Podcast 114: Pooping your pants

This podcast is big on the neurology of  motor control and movement, plus more on glutes and quads, runners diarrhea and lots of other good stuff.  Join us today !

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* Podcast Links: 

http://traffic.libsyn.com/thegaitguys/pod_114f.mp3

http://thegaitguys.libsyn.com/poop
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Show Notes:
Motor control and the immune system.
http://www.thegaitguys.com/thedailyblog/2016/9/12/motor-control-and-the-immune-system

The Exercise Drug is on its way.
http://qz.com/783958/scientists-have-created-a-drug-that-replicates-the-health-benefits-of-exercise/

http://www.cell.com/cell-reports/pdf/S2211-1247(16)31051-8.pdf
 
Glutes and Achilles.
http://www.thegaitguys.com/thedailyblog/2016/9/28/david-and-goliath-the-calf-and-the-glute

https://www.ncbi.nlm.nih.gov/pubmed/24121244

More glutes and quads
 http://www.thegaitguys.com/thedailyblog/2016/10/5/who-rules-the-glutes-or-the-quads-well-it-is-complicated

Runners Diarrhea. What's up with that ?
Am Fam Physician. 1993 Sep 15;48(4):623-7.
Runner's diarrhea and other intestinal problems of athletes. Butcher JD1.

gut and zonulin full text link     https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4589170/

2012 article here: http://www.karger.com/Article/Abstract/342169

Are you a control freak?

While working with a post surgical ACL patient that has +2 laxity and  graft pain, I was reminded of something Dr. Allen and I were talking about while discussing this case. 

One of the primary goals post ACL is stated as improving range of motion, particularly getting to full extension. If you look at the mechanics of the anterior cruciate ligament, you'll see that placing the knee in full extension places this ligament under stretch. We often will try to increase range of motion by hyper extending the knee, or using it as a fulcrum, which can cause undue stretch to this ligament. This means the burden of oweness is on the musculature surrounding the joint to provide stability, similar to what we are seeing in my patient.

I asked him to perform a one legged stand keeping his knee over his second metatarsal and just hold it. I then had him perform a mini squat, but rather than a traditional knee forward squad I had him do a potty squat (tibia remains vertical, while flexion occurs at the knee by moving the femur and glutes backward). Note that his foot is in a tripod position and his toes are up. (see video here)  He was able to maintain good control of the knee for about the first 10° of flexion and then his motion started to degrade. Our goal will be to keep him in a range of motion where he has good neuromotor (find the first 10° of motion) and expand upon that. We remember from our principles of exercise that isotonic exercises (like a potty squat) have a physiological overflow of 15° on each side of the point of application. If I can get him to flex to 10° and be in control, I'm actually getting effects up to 25° flexion.

Simple? Yes. Important? Incredibly! If you can't control the range of motion that you have, why should you have more? Remember in your rehab procedures, keep it in a safe range.

Motor control and the immune system

Wow, interesting. Definitely podcast material. If you have been following the literature, recently the immune system and brain function and the gut have been dramatically linked in ways we never knew existed. Now this !

" Princeton University researchers have found that a family of proteins with important roles in the immune system may be responsible for fine-tuning a person’s motor control as they grow, and for their gradual loss of muscle function as they age. The research potentially reveals a biological cause of weakness and instability in older people, as well as a possible future treatment that would target the proteins specifically."

Immune System Proteins Responsible for Fine Tuning and Reducing Motor Control

NEUROSCIENCE NEWSAPRIL 12, 2016

http://neurosciencenews.com/mghi-motor-control-genetics-4035/

Podcast 94: The Shoe & Motor Control Podcast

Shoes, Minimalism, Maximalism, Motor fatigue, Brain stuff and more !

A. Link to our server:
http://traffic.libsyn.com/thegaitguys/pod_94final.mp3

Direct Download:  http://thegaitguys.libsyn.com/podcast-94

-Other Gait Guys stuff
B. iTunes link:
https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138
C. Gait Guys online /download store (National Shoe Fit Certification & more !)
http://store.payloadz.com/results/results.aspx?m=80204
D. other web based Gait Guys lectures:
Monthly lectures at : www.onlinece.com type in Dr. Waerlop or Dr. Allen, ”Biomechanics”

-Our Book: Pedographs and Gait Analysis and Clinical Case Studies
Electronic copies available here:

-Amazon/Kindle:
http://www.amazon.com/Pedographs-Gait-Analysis-Clinical-Studies-ebook/dp/B00AC18M3E

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http://www.barnesandnoble.com/w/pedographs-and-gait-analysis-ivo-waerlop-and-shawn-allen/1112754833?ean=9781466953895

https://itunes.apple.com/us/book/pedographs-and-gait-analysis/id554516085?mt=11

-Hardcopy available from our publisher:
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Show notes:

movement and brain function; based on your piece: http://www.vancouversun.com/touch/story.html?id=11237102\

shoe fit:
http://running.competitor.com/2015/07/shoes-and-gear/sole-man-the-pros-and-cons-of-buying-cheap-running-shoes_129297

http://www.runresearchjunkie.com/relevant-gems-from-the-2015-footwear-biomechanics-symposium/

Clin Biomech (Bristol, Avon). 2006 Dec;21(10):1090-7. Epub 2006 Sep 1.

The effect of lower extremity fatigue on shock attenuation during single-leg landing.

Coventry E1, O'Connor KM, Hart BA, Earl JE, Ebersole KT.

