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Stability Criteria for Controlling Standing in Able-Bodied Subjects

Author(s):

M.R. Popovic, K. Nakazawa, I. Pappas, T. Keller, M. Morari
Conference/Journal:

vol. AUT99-19
Abstract:

The experiments performed in ourlaboratory revealed that able-bodied subjects use four high- level control strategies to maintain stable quiet standing. It was found that there is a direct correlation between the control strategy used by a subject and the position of the subject's center of pressure (COP). Hence, the overall COP area was divided into four zones: a high preference zone, a low preference zone, an undesirable zone and an unstable zone. Division of the COP surface into these distinct zones is a new concept which should enable researchers designing standing prostheses to better understand the basic design requirements for such devices. Standing prostheses, designed to provide stable and safe hand free" quiet standing, should maintain the COP position in the high and low preference zones. A mathematical description of these stability zones was proposed.

Further Information
Year:

1999
Type of Publication:

(04)Technical Report
Supervisor:



No Files for download available.
% Autogenerated BibTeX entry
@TechReport { PopEtal:1999:IFA_1631,
    author={M.R. Popovic and K. Nakazawa and I. Pappas and T. Keller and M. Morari},
    title={{Stability Criteria for Controlling Standing in Able-Bodied
	  Subjects}},
    institution={},
    year={1999},
    number={},
    address={},
    month=nov,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=1631}
}
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