A subject-specific postural instability parameter.
A mathematical modeling approach is applied for deriving subject-specific stabilometric parameters associated with center-of-pressure sway measurements for assessing balancing ability of subjects in quiet standing on a force platform. Based on the inverted pendulum model, a new combined stabilometric parameter including anthropometric characteristics (body height and mass) is obtained which represents a measure of postural instability. A physical meaning of the subject-specific parameter is related to the effective stiffness of the inverted pendulum model.
Institute of Mathematics and Physics, Aberystwyth University, Ceredigion SY23 3BZ, Wales, UK. iva1@aber.ac.uk
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Argatov
D000328:Adult; D000886:Anthropometry; D001696:Biomechanical Phenomena; D006801:Humans; D008954:Models, Biological; D004856:Postural Balance / Q000502:physiology*