Welcome to rewind Friday Folks.

Think about all those folks in the Northeast who have been shoveling (OK, the folks in Colorado as well) and their feet being rubber boots!

Here’s an oldie, but a goodie.

Here’s one paper we though had merit (sure, go to Pub Med and search foot odor. There were 119 entries). We think we may try this in the office…

The Gait Guys: Yes, smelly feet are something we have to deal with at the office on a daily basis. One of the pitfalls of being a Foot Geek : )
Make sure to check back later for more on malodorous extremities…                        
J Int Soc Sports Nutr. 2007 Jul 13;4:3.

A novel aromatic oil compound inhibits microbial overgrowth on feet: a case study.


West 1140 Glass Avenue Spokane, Washington, 99205, USA. drbill@omnicast.net.




Athlete’s Foot (Tinea pedis) is a form of ringworm associated with highly contagious yeast-fungi colonies, although they look like bacteria. Foot bacteria overgrowth produces a harmless pungent odor, however, uncontrolled proliferation of yeast-fungi produces small vesicles, fissures, scaling, and maceration with eroded areas between the toes and the plantar surface of the foot, resulting in intense itching, blisters, and cracking. Painful microbial foot infection may prevent athletic participation. Keeping the feet clean and dry with the toenails trimmed reduces the incidence of skin disease of the feet. Wearing sandals in locker and shower rooms prevents intimate contact with the infecting organisms and alleviates most foot-sensitive infections. Enclosing feet in socks and shoes generates a moisture-rich environment that stimulates overgrowth of pungent both aerobic bacteria and infectious yeast-fungi. Suppression of microbial growth may be accomplished by exposing the feet to air to enhance evaporation to reduce moistures’ growth-stimulating effect and is often neglected. There is an association between yeast-fungi overgrowths and disabling foot infections. Potent agents virtually exterminate some microbial growth, but the inevitable presence of infection under the nails predicts future infection. Topical antibiotics present a potent approach with the ideal agent being one that removes moisture producing antibacterial-antifungal activity. Severe infection may require costly prescription drugs, salves, and repeated treatment.


A 63-y female volunteered to enclose feet in shoes and socks for 48 hours. Aerobic bacteria and yeast-fungi counts were determined by swab sample incubation technique (1) after 48-hours feet enclosure, (2) after washing feet, and (3) after 8-hours socks-shoes exposure to an aromatic oil powder-compound consisting of arrowroot, baking soda, basil oil, tea tree oil, sage oil, and clove oil.


Application of this novel compound to the external surfaces of feet completely inhibited both aerobic bacteria and yeast-fungi-mold proliferation for 8-hours in spite of being in an enclosed environment compatible to microbial proliferation. Whether topical application of this compound prevents microbial infections in larger populations is not known. This calls for more research collected from subjects exposed to elements that may increase the risk of microbial-induced foot diseases.

The Gait Guys. Bringing you the good, the bad and the smelly….

Another IFGEC Certification granted:

Here’s what Mark Small has to say

“The National Shoe Fit Program is beneficial to many fields/disciplines including, but not limited to, coaches, personal trainers, athletic trainers, physical therapists, podiatrists, and chiropractors (I would say MD’s, but it doesn’t come in a pill), as well as those who sell shoes.  The program offers tools to help us understand individual differences and their effects on gait and performance.  Some of the material includes:
    •    Foot anatomy
    •    Anatomical Landmarks
    •    Foot types
    •    Pathologies
    •    Basic biomechanics
    •    Shoe fit functional testing
    ⁃    Static and dynamic tests to assist fitting
    •    Finally shoe selection
    ⁃    Picking the best shoe for your client/athlete/patient

Some of these topics may be a good review for some of the advanced disciplines listed above. What the program is able to do, even for them, is to link everything together in a methodical, step by step, detailed approach, that applies what we have learned into something predictable and usable. We are often looking for ways to increase performance, decrease pain and get people to move better.  I, for one, believe that much of bad movement, pain and dysfunction have to do with inappropriate footwear, this course is a starting place to help correct that problem.  I am looking forward to Level 2 & 3 certification programs, but more importantly, I am looking forward to applying what I am learning with the people I serve.  I’m not a Gait Guy… more like a gleam in the gait daddy’s eye, but I’m working on it.”

Congratulations, Mark!

The Gait Guys

Thanks for the kudos Coach Smith !

for anyone interested… . . 

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


2. other web based Gait Guys lectures:

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

” I had explosive diarrhea in the middle of a good long run.”

