[TANGO-L] Sliding or walk run??? Re: Computer studies show that perhaps Argentine Tango might be the most energy effecient and natural way to dance...

[Derik Rawson <rawsonweb@YAHOO.COM>]

Dear all:

Whoops!  Now, I am not really sure what the article
acutally said about the method not often used.  I
thought it said sliding was most effecient, but on
closer examination it says walk-run is most effecient,
what ever that is.  Not sure what walk-run means
exactly.  Ah well. Never dull. Sorry. Article looked
really interesting for a while.  Walking is still one
of the most effecient ways, so at least things are
half right.

Derik
d.rawson@rawsonweb.com


--- Derik Rawson <rawsonweb@yahoo.com> wrote:

> Dear All:
>
> Thought that you might find this interesting.  Seems
> that the moves in Argentine Tango might be the most
> energy effecient and natural way to dance, because
> computer studies show that most effecient ways to
> move
> are apparently..
>
> 1. Walking (best for very slow speeds)
> 2. Sliding forward without bobbing up and down (best
> for intermediate speeds)
> 3. Running (best for high speeds)
>
> Article below details computer studies.
>
> Derik
> d.rawson@rawsonweb.com
>
> ***************
> Why We Walk and Run vs. Hopping and Skipping
> By LiveScience Staff
>
> posted: 15 September 2005
> 01:36 pm ET
>
> "The computer simulations conclude that normal
> walking
> is simply most energy efficient for travel at low
> speeds, and running is best at higher speeds. And,
> they report, a third walk-run gait is optimal for
> intermediate speeds, even though humans do not
> appear
> to take advantage of it."
>
> Except Argentines....lol.
>
> ************
>
> Article starts here..
>
> New computer simulations show three modes of
> locomotion are most efficient for humans: walking,
> running, and a third one that for some reason we
> don't
> employ.
>
> Hopping and skipping are no good. And there's a
> reason
> why we don't speed-walk or consistently use other
> odd
> ways of getting around, the research found.
>
> Walking and running at typical paces -- the uniquely
> human gaits you are used to -- use the least amount
> of
> energy compared to the performance results, the
> study
> found.
>
> Cornell University engineers Andy Ruina and Manoj
> Srinivasan compare the mechanics of walking and
> running with "many other strange and unpracticed
> gaits." They used a set of computer models that
> simulated physical measurements such as leg length,
> force, body velocity and trajectory, forward speed
> and
> work.
>
> "We wish to find how a person can get from one place
> to another with the least muscle work," they write.
>
> While we can, if we choose, glide along without much
> bobbing up and down -- such as when a waiter must be
> cautious not to spill coffee filled to the brim --
> we
> don't. Here's why:
>
> The computer simulations conclude that normal
> walking
> is simply most energy efficient for travel at low
> speeds, and running is best at higher speeds. And,
> they report, a third walk-run gait is optimal for
> intermediate speeds, even though humans do not
> appear
> to take advantage of it.
>
> The results are detailed in today's issue of the
> Journal Nature.
>
> A video from the National Science Foundation, which
> supported the work, details the efficiency of
> walking
> and running.
>
>
>
>
>
> 	
> 		
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