Document Detail


Dependence of elbow viscoelastic behavior on speed and loading in voluntary movements.
MedLine Citation:
PMID:  8467888     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The objective of this study was to characterize the mechanical behavior of the elbow joint during voluntary movement, for different speeds of movement and under different loading conditions. Torque pulses of 50 ms duration were applied at movement onset and at peak velocity on random trials. The displacement away from the unperturbed trajectory was used as an indicator of the relative compliance of the elbow under different conditions. We found that both the displacement and the time taken to return to the unperturbed trajectory decreased if the overall speed of the movement increased or if a viscous resistive load was added, implying lower joint compliance. It was possible to account qualitatively for differences in mechanical behavior from observed muscle activation patterns.
Authors:
T E Milner
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Experimental brain research     Volume:  93     ISSN:  0014-4819     ISO Abbreviation:  Exp Brain Res     Publication Date:  1993  
Date Detail:
Created Date:  1993-05-12     Completed Date:  1993-05-12     Revised Date:  2013-12-13    
Medline Journal Info:
Nlm Unique ID:  0043312     Medline TA:  Exp Brain Res     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  177-80     Citation Subset:  IM; S    
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MeSH Terms
Descriptor/Qualifier:
Adult
Elasticity
Elbow Joint / physiology*
Electrodes
Electromyography
Forearm / physiology
Humans
Male
Movement / physiology*
Muscles / innervation,  physiology*
Reflex / physiology
Viscosity

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


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