New research on Non-motorized treadmills.

Facts:

•Non-motorised treadmill locomotion creates large reductions in tibial acceleration.
•Non-motorised treadmill locomotion increases lower limb muscular activation.
•Non-motorised treadmill locomotion decreases cycle time/increases step frequency.

Keep these things in mind when you are doing a treadmill gait analysis. We have discussed over and over again of the severe and misleading information gleaned from gait analysis, that it shows strategies around problems, often not the problem at hand. But, this is yet one more factor to keep in mind when you are doing such studies, that changing the surface and how and why any given work is being performed on a given surface/device, that the information can be tainted if you do not know exactly what you are dealing with.   

Few studies are perfect, look at all of the parameters they likely should, and understand the complexity of the model they examine in their entirety. None the less, there is information to glean from most studies that help to debate, refute or clarify working concepts presently proven or unproven. This study provides some conclusions as well, that should be take in, digested and then determined where, when and if appropriate for a client.

Tibial impacts and muscle activation during walking, jogging and running when performed overground, and on motorised and non-motorised treadmills

Montgomery, Dobson, Smith & Ditroilo

http://www.gaitposture.com/article/S0966-6362(16)30116-3/abstract?platform=hootsuite

Gait changes on a treadmill

Something to ponder on those days when getting outside it just impossible because of weather.
Athletes might respond to fatigue differently when running on a treadmill compared with overground conditions, where pace is typically more variable.
“Before halfway, step length increased and cadence decreased, whereas during the latter stages, there were significant decreases in impulse and maximum force. Contact time decreased and flight time increased continually, but otherwise most gait variables did not change. The changes in contact and flight times suggested that athletes altered their gait so that more time was spent airborne to allow the treadmill to pass under them. In general, however, the runners maintained their techniques throughout the run. ”

http://www.ncbi.nlm.nih.gov/m/pubmed/23860291/

Podcast 56: Crawling, Neurodevel. & Foot Strike

A. Link to our server:

Direct Download: 

http://traffic.libsyn.com/thegaitguys/pod_57_final.mp3

Permalink: http://thegaitguys.libsyn.com/podcast-56-crawling-neurodevel-foot-strike

B. iTunes link:

https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138

C. Gait Guys online /download store (National Shoe Fit Certification and more !) :

http://store.payloadz.com/results/results.aspx?m=80204

D. other web based Gait Guys lectures:

www.onlinece.com   type in Dr. Waerlop or Dr. Allen,  ”Biomechanics”

________________________________________

* Today’s show notes:

Neuroscience

Human quadrupedalism is not an epiphenomenon caused by neurodevelopmental malformation and ataxia.  

” a re-emergence of the ancestral diagonal QL, and (3) it may spontaneously emerge in humans with entirely normal brains, by taking advantage of neural networks such as central pattern generators that have been preserved for about 400 million years.”

References:

Front Neurol. 2012 Oct 25;3:154. doi: 10.3389/fneur.2012.00154. eCollection 2012. Karaca S1, Tan MTan U. Human quadrupedalism is not an epiphenomenon caused by neurodevelopmental malformation and ataxia.
2)  selectively removing torsions ? bunions ?  
FDA Panel Mulls Technique That Creates Babies Using DNA of 3 People
http://foxnewsinsider.com/2014/02/25/fda-panel-mulls-technique-creates-babies-using-dna-3-people
3) A Crazy Oculus Rift Hack Lets Men and Women Swap Bodies

http://www.wired.com/design/2014/02/crazy-oculus-rift-experiment-lets-men-women-swap-bodies/

“Minimum effective dose: Why less is more” – via Farnam Street blog. True for manual therapy, for sure. Lighten up, hack nervous system instead of trying to force structure to comply.http://www.farnamstreetblog.com/2014/02/the-minimum-effective-dose-why-less-is-more/
6) Unpowered Treadmills

Podcast 53: Debunking Treadmills & Recovery Strategies

A. Link to our server:

http://thegaitguys.libsyn.com/podcast-53-debunking-treadmills-recovery-strategies

