Document Detail


Arm tremor and precision of hand force control in a short and long term flight on the MIR-Space-Station.
MedLine Citation:
PMID:  11539538     Owner:  NASA     Status:  MEDLINE    
Abstract/OtherAbstract:
To determine whether long and short time exposure of man in 0g alters normal physiological tremor patterns we recorded arm tremor using an accelerometer as well as hand forces and tremor during constant isometric contraction using a load cell. Arm tremor was decreased during both flights in amplitude and frequency. Shortly after the long term flight arm tremor amplitude was increased, indicating adaptive changes in the tonic reflex loop. Isometric hand tremor remained unchanged during the long and short time flight demonstrating that the contractile properties of hand muscles remained constant. Precision of hand force was decreased until the half duration of the long term flight.
Authors:
E Gallasch; I Kozlovskaya; W N Loscher; A Konev; T Kenner
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta astronautica     Volume:  33     ISSN:  0094-5765     ISO Abbreviation:  Acta Astronaut     Publication Date:  1994 Jul 
Date Detail:
Created Date:  1997-08-23     Completed Date:  1997-08-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9890631     Medline TA:  Acta Astronaut     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  49-55     Citation Subset:  S    
Affiliation:
University of Graz, Department of Physiology, Austria.
Space Flight Mission:
Flight Experiment; Mir Project; Soyuz Project; long duration; manned; short duration
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MeSH Terms
Descriptor/Qualifier:
Arm / physiology,  physiopathology*
Hand Strength / physiology*
Humans
Isometric Contraction / physiology
Mechanoreceptors / physiology
Muscle, Skeletal / physiology
Psychomotor Performance / physiology*
Space Flight*
Tremor / etiology,  physiopathology*
Weightlessness / adverse effects*

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


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