We have always wanted to start a blog post with something dirty like that, but it never seemed like the right thing to do. So, we figured we would save it for on or around the day of our 1000th blog post. We started The Gait Guys blog in 2011 with our first blog post and just a few days ago the trumpets sounded at the 1000th post. How did this happen ? Well, it happened little by little, 3-5 post a week, month after month. It happened just as the gentleman described in the video above on how to make a dry wall, stone after stone.  Our writing has managed to reach into 74 countries with the additional help of our podcasts, teleseminars and social media.  Thus, we wanted to just voice a little thanks to you all for following us, week after week, month after month.  So far this has been a pretty great journey for us and we are happy you have come along for the ride. 

Now back to sphincters and running. 

” I had explosive diarrhea in the middle of a good long run.”

Think it can’t happen to you ? Here is a true medical literature case study. “A 20-year-old female running the Marine Corps Marathon developed diarrhea at mile 12. After finishing the race she noted that she was covered in bloody stool. A local emergency department suspected ischemic colitis.” This was straight from the Grames study found below. 

Maintenance of the basal tone in the internal anal sphincter is critical for rectoanal continence. Effective evacuation requires a fully functional rectoanal inhibitory reflex-mediated relaxation of the internal anal sphincter via inhibitory neurotransmission.

Ok, What !!!!????

Basically, all that means is that the tone of the anus is pretty complicated and when it works right, we don’t think about it much, and when it shows us signs of things hitting the fan, it prompts an immediate hierarchy of our attention.  However, diarrhea is so much more than what is violently erupting from the opening at the other end of our alimentary tract.

Lower GI complaints such as urgency and diarrhea are not all that uncommon in runners.  Sometimes it is pre-race jitters/nerves, sometimes is too many donuts and coffee before the big sunday team run, sometimes it is electrolyte imbalances or too much beer or Wild Turkey the night before, sometimes it’s aberrant autonomic nervous system stimulation, and in the initial case above sometimes it is ischemia (impaired blood perfusion to the colon).

Possible mechanisms of ischemia in distance runners and others participating in intense exercise may include a combination of splanchnic vasoconstriction, dehydration, and hyperthermia, combined with the mechanical jostling of organs via intense activity. Most of the unfortunate presenting with marathon-running-induced ischemic colitis respond favorably to conservative treatment, but awareness is the first step. However, as in the Cohen et al case referenced below, sometimes the unlucky collapse at the finish line and have other results …  whereafter “computed tomography scanning revealed ischemic colitis of the cecum and ascending colon, which progressed to the development of clinical peritonism after 48 hours. This patient subsequently underwent a laparotomy and right hemicolectomy, with ileostomy formation, on the third day after admission. Operative and histologic findings confirmed ischemic colitis of the cecum and proximal colon.”  

So, there is some anxiety-inducing stuff to think about right before your long run this week ! But lets be realistic. Be smart, watch your diet with a good food diary, think hard about your fluid levels and what those fluids are, be smart about pushing hard during high temperature days, know your usual stool habits, and most of all do not ignore the subtle or obvious signs that things could be going wrong in a race or in training. Unexpected bowel problems in a race may not be only a mere embarrassment, they could be telling you something is seriously wrong. 

In closing, thanks for following our writings for the past 3.5 years, writings amounting to 1000 articles. It has been a fun journey and we have learned right along side of you.  In relation to the video above, our body of work is clearly no novel, but our journey in itself is a story of sorts. A story that has been piecing together all the little nuances of the human frame and its biomechanics, bit by bit. 

(Oh, and for those who feel we should apologize for the video not being about, well, erupting diarrhea in a runner, well, we wanted to make today’s post more about the writing process. If you want THAT video, that is what youtube might be for. Just don’t too much of your day looking for it, try writing a book instead.)

Shawn and Ivo,

Two Gait Guys trying to avoid what sometimes hits the fan.


1) Am Fam Physician. 1993 Sep 15;48(4):623-7. Runner’s diarrhea and other intestingal problems of athletes. Butcher JD.

2) Am J Emerg Med. 2009 Feb;27(2):255.e5-7. Marathon-induced ishemic colitis: Why running is not always good for you.  Cohen DC1Winstanley AEngledow AWindsor ACSkipworth JR.

3) Case Rep Gastrointest Med. 2012;2012:356895. Ischemic Colitis in an endurance runner.  Grames C1Berry-Cabán CS.

Concepts in Pelvic Stabilization. Do you know what you know?

We made this video several years ago. It is excerpted from our DVD series on core stabilization available here.

It reviews some concepts of the abdominal core and reviews problems with typical sit up and crunch exercises.

The take home message is one of technique and application. The details and little things are often the most important things. Especially when it comes to exercise and rehabilitation.

