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Re: Definitions of running (was RE: RE: Complaining)

The problem with the new definition of running is that means elephants are 
running when at top speed even though they never get all four feet off the 
ground as the murderous Muybridge first documented for trotting and galloping 
horses. But elephants are not doing what full blown running horses, rhinos 
and humans can. It is more descriptive to say that elephants semi-run, which 
is why I said true run for Triceratops, which being more stongly flexed 
limbed and having an enormous pelvis for thigh muscles should have been able to 
achieve a suspended phase full running trot or pace faster than elephants 
can do. 


In a message dated 4/30/13 2:14:58 PM, tholtz@umd.edu writes:

<< the current definition is a dynamic one: running requires a compliant 
gait (that is, the limb is most compressed at the midpoint of the stride). 
Compare walking and jogging in place at exactly the same pace to understand the 
difference. >>

In a message dated 4/30/13 2:21:11 PM, mrvivianallen@googlemail.com writes:

<< Technically a run is when your potential energy and kinetic energy are

in-phase (i.e. you are moving fastest when you are highest, in flight) and

a walk is the opposite (so you are moving slowest at your highest, i.e. As

you vault over your limb at midstance). >>