiflexion – why? Because I have tight calves and I can’t get that. What’s going to happen? I’m going to get dorsiflexion, but not from here. I’m going to get it through that mid foot. How do we get that dorsiflexion here through the mid foot? We have to make sure it’s loose. We have to make sure it’s unlocked. We have to make sure that heel is kicked out. So, what we do is, if you look at it – and I’m going through here. I don’t have any more dorsiflexion, but I know I need it because I need to be able to load this hip up to be able to come through; what am I going to do? At that point, I’m going to take it from here by keeping the heel kicked out by having the foot collapsed down. Guess what happens now? Now, when I got to take a step – and I’m not just talking about taking one. I’m talking about running a mile and taking hundreds, and thousands of steps. Every time, I’m pushing off an unstable foot. A loose, floppy foot. The only thing that can provide support for that is that lousy, little plantar fascia under your foot, which is not designed to do that. Support the arches standing? Great. But to be able to supply the rigidness of the foot to be able to propel yourself? No chance. So now I try to push, and I try to push, and I try to push, and I do that over, and over, and over again; that creates a lot of inflammation and strain in that tendon. Over time, it can cause some tension stress on that tendon this way. Which causes heel spurs to form because of all that traction stress. And it’s just a big mess. But you need to stretch your calves out. So, we talked about some other causes. I’m going to get into those in a second, but what’s the problem? What would you do for your calves? “Well, I’ll just go hang off here. Like this. If I just do this, and I hang down” – this thing is going to fall over on me. If I’m here, and I stretch my calves like this, on the stairs, that should do it.” No. That won’t do it. That won’t do it because you’re not mimicking the stress that you’re under when you’re at that moment in that backside gate that you need to fix. So, what you would do is a stretch over here against the wall. You’re probably saying to yourself “Well, I’ve done this before. Okay, do that calf stretch? Yeah, do that with both your knee bent, and with your knee straight so you work the gastrocnemius and the soleus, and I should be good to go.” Not really. There’s something you’re overlooking here. If you remember, when I took this position, that position of the heel. We said that the problem was that the heel was kicked out at that point. We want the heel to be able to be inverted, kicked in so we can turn it into that rigid lever we can propel from. So, if we’re in that position here, what you want to do in order to turn this heel back in the proper position to be inverted here, you want to drive your foot across your body here. You want to drive your leg across your body. So, it’s not just this way because if I’m doing this, I’m just feeding more into that down, and in position, which is part of the problem. I can turn it on by just allowing my foot to come and reach this way. So, as I reach into the wall that way and stretch back here, now what I’ve done, as you can see, I’ve kicked that heel in. Which has turned this foot into the lever it’s supposed to be. Now I’m stretching out the calf in that position. Just like that. What we can do is make it more dynamic, where go and reach across the body that way. But as I reach in, I’m still pushing down, making sure this heel is in contact with the ground to stretch that calf out. If I wanted to turn in all three dimensions, I could try to rotate back toward you guys there, and you can see that just by rotating, how the heel has to kick in, and I maintain that stretch. You walk away from that stretch and you’re like “Wow! That feels a lot looser.” Now, if I’m in this position here, my heel is better able to absorb those stresses and turn into that rigid lever without having to be thrown onto that plantar fascia, which is the problem. Now, how could other things be causing it, and what could you do? Outside of doing that stretch – which, by the way, a quick way for you tell – if you have pain, say, in my left foot, and you go to test your calf flexibility; if you notice you have tight calves, that is almost always the cause of the problem that you’re dealing with. So, you would stretch the calves like I said. You do this religiously. Every, single day. Just go through it for about three to five minutes every, single day. Sometimes multiple times a day. Over the course of a few weeks, by taking the stress off the plantar fascia that inflammation will go down and your problem will be solved once, and for all. But, let’s say you test your calf on that side and it’s loose. You don’t have any tightness in your calf, but you still have pain there. Well, then you’ve got to look at the other side. Problems in the other side can cause loading issues on that side. So, let me give you an example. We talk many times here about the importance of having glute medias strength, and how a weak glute medias – and squatting alone isn’t going to do it, guys. Deadlifting alone is not going to do it. You need to strengthen those muscles independently. If I have a weak glute medias that does this, we know it’s that Trendelenburg Gate that Jesse demonstrated so well back in that anterior pelvic tilt video. If this drops because this is loose here, what has it done to this foot? You can see what happened. Again, if I put my weight this way, because I have a weak glute medias on this side, you can see it’s collapsed this foot. It’s kicked the heel out on this side. It’s made the arch fall here. It’s created that loose midfoot. So now if I’m trying to run and I’ve got a weak glute medias on the opposite side, you can see how all those things are going to happen to you again. I’m going to have that midfoot trying to propel an unstable foot, and we’re going to have a lot of issues. So, you want to strengthen this opposite side’s glute medias. I’ve done a whole video on that, on how to od that. I’ll link those at the end of this video. But you would do something like, if I was trying to strengthen this glute medias I’d stand up here against a wall, I’d let it drop out to the side, and then I’d lift it up and squeeze in. So, drive this hip toward the wall. This is just going along for the ride. Drive it in, squeeze. Drive it in, squeeze. You can feel it right here, in that glute medias, doing all the work. You can do that – you can even weight it by using a resistance band as well. Now, one last thing. I talked about all the way into the low back, or the midback. How the hell could that have any impact on what’s going on? Well, when you walk, you’re supposed to be able to rotate. You don’t see it as much, but we do. Obviously, as we step, we rotate. With every step we take. So, let’s say I’m able to rotate this way. I’m going to over rotate this way. What happens as I rotate this way? You can see this foot comes down. It goes from here, and down. So, that means if I can rotate in this direction, this is going to come down. If I can’t rotate back, that’s going to cause a problem in our ability to get out of that position here. If I lack rotation in the opposite direction, that’s going to prevent me from being able to – in a magnified way, as we do step, after step, after step, after step, and run, after run – that’s going to prevent me from being able to get off that unstable foot. That’s going to cause a problem. So again, an inability to rotate can cause that foot to be put in the same position. So, you want to maintain thoracic extension because thoracic extension gives you the ability to rotate. I can’t rotate much when my spine isn’t extended.