B. iTunes link:

https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138

C. Gait Guys online /download store (National Shoe Fit Certification and more !) :

http://store.payloadz.com/results/results.aspx?m=80204

D. other web based Gait Guys lectures:

www.onlinece.com   type in Dr. Waerlop or Dr. Allen,  ”Biomechanics”

________________________________________

* Today’s show notes:

By this time next year, you could be 3D printing custom comfortable inserts for your shoes
http://gigaom.com/2014/01/26/by-this-time-next-year-you-could-be-3d-printing-custom-comfortable-inserts-for-your-shoes/
_______________

LeBron James, Kevin Durant Help Spearhead NBA Popularity of Legs Recovery System
http://bleacherreport.com/articles/1932257-lebron-james-kevin-durant-help-spearhead-nba-popularity-of-legs-recovery-system#articles/1932257-lebron-james-kevin-durant-help-spearhead-nba-popularity-of-legs-recovery-system

_________________
Mechanism of orthotic therapy for the painful cavus foot deformity
http://www.jfootankleres.com/content/7/1/2/abstract
___________________

The influence of incline walking on joint mechanics

__________________
_____________
Ice baths:
____________

8:38am Jan 21

Hi guys,

I’m hoping you can help.

I have a severely arthritic 2 MTPJ on my left foot.

It seems to trigger extreme hip flexor tightness which has twisted my whole body, right up to my neck and jaw.

I can’t seem to get any definitive answers as to how to turn off this protective hip flexor tightness. I’m concerned if it goes on much longer I’m going to develop bone spurs throughout my body. This would destroy my life.

Is there any surgery you recommend?

Or any type of Rocker soled shoe? I’ve tried MBT’s but I think the forefoot is stiff enough and my Hipflexor hasn’t calmed down properly.

Thank you so much if you decide to answer this

Richard
____________
Blog reader: moham17
How does subtalar supination/pronation affect plane deviations farther up the chain, specifically at the pelvis? I was going over some notes and found something saying that increased pronation leads to increased frontal plane motion at the pelvis during gait, and increased sup leads to increased transverse plane motion. However, in this video I was watching, the clinician states that increased sup will lead to increased frontal plane motion. Is this not a contradiction? Can both be true? Thanks
______________
Fighting falls with feedback: Virtual reality training improves balance | Lower Extremity Review Magazine
http://lowerextremityreview.com/issues/january/fighting-falls-with-feedbac-virtual-reality-training-improves-balance
_____________

Brooks Transcend and Altra Olympus: Max Cushioning In a Lightweight Package Appears To Be The New Trend in Running Footwear

Podcast 53: Debunking Treadmills & Recovery Strategies

A. Link to our server:

http://thegaitguys.libsyn.com/podcast-53-debunking-treadmills-recovery-strategies

B. iTunes link:

https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138

C. Gait Guys online /download store (National Shoe Fit Certification and more !) :

http://store.payloadz.com/results/results.aspx?m=80204

D. other web based Gait Guys lectures:

www.onlinece.com   type in Dr. Waerlop or Dr. Allen,  ”Biomechanics”

________________________________________

* Today’s show notes:

By this time next year, you could be 3D printing custom comfortable inserts for your shoes
http://gigaom.com/2014/01/26/by-this-time-next-year-you-could-be-3d-printing-custom-comfortable-inserts-for-your-shoes/
_______________

LeBron James, Kevin Durant Help Spearhead NBA Popularity of Legs Recovery System
http://bleacherreport.com/articles/1932257-lebron-james-kevin-durant-help-spearhead-nba-popularity-of-legs-recovery-system#articles/1932257-lebron-james-kevin-durant-help-spearhead-nba-popularity-of-legs-recovery-system

_________________
Mechanism of orthotic therapy for the painful cavus foot deformity
http://www.jfootankleres.com/content/7/1/2/abstract
___________________

The influence of incline walking on joint mechanics

__________________
_____________
Ice baths:
____________

8:38am Jan 21

Hi guys,

I’m hoping you can help.