Dr. Ted Carrick podcast

http://thewellnesscouch.com/bc/bc-07-professor-frederick-ted-carrick-on-the-past-of-functional-neurology

https://itunes.apple.com/au/podcast/backchat/id972497993?mt=2

movement patterns talk: http://www.anatomy-physiotherapy.com/28-systems/musculoskeletal/lower-extremity/knee/1191-altered-movement-patterns-in-individuals-with-acl-rupture

http://lermagazine.com/issues/june/balance-data-suggest-somatosensory-benefit-of-minimalist-footwear-design
Wilson SJ, Chander H, Morris CE, et al. Alternative footwear’s influence on static balance following a one-mile walk. Med Sci Sports Exerc 2015;46(5 Suppl);S562.

http://lermagazine.com/issues/june/running-shoe-reveal-study-links-max-cushioning-higher-load

movement patterns talk: http://www.anatomy-physiotherapy.com/28-systems/musculoskeletal/lower-extremity/knee/1191-altered-movement-patterns-in-individuals-with-acl-rupture

If you plan to live that long, you better start thinking about preservation:
http://www.cnbc.com/id/102730128  

Music piece/ Bass players:
http://mentalfloss.com/article/64955/science-proves-supreme-power-bassists

This is a slide from a recent teleseminar we delivered on www.onlineCE.com.  You can take any of our dozens of courses/lectures there for a nominal fee.

 

This was an interesting study.  Here the authors seemed to discover that habitually driven sensory-motor patterns (as compared to optimally controlled patterns) are quite resistant to changes in biomechanics. In the study, when the tested model was compromised, the subject merely increased the recruitment of all of the surrounding muscles to stabilize and direct movement. Basically, there was no great and calculated logical strategy, it was an all out, habitually automated response … . a “just get the job done right now kind of response”.  Perhaps a “living in the moment” response?  

We have often said that the paramount task via the central nervous system is an orchestration at the the joint, it must be stabilized and movement controlled at the moment of the joint challenge. But, the problem lies in that the consequences of a suboptimal strategy cannot be determined in the moment, they come in time. And this is likely what builds these aberrant compensation patterns, they happen slowly, subtly over time little by little. 

Just as in life, the cost of our decisions are not often immediately realized.

Shawn and Ivo

The gait guys

Neurocognitive Control in Movement Perception and Control

You have read our blog posts on how much we respect and admire those that engage in complex motor tasks like gymnastics, martial arts, parqour, dance and others.  The more complex the task the greater the rewards on several levels.

We found yet another article supporting multiple levels of sensory-motor advancement, in this article’s case, dance however it applies broadly across all complex motor tasks.  We have also included another video with dub dancer Marquese Scott with this blog post. You may recall our prior writing with him, link here where we talked briefly about “foot edge work”. The above video is another demo of Marquese doing what he does best, making complex motor tasks look simple.

Neurocognitive control in dance perception and performance.

Acta Psychol (Amst). 2012 Feb;139(2):300-8. Epub 2012 Jan 9.

Bläsing B, Calvo-Merino B, Cross ES, Jola C, Honisch J, Stevens CJ.

Department of Sport Science, Bielefeld University, Germany. bettina.blaesing@uni-bielefeld.de

Abstract: Dance is a rich source of material for researchers interested in the integration of movement and cognition. The multiple aspects of embodied cognition involved in performing and perceiving dance have inspired scientists to use dance as a means for studying motor control, expertise, and action-perception links. The aim of this review is to present basic research on cognitive and neural processes implicated in the execution, expression, and observation of dance, and to bring into relief contemporary issues and open research questions.

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What The Gait Guys have to say:

The abstract review above addresses six issues they discovered and investigated in dancers:

1) dancers’ exemplary motor control, in terms of postural control, equilibrium maintenance, and stabilization;

2) how dancers’ timing and on-line synchronization are influenced by attention demands and motor experience;

3) the critical roles played by sequence learning and memory;

4) how dancers make strategic use of visual and motor imagery;

5) the insights into the neural coupling between action and perception yielded through exploration of the brain architecture mediating dance observation; and

6) a neuroesthetics perspective that sheds new light on the way audiences perceive and evaluate dance expression.

As you have read from some of our previous blog articles, we have some experience in dance. We do this to make sure we are always pressing the edge of human sensorymotor development and learning.  Dance has been one of the most complex body movement endeavors we have undertaken, more difficult than many of the complex movements in various sports.  This is why we never have a problem recommending dance, gymnastics and pilates to our young patient’s parents who want their children to excel in any given sport.  Fast, precise, assured and efficient foot work will take one far in athletics.  It is why in basketball they talk so much about the importance of the first step off a dribble when confronting an opponent. The first step, when fast, precise, assured and efficient, will leave one’s opponent stunned and motionless as their savvy opponent effortlessly passes them by. Nothing teaches these foot skills better than dance in our experience. Just as Marquese displays above, mastering complex footwork leads to advanced body movement possibilities.  And possibilities in sport are what separate the great from the good.  The 6 points discussed above namely exemplary motor control, in terms of postural control, equilibrium maintenance, and stabilization, timing, on-line synchronization, sequencing of learning and memory, the advantages of strategic use of visual and motor imagery, the insights into the neural coupling between action and perception are all major advantages to the athlete who can put them into play at a higher level.  And the more complex cross training of tasks that occurs, the greater likelihood that these issues are what will allow the cream to rise to the top in sport.

The Gait Guys