Supertraining

[Prev] Thread [Next]  |  [Prev] Date [Next]

[Supertraining] Re: Oscar Pistorius - a considerable advantage? carruthersjam Mon Jul 14 01:25:18 2008

--- In [EMAIL PROTECTED], [EMAIL PROTECTED] wrote:

> Really?   The blades are NOT more elastic and therefore do NOT 
store energy
> more efficiently leading to more economic energy expenditure?    
How does that
> relate to the construction and properties of the blades?   Even more
> interesting; how does that reflect on DR Weyand's hypothesis and 
proofs of elastic
> rebound facilitation of RFD in high speed running.
> 
> Without (admittedly) reading the entire test data and analysis, 
these
> conclusions seem "specious" to me on their face value regarding 
application to the
> question and contradictory to previous assertions by the scientists 
in related
> issues of locomotion.  

****
Here are some of the previous statements regarding this topic: 
 
http://au.news.yahoo.com/070717/2/13zgn.html

""The prosthetic legs that double-amputee sprinter Oscar Pistorius
races with provide less air resistance than normal legs, the IAAF has
said.

Davies said the initial research also showed that the way Pistorius
distributed energy was virtually the opposite to able-bodied runners.
And unlike able-bodied runners, Pistorius was faster at the end of
the race instead of the beginning.

Pistorius was able to run with his prosthetic blades at the same 
speed as the able-bodied sprinters with about 25 percent less energy 
expenditure," the report concluded. 

FURTHER TESTS
The report said the returned energy from the prosthetic blades, known 
as "cheetahs", was close to three times higher than the ankle joint.
"The mechanical advantage of the blade in relation to the healthy 
ankle joint of an able-bodied athlete is higher than 30 percent," it 
added.

"It is evident that an athlete using the Cheetah prosthetic is able 
to run at the same speed as able bodied athletes with lower energy 
consumption."

=================
Jamie Carruthers
Wakefield, UK