I have a severely arthritic 2 MTPJ on my left foot.

It seems to trigger extreme hip flexor tightness which has twisted my whole body, right up to my neck and jaw.

I can’t seem to get any definitive answers as to how to turn off this protective hip flexor tightness. I’m concerned if it goes on much longer I’m going to develop bone spurs throughout my body. This would destroy my life.

Is there any surgery you recommend?

Or any type of Rocker soled shoe? I’ve tried MBT’s but I think the forefoot is stiff enough and my Hipflexor hasn’t calmed down properly.

Thank you so much if you decide to answer this

Richard
____________
Blog reader: moham17
How does subtalar supination/pronation affect plane deviations farther up the chain, specifically at the pelvis? I was going over some notes and found something saying that increased pronation leads to increased frontal plane motion at the pelvis during gait, and increased sup leads to increased transverse plane motion. However, in this video I was watching, the clinician states that increased sup will lead to increased frontal plane motion. Is this not a contradiction? Can both be true? Thanks
______________
Fighting falls with feedback: Virtual reality training improves balance | Lower Extremity Review Magazine
http://lowerextremityreview.com/issues/january/fighting-falls-with-feedbac-virtual-reality-training-improves-balance
_____________

Brooks Transcend and Altra Olympus: Max Cushioning In a Lightweight Package Appears To Be The New Trend in Running Footwear

Podcast 51: Bouncy Gait, Stem Cells & Plantar fasciitis,

A. Link to our server:

http://thegaitguys.libsyn.com/podcast-51-bouncy-gait-stem-cells-plantar-fasciitis

B. iTunes link:

https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138

C. Gait Guys online /download store (National Shoe Fit Certification and more !) :

http://store.payloadz.com/results/results.aspx?m=80204

D. other web based Gait Guys lectures:

www.onlinece.com   type in Dr. Waerlop or Dr. Allen,  ”Biomechanics”

________________________________________

* Today’s show notes:

Neuroscience:

1. Stem cells and plantar fasciitis.
2. Study finds axon regeneration after Schwann cell graft to injured spinal cord

http://www.medicalnewstoday.com/releases/270623.php

3.Future Tiny Robots Will Communicate Using Only Molecules

http://www.fastcoexist.com/3020657/futurist-forum/future-tiny-robots-will-communicate-using-only-molecules?partner=rss

Correction:

a. I was listening to pod 49, great job. I am sending a personal message to point out an error regarding body composition. Under water weighing is considered the 2 compartment “Gold Standard” however caliper testing is used more due to cost and ability to be used in the field. Loved the learning stuff I sent some stuff similar to what you were talking about to the school administration but it went no where.
Thanks guys, Mark

b. Mark wrote: “I can see widening base of support to increase stability when one is weak but to widen base of support when one has decreased traction may increase slipping depending on width of stance couldn’t it. If decreased traction is a issue wouldn’t a better statagy”
Blog reader:
Not very infrequently the foot tripod has been discussed. Especially the importance of the medial tripod (MT) has been of great benefit to me. Some kind of a peroneus paralysis was probably the cause of weak MT of the right foot. With a weak anterior muscle group or compartment. But what about the lateral tripod, ie the 5th distal end of the fifth metatarsal. Which muscles are most responsible for the foot stability here and what kind of exercises might be of therapeutic value? Thank you.

