Northern vs. Southern Hemisphere differences in posture

[KEELEY]

Many years ago I was exposed to the phenomenon of variations in posture/pelvic alignment trends in Northern vs. Southern hemisphere populations. This past weekend I had the pleasure of hosting Peter Lelean, MT, from Australia. Peter spent the weekend teaching me his findings regarding the Migratory Fascia Syndrome and its treatment. Along the way he worked with me on a number of clients. As he checked leg length and pelvic asymmetries, he was continuously surprised that most of my clients had a right long leg and right anterior rotated pelvis. This was just the opposite of what he finds as the norm in Australia.

One theory that I remember hearing was due to the venturi effect (http://keithrogershome.com/Chap5Wind.html for example), where water or wind move in opposite directions in each of the hemispheres. This sounds like a job for Google Scholar!

What ave your experiences been?

 

[great gig in the sky]

Northern vs. Southern Hemisphere differences in posture

It may be b/c they drive on the left in Australia and the rt in the states. You'll have to check how many of these patients are drivers.

 

[cathima]

Northern vs. Southern Hemisphere differences in posture

That is a good thought, though I'm not sure all of the Southern Hemisphere drives on the left.

 

[Mark P]

Northern vs. Southern Hemisphere differences in posture

Well, thought I was being clever but realized that's not a good explanation if the driving apparatus (the brake and gas) pedal aren't operated by the left foot. Which, just b/c the driver is driving on the left side of the road, doesn't mean the pedals are operated by the left foot.

And, then, there's the point you brought up that you have information that it consists of the population of the entire southern hemisphere? So then, there was there a good grouping of subjects that were tested for the left anterior rotation from all countries in the southern hemisphere?

 

[Teresa]

Northern vs. Southern Hemisphere differences in posture

I've spent the last half hour or so on Google Scholar, but have yet to come up with any information. Can anyone out there help?

 

[sofeinurbizness]

Northern vs. Southern Hemisphere differences in posture

Walt wrote, "Many years ago I was exposed to the phenomenon of variations in posture/pelvic alignment trends in Northern vs. Southern hemisphere populations", that statement is fascinating to me, can you share anything further about that?

I'm curious to how it was determined that most patients have the left rotation in the southern hemisphere, is that something you can share here or direct me to?

 

[nefertiti_1018]

Northern vs. Southern Hemisphere differences in posture

I'm figuring it is for the same reason the toilet water turns differently in the bowl.

We've got a client from Argentina. She is here about 4 times a year. She's my husband's client. I'll ask him to take a brief look next time he sees her.

I also have a client from Guatamala. I only see her about twice a year. But, I'll keep this thread in mind and check next time she is in as well.

I've also got two clients I am seeing every two weeks from England. They obviously drive on the "opposite side of the road". I'll look back at my initial notes, from when they moved here.

 

[Pringle]

Northern vs. Southern Hemisphere differences in posture

The water spinning differently around the toilet bowl correlating with the hemisphere you are in is a myth.

http://www.weatherimagery.com/blog/water-spin-down-drain/

http://www.ems.psu.edu/~fraser/Bad/BadCoriolis.html

http://science.howstuffworks.com/science-vs-myth/everyday-myths/rotation-earth-toilet-baseball.htm/printable

 

[starburst71795]

Northern vs. Southern Hemisphere differences in posture

Thank you ma'am. I appreciate you posting this. I found something interesting in the article which may still be of help regarding the thought Walt is processing.

The fact is, the Coriolis force (an apparent force as a result of the Earth’s spin) has virtually nothing to do with which direction water spins as it empties down a drain. Although this force is “real” and does have an affect on other large, long-lived systems that travel great distances (such as hurricanes, high and low pressure systems, and long range artillery shells), water draining from toilets, sinks, and bathtubs are rendered virtually immune from its affects. The Coriolis force is much too weak to have any affect on such small, short-lived rotating bodies of water under normal conditions.

Would our bodies, after many years fall into the long-lived systems? And, I wonder if there is any major pelvic rotation in those who live along the equator (barring general body problems)? Both, very interesting questions.


In case you were searching this Walt, I went ahead and looked up the info on Coriolis and long range artillary. I'm not sure this will be useful, since we live on the earth and not suspended above it, but you may be able to find something helpful.

• http://www.frfrogspad.com/miscellj.htm#Coriolis
• http://www.physicsforums.com/archive/index.php/t-56083.html

PS: It seems some of those toilets that flush counter-clockwise are just made at different factories. We seem to have factories that make the flush clockwise. So interesting!



11/17/10: edited to make links work and, of course, a typo. .

 

[tonalc1]

Northern vs. Southern Hemisphere differences in posture

Most of my clients have a right long leg. I have a left long leg. I am left-hand dominant. I have heard that some kids who start out lefties are taught to be righties. I have wondered if it was dominant hand related. Now I'm wondering if other countries don't force right-handedness or if it has to do with other ways (driving?) they use their bodies.

 

[Steve Uk]

Northern vs. Southern Hemisphere differences in posture

I think there can be many influences, including injury and birth history. I don't see too much correlation with handedness, but I don't query every client.

I gotta keep searching on this one!