The Gait Guys

Stopped by yesterday to see my friends and fellow running/shoe geeks at New Balance Chicago, Oakbrook Terrace store. My good friend and shoe genius Mike and Jeff blessed me with a gift. A pair of the New BAlance Fresh Foam. We will definitely be talking this one up on podcast 56 ! 4mm drop, and just over 20mm of stack height, no siping, this one could be a smooth ride ! These guys are so nice, what a store ! New Balance #newbalance#thegaitguys #freshfoam #4mmramp

 (4 photos)

Podcast 55: Cold Joints, Gluten Brain & Toilets

-The Neurophysiology of your Joint Pain and Problems

A. Link to our server:

Direct Download: http://traffic.libsyn.com/thegaitguys/pod_55final.mp3

Permalink: http://thegaitguys.libsyn.com/podcast-55-cold-joints-gluten-brain-toilets

B. iTunes link:


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


D. other web based Gait Guys lectures:

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


* Today’s show notes:

3 neuroscience pieces this week:


‘Gluten Brain’: Wheat Cuts Off Blood Flow To Frontal Cortex 


Influence of midsole hardness of standard cushioned shoes on running-related injury risk

Case From a blog reader

I’m a swedish elite cross-country skier and newly graduated physio and I find your podcasts very interesting and informative! I have a question about something I’ve never heard you talk about, and which has been a problem for me for the last year.
It’s about the IP-joint of the big toe. I’ve had discomfort/pain in the joint for the last year, mostly after my workouts. It’s a bit swollen and there is crepitus to some degree(especially when I manually flex the toe while compressing it and at the same time have a pressure downwards/ventrally of the distal phalanx. I think it may be coming from a trauma I had 4-5 years ago when I stubbed my big toe really hard in a rock in an orienteering competition, which caused me to rest from running for a week or two.
So, my question to you is if you have any suggestion for me or others in my situation? Treatment? Which types of shoes to use? How would a future joint-fusion affect my running?
I’m only 23 years old and I’m really worried that this ache/discomfort will just get worse and worse.. I’ve asked a lot of great physios here in Sweden, but most of them don’t know much about what to do.
I’d be really grateful if you could take the time to give this a thought and share it.
Another reader case:

Good morning. I am a former collegiate runner, I competed at Eastern Michigan University and Grand Valley State University, my father is a Chiropractor in northern Michigan. While in school I was recalled to active duty in the reserves after 9/11 and was unable to finish my eligibility. I am now 32, living in North Carolina, and trying to make a comeback to running and competing in Triathlons. At 6’2” and 170lbs. during college  I was competitive at the collegiate level  but always a step behind the true elites in the distance races in college, probably just because of my size, etc. competing against guys carrying 30 less lbs.

I train with a team called Without Limits  (iamwithoutlimits.com ) in Wilmington NC. My coach had mentioned that I had a really long loping stride which felt normal to me, but I cannot remember if I ran this way in college or not. When I finally counted, I had a cadence of 140 steps per minute rather then the optimal 180…

Long story short, I got really out of shape, now getting into pretty good form again, but I am having problems with the IT band and pain in the knee on the right leg. I never ever had this in college training at very high levels (90-100 mile weeks in the off and early parts of each season) …so now I have the bike component that I am working on, but being a larger distance runner I am trying to fine tune my gait/stride and see if I can improve my running that way and also figure out what is going on with this IT band issue as I am only running 30-40 miles/week now but on the bike and in the pool a lot. I am back down to 175 and pretty lean but carrying a little extra muscle from biking and swimming.

Would you be interested, if I could send you several high quality videos from different angles, in taking a look at my gait (or even riding the bike on the trainer) and see if you notice anything ? I have been working on improving my cadence since the IT band issues began, and found your videos online while doing research.  I understand this would be better done on a treadmill or in the parking lot at your office where you could watch up close, but if you are interested, please let me know. I look forward to hearing from you.




The sedentary life affects your neurons !



A 3rd case this week, on Dystonia

Do you guys have any recommendations for analysis and treatment of acquired focal and gait dystonia?
It started as a splinting mechanism with a very loose right si and some L5 radiculopathy over 5 years ago.  The dystonia would come and go then eventually stuck all the time.
All the dystonia is on the right side and I don’t have any systemic neurological disease.
Forward walking, stair climbing, running (although barefoot running in grass and in particular undulating surfaces is ok in small amounts, asphalt or treadmill
brings on dystonia within seconds) are all a problem. Can cycle, run in water for 40 minutes or so no problem, so I think Si may still be hypermobile.  Walking backwards no problem.
Dystonia presents as stiff right leg with knee hyperextension, right eccentric weak, right glute medius weak, sticky posterior weight shift, but full and
painless movement through complete range of hip and knee.  I do have some focal dystonia as well mostly knee extension with hip flexion and foot supination and eversion with hip and knee flexed.

There must be someone who deals with this somewhat locally to me, Virginia Beach, VA.  Hoping you all may have some contacts on the east coast.

Get This: A Smart Toilet That Aims to Correct Poor Posture, and Even Detect Pregnancy and Disease | Entrepreneur.com