Disclaimer
Gait Guys online /download store (National Shoe Fit Certification and more !) :

http://store.payloadz.com/results/results.aspx?m=80204 

Dear Gait Guys,                                

I’ve had a problem for a while where my lower left leg whips across the midline of my body at the start of the swing phase. This happens immediately after my left foot leaves the ground and before my right foot makes contact. My left knee seems to be angled outward, and I think this is due to some sort of external rotation of the hip or femur during the the early part of my swing phase. I attached a picture to illustrate this problem in my gait. I recently came across a blog post you guys wrote (http://thegaitguys.tumblr.com/post/14262793786/gait-problem-the-solitary-externally-rotated) and under the possibilities as to why there isn’t enough internal rotation, the second option describes exactly what happens when I run. So my question is, what can be done to correct this improper gait pattern? Thank you very much for taking the time to read this.
Sincerely,
Matthew
Between a quarter and a third of everything on the web is copied from somewhere else

 

Podcast #18: Treadmills, ‘Shrooms & Santa

If you do not split a gut laughing by the time the band plays there is something wrong with you ! Who says gait stuff isn’t entertaining !
Perhaps our best podcast to date ? You decide.

Permalink URL
http://thegaitguys.libsyn.com/pod-18-treadmills-shrooms-santa

itunes link:

https://itunes.apple.com/us/podcast/the-gait-guys-podcast/id559864138

Topics: Treadmills, neuroreceptors, foot types, hip biomechanixcs, gait cycle

Neuroscience piece link:

http://www.cannabisculture.com/articles/3136.html

1. from Eric on our FB page:

a. Had a 9yr old girl for a shoe fitting recently. She had a forefoot valgus, with a rearfoot that is neutral or slightly varus. Fairly high arch and rigid Midfoot for a child that age as well. usually a child’s foot is super flexible so this makes me wonder if it’s a compensation for a true FF varus. How do I tell if he has an anatomic FF valgus vs a compensated version?

b. I asked Blaise Dubois his opinion on Treadmill vs outdoor running and he mentioned that the literature indicates TM’s aren’t much different than outdoor. He cites (Wank 1998). To me, running feels completely different and I can’t run nearly as efficiently on a TM as outdoor. i know some people are the opposite, which i subscribe to specificity of training.

the question i have is what basis do you use for your opinion on different motor patterns? i agree with you, but the literature seems to disagree. this is a piece from cybex so of course it will be “pro-treadmill”, but they quote several studies that concur with Wank… http://media.cybexintl.com/cybexinstitute/research/Truth_on_Fit_Apr10.pdf

hope i’m not sending too many questions. i figure you can ignore them if you have too many from other listeners.

http://media.cybexintl.com/cybexinstitute/research/Truth_on_Fit_Apr10.pdf
media.cybexintl.com
2. On the Hip Bio Pt 6 you mention ext rot leg to gain leg length.  This one has been racking my brain.  I could see how this could happen if the person supinates the foot at the same time, but is there some other external rotating mechanism occurring in the hip that would cause this lengthening?  Thanks,Ryan

___________

Hi Gait Guys,

I am a chiropractor in South Africa, and find gait, biomechanics and running fascinating…I’m hoping to become a true gait geek one day.Reading your blog has taught me so much, you guys seem to look at gait from every angle and don’t take things at face value.

I would like to find out about your Shoe Fit Certification Program. Can people from outside the USA complete the course? Would I be able to take the exam online? and would it give me any creditation in South Africa

 Hope to hear from you soon.

 Regards, Claire

3. I have been watching your video’s on you tube.  I have a cavus foot in which I have had severe nerve pain, why is the high arch caused by nerve pain?

And would any of your exercises help with my nerve pain

Thanks,Wendy

___________
4. Hi guys,
Found your youtube channel. Very interesting stuff. Have started reading up on the whole gait cycle. Its very interesting.
I have a quick question that I hope that you can help me with:
Are you aware of any correlation of hip impingement (cam/pincer) in terms of having an irregular gait cycle?
I am suffering from both CAM & PINCER impingement in my right hip. Had surgery in January, but they did not shave sufficiently off the bone, so going back to surgery soon.
I am therefore interested in seeing how surgery possible could help me with bettering my walk and strain on my lower back / leg / foot. And also in terms of looking into some theory on how to retrain myself in walking cycles.
The problem is, that this kind of rehab/research is not available here in Denmark. So would appreciate if you are aware of any research on the above, and would be able to point me in the direction of that.
Thank you – and keep those great videos coming. 🙂
Best,
Terje (Denmark)