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You guys already know the three rules of
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muscles we talked about it yesterday, but
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the muscular system, all of the muscles that cross a joint are going to play a
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role in joint motion, all of them. Think about that for a second. All of them have
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a role to play. So when we learned all the muscles of the shoulder yesterday, and we
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learned that the pectoralis did this, and the posterior deltoid did that, and the rotator
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cuff did this, realize anytime you move they're all on, doing something. All
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muscles act in multiple planes to concentrically accelerate, isometrically
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stabilize, and eccentricly decelerate motion. Another one of those things for
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you guys to start letting circle in the back of your head, every muscle you can
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think of has its function are those three functions depending on what the
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movement is. Some muscles and this is this is one of the next steps in your
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learning, in your analysis which we started working on yesterday, is to start
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thinking in functional groups. The reason I graph you guys to death is to start
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getting you to think in groups of muscles, not just oh yeah my PEC does
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this, that's great if all you're going to do is be a gym rat. If you're going to be
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more than a gym rat you're going to create some really sophisticated
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routines to push performance forward regardless of the sport, from
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bodybuilding, powerlifting to basketball to football to lacrosse
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whatever it happens to be, you're going to have to think a little bit bigger
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than that. When I say internal rotators of the shoulder, you better be thinking
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more than pectoralis, you guys with me.
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The fascial system, we talked a little bit about what the fascial system does. We
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talked about it a little bit this morning ,we talked about a little bit
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during core, let's talk about how it affects movement. It transmits force from
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one muscle to another, right there's some of these pieces of fascia I told you
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like, we keep talking about this thoracolumbar fascia, it also connects my
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glute to my latissimus dorsi. So it'll help transmit force from lower extremity to upper
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extremity providing I have a nice stable core through this piece of fascia, it'll
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help. It'll restrict motion if it becomes adaptively shortened. So if a fascial
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system becomes tight or bound one layer to another, that's going to affect motion.
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Elastic recoil that you were just talking about the elastic limit right. So
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the elastic limit of fascia is different from the plastic limit, we could get
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really really far on this, but just power movements what you're kind of doing is
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taking fascia into its elastic limit, what do you guys know of elastic bands
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they'll break them if you take them all the way too far, so you can't take them
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too far, that is kind of what happens during a strain right. But if I take it
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to an elastic limit and then I let go what happens? Force is produced right, the
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fascia didn't contract it recoiled. Power training is about matching that to what
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other thing that's going to help you produce force? Concentric contraction of
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muscles, you guys with me there on top of stretch reflex.
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So that's part of how the like, you guys have heard of plyometrics before right,
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it's an eccentric load, stimulate my attic reflex, take fascia into that
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elastic range, and then I consciously concentrically contract and try to match
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those three things. Oh densely invested with proprioceptors. There is a good
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chance that fascia is a sensory organ unto itself. That little thing we just
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did right fascia is densely invested with receptors. I have a little fascial
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hypothesis that these big pieces of fascia like your thoracolumbar fascia,
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your abdominal sheath, your iliotibial band are like nature's motherboard. You guys
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know a little bit about computers right, what does a motherboard do in a computer?
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It holds a lot of vital stuff right so that this information can ping off the
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motherboard and go back and do whatever the computer needs to do. From the way I
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see this fascial research, one of the things that we can start to look at is
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if two muscles connect to the same fascial sheath there might be something
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there about how those receptors within that fascia affect the tone. That's not
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the fake tone that's not how it looks, but the activity level of those two
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muscles and how that's going to affect a motor plan. If you pull on this fascia it
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might tone up this, muscle tone down this muscle which is going to affect force
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production and how we move. Does that make sense? It'll make a little bit more
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sense once we go through all the roles muscles can play.