Document Detail


The sway-density curve and the underlying postural stabilization process.
MedLine Citation:
PMID:  15322309     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The sway-density curve (SDC) is computed by counting, for each time instant, the number of consecutive samples of the statokinesigram falling inside a circle of small radius R. The authors evaluated the sensitivity of the curve to the variation of R and found that in the range 3-5 mm the sensitivity was low, indicating that SDC is a robust descriptor of posturographic patterns. In addition, they investigated the relationship between SDC and the underlying postural stabilization process by decomposing the total ankle torque into three components: a tonic component (over 69 & of the total torque), an elastic torque caused by ankle stiffness (about 19 &), and an anticipatory active torque (about 12 &). The last component, although the smallest in size, is the most critical for the overall stability of the standing posture and appears to be correlated with the SDC curve.
Authors:
Marco Jacono; Maura Casadio; Pietro G Morasso; Vittorio Sanguineti
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Motor control     Volume:  8     ISSN:  1087-1640     ISO Abbreviation:  Motor Control     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-08-23     Completed Date:  2004-11-30     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9706297     Medline TA:  Motor Control     Country:  United States    
Other Details:
Languages:  eng     Pagination:  292-311     Citation Subset:  IM    
Copyright Information:
Copyright 2004 Human Kinetics Publishers, Inc.
Affiliation:
Center of Bioengineering, Hospital La Colletta, Arenzano, Italy.
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MeSH Terms
Descriptor/Qualifier:
Adult
Ankle / physiology*
Humans
Kinesiology, Applied / instrumentation
Models, Biological*
Postural Balance*
Sensitivity and Specificity
Torque

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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