• 325: David Grey on Lower-Leg Dynamics, “Fatigue Contrasts”, and Rethinking the Term “Corrective Exercise”

  • Sep 22 2022
  • Length: 1 hr and 19 mins
  • Podcast
325: David Grey on Lower-Leg Dynamics, “Fatigue Contrasts”, and Rethinking the Term “Corrective Exercise” By cover art

325: David Grey on Lower-Leg Dynamics, “Fatigue Contrasts”, and Rethinking the Term “Corrective Exercise”

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  • Today’s episode features biomechanics specialist, David Grey. David is the founder of David Grey Rehab, where he works with clients from all walks of life. David’s specialty is assessing his clients gait cycle in depth to develop a plan to help restore the movement or movements they struggle to perform. David has learned under a number of great mentors in the world of human movement, athletic development, gymnastics, Chinese martial arts, and biomechanics, and is an expansive thinker, blending many elements of human movement together in a down to earth way we can all resonate with. Humans absolutely love to categorize things, and put things in boxes. For those in their initial learning stages, this can really be helpful to the learning process, but at some point, we need to see the grey, or continuum-like nature of things, and how training interacts on its different levels. When we put things in the box of simply being a “corrective” exercise, for example, it loses touch with many of the helpful principles of training and overload that come in more “standard” training exercises. When we can see things from an expansive viewpoint, we can start to gather the wisdom regarding how different pieces of training work together. On today’s show David, puts many things together in regards to good functioning of the kinetic chain for not only knee health, but also better movement. We talk about the muscles of the lower leg, where he stands (and how he has changed) on the level of more “bodybuilding” oriented training methods, keeping things simple in exercise progression (and how putting “corrective exercise” in a box is a bad idea), sensory awareness and fatigue contrasts, and finally, a ridiculously good summary on how David approaches knee rehab and health from a multi-factorial perspective. Today’s episode is brought to you by SimpliFaster, Lost Empire Herbs, and the Elastic Essentials online course. For 15% off your Lost Empire Herbs order, head to lostempireherbs.com/justfly. To try Pine Pollen for FREE (just pay for shipping), head to: justflypinepollen.com Find out more about the the online course, Elastic Essentials, by heading to justflysports.thinkific.com View more podcast episodes at the podcast homepage. Timestamps and Main Points: 3:48 – David’s experience in his United States tour 11:56 – Discussing the muscles of the lower leg, and their importance in movement 21:16 – Simplifying some exercise methods that improve hamstring calf interaction 25:30 – Where muscles sit on the “joints act, muscles react” end of the spectrum in the sense of simply training a muscle to alleviate joint pain or optimize the kinetic chain 36:10 – How to keep things “simple” in a rehab and “corrective exercise” space, and the “sensory to intensity” scale 41:55 – David’s use of “fatigue contrasts” in training and working with longer-ground contact plyometrics 57:27 – David’s current multi-lateral keys to knee training and rehab as he sees it and summarizes it “With movement, you can talk about it all you want, but they need a chance to experience it and feel it” “Even with slower running, the soleus has a lot of load going through it” “If you think going for a jog is easy, it’s easy for a lot of muscles, but it’s not easy on the soleus” “The gastroc has a lot of pre-activation before the foot hits the floor, the soleus has very little. But when the foot hits the floor, the gastroc cools down and the soleus goes through the roof” “A muscle like the soleus and glute max takes time to produce force, because of the shape of the muscle, but they are way stronger… there are other muscles that can contract quicker, but they are not as strong” “Those types of (roller bridge) exercises open you up to a lot of sensation” “Before full body strength work, that’s where we start to isolate a lot of muscles (for those who have inhibited muscles)”
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