I\u2019m happy to welcome Dr. 帕特·戴维森 back to the podcast.\u00a0 Pat is an independent trainer, consultant, author, and lecturer in New York City.\u00a0 He is the author of MASS and MASS2 and is the developer of the \u201cRethinking the Big Patterns\u201d lecture series, as well as an upcoming book 上 the same topic. \u00a0Pat is 上 e of the most intelligent individuals I know when it comes to human performance, and communicates his knowledge in a manner that makes it easy to understand difficult concepts. \u00a0He has been a guest 上 episodes #88 and #122 of this show as well speaking 上 topics such as an educated approach to movement screens and re-evaluating the \u201cbig lifts\u201d in light of athletic performance. That combination of intelligence and communication is paramount for the topic we\u2019ll be tackling today, which is pressure systems and their correspondence to our movement patterns.\u00a0 That sounds kind of complicated, but in reality, it\u2019s as simple as looking at the dynamics of a bouncing ball, or the lungs expanding with air. \u00a0Pat has extensive experience learning from leading organizations and individuals in this area, such as the Postural Restoration Institute and Bill Hartman. The ability to look at the human body as a pressure system is important because it helps us link what is happening in various gym exercises, as well as what we see in particular athletic presentations (internal vs. external rotation for example), and then look at how that fits to an elastic (tendon and static spring) based strategy of movement, and a more muscular strategy. In addition to a discussion 上 pressure, Pat also discusses his take 上 having a \u201cstrength score\u201d for athletes in the weight room that normalizes performance metrics based 上 things like limb length and height.\u00a0 He also gets into ideas 上 how to \u201cde-compress\u201d the athlete who is compressed in a manner that may be negative to their overall performance.\u00a0 This was a really smart show with some powerful principles for any athlete or coach who wants to navigate the weight room without harming elastic power outputs. Today\u2019s episode is brought to you by SimpliFaster, supplier of high-end athletic development tools, such as the Freelap timing system, kBox, Sprint 1080, and more. View more podcast episodes at the podcast homepage Timestamps and Main Points Pat\u2019s history of athletics and his recent thoughts in regards to normalizing weight room outputs across a variety of athletes with different heights and levers Implications of athletes who \u201cover-lift\u201d in dynamic outputs and what physiological elements are playing a role in diminished movement abilities Expansion and compression rules in regards to the movement of the human body From a rib-cage perspective, what happens when the body becomes too compressed from a front-to-back perspective that often happens from excessive bilateral lifting My personal journey in barbell squatting and Pat\u2019s analysis of my tendencies towards compressive forces that allowed me to retain my elasticity well (and how I ended up hurting that elasticity later 上 ) How to work with athletes with substantial anterio-posterior compression to get into becoming more elastic and robust \u201cWho measures the distance (of a lift), nobody measures the distance.\u00a0 It\u2019s half of the equation of work\u201d \u201cYou get punished in many ways, in the reward system of the weight room.\u00a0 If you go full range, and have to use less weight, that\u2019s a \u201cpunishment\u201d.\u00a0 If you have to do less reps, that\u2019s a \u201cpunishment\u201d.\u201d \u201cYou are going to want to make progress so much (in the weight room) you will lie to yourself (by subtly cheating lifts)\u201d \u201cYou can recognize people that have done a tremendous amount of strength training; it\u2019s visually obvious.\u00a0 Watch wrestlers or bodybuilders go out for a jog.\u00a0 The whole body turns like a refrigerator\u201d \u201cMovement goes older than biology, it\u2019s pre-biological.\u00a0 In-organic physics precedes everything\u201d \u201cThat\u2019s the original rule of movement, things have to accept, or yield this incoming matter, and that\u2019s a good lesson to apply to every other part of that body.\u00a0 That\u2019s the original rule of movement: Things are either moving into something, occupying it and expanding it, or something is compressing something out of it\u201d \u201cWhen I\u2019m externally rotating a femur or a humerus, that\u2019s expansion.\u00a0 When I\u2019m supinating my hand or my foot, that\u2019s expansion\u201d \u201cCompression is internal rotation, pronation, dorsiflexion\u2026 it\u2019s all this compression strategy that we use to squeeze things with\u2026 ultimately you can be too biased towards 上 e side versus the other\u201d \u201cThe deadlift is kind of like a lower body bench press\u201d \u201cI want a rounded ribcage, because a rounded ribcage will roll like a ball through space\u201d \u201cIf you get an athlete who looks like me (short, squat, wide) and you feed them a ton of these exercises that are going to compress anterior to posterior, and expand medial to lateral, you are going to make me run like a 2x4 that\u2019s jerking and halting through space\u201d \u201cIf I get an athlete\u2019s whose spine is shaped like a paper towel roll (expanded A to P) by compressing them anterior to posterior, I might be giving them a lot of benefit\u201d \u201cDeadlift to me is sitting the pelvis backwards in space, posterior displacement of the pelvis to the greatest degree I possibly can (that\u2019s a hinge) and vertical displacement of the pelvis to the greatest degree I possibly can (that\u2019s a squat)\u201d Where you will displace in a yielding manner is going to be based 上 which tissue is in an eccentric orientation\u2026 the 上 ly way I am going to be able to hinge and sit back, is if I allow the posterior pelvic floor to reach an eccentric orientation.\u00a0 The 上 ly way I am going to be able to squat is if I allow the anterior pelvic floor to be in an eccentric orientation\u201d \u201cIf I want to purely hinge, and not squat down at the same time, I need to allow an eccentric orientation of the posterior pelvic floor to yield in that direction and I need a concentric orientation of the anterior pelvic floor to block movement going in that direction\u201d \u201cIf I want to squat straight up and down, and I don\u2019t want my hips to sit back, I need to reach a concentric orientation of the posterior pelvic floor and an anterior orientation of the anterior pelvic floor\u201d \u201cWhat is happening at the ankle is also happening at the pelvic floor, in a lot of ways\u201d \u201cIn many ways, during these athletic movements for elasticity, my muscular system needs to be this re-enforced roll cage so everything else crumples\u201d \u201c100% (the knees in prevents the pelvis from descending\/expanding in squatting)\u201d \u201cInternal rotation and adduction are compressive strategies, and you could very well say that what is happening at the femur is happening at the pelvic floor\u201d \u201cA wide obtuse infra-sternal angle is someone who is biased towards compression systematically, and a narrow infra-sternal angle is someone who is biased towards expansion\u201d \u201c(Intervention) could be not letting the AP compressed person do planks\u201d About 帕特·戴维森 帕特·戴维森, Ph. D., is an independent trainer, consultant, author, and lecturer in NYC.\u00a0Pat\u00a0is the former Director of Training Methodology and Continuing Education for Peak Performance, and former Professor of Exercise Science at Springfield College and Brooklyn College. Author of MASS and MASS2 and developer of the \u201cRethinking the Big Patterns\u201d lecture series and upcoming book 上 the same topic.