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Old 10-02-2006, 07:58 PM   #97
Erick Mead
 
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Dojo: Big Green Drum (W. Florida Aikikai)
Location: West Florida
Join Date: Jun 2005
Posts: 2,488
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Re: What is "Aikido"?

Quote:
David Skaggs wrote:
http://www.pubmedcentral.nih.gov/art...?artid=1456057

Paradoxical muscle contractions and the neural control of movement and balance

Richard C Fitzpatrick and Simon C Gandevia

Prince of Wales Medical Research Institute, Sydney, New South Wales, 2031, Australia

Email: r.fitzpatrick@unsw.edu.au
" Loram et al. (2005b) go on to show how the brain and the muscle solve this load problem. Since ‘static' equilibrium cannot be achieved by continuous muscle contraction, the system adopts a pattern of cyclic muscle activation, producing repeated ballistic, catch-and-throw movements of the body. The behaviour resembles keeping a balloon in the air by repeated hits. Over time, the balloon maintains a mean position, which might seem an equilibrium point, but at no time does it stay in static equilibrium; it is either being accelerated upward as it is hit or it is in free fall.
Nice to know someone reads it and gets it.

Cordially,

Erick Mead
一隻狗可久里馬房但他也不是馬的.
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