Document Detail


Tremor, effect of physical load and reproducibility.
MedLine Citation:
PMID:  3766402     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The effect of three kinds of moderate physical loads on the tremor of the middle finger was studied in eight males: cycling 15 min on an ergometer at a heart rate of 140 beats/min (general dynamic load); lifting a mass of 1 kg by the middle finger at a rate of 30 times/min for 5 min (local dynamic load); and carrying in each hand a 15 kg mass for 5 min. Few effects were observed: 10% decrease of RMS acceleration after local dynamic load and some changes in the power spectrum after general dynamic load. It is concluded that the effect of recent, short time physical load of moderate extent can be neglected as a disturbing factor in the study of the effects of toxic exposure on postural tremor. The inter- and intra-individual variation (over 4 weeks) in nine males and nine females also was studied. The intra-individual variation ranged from 4% for the mean frequency to 35% for the 0-4 Hz band of the power spectrum. The inter-individual variation ranged from 8% for the mean frequency to more than 60% for some frequency bands of the power spectrum. It is concluded that the mean frequency possibly is a sensitive parameter in epidemiologic studies on effects of external toxic exposure on tremor.
Authors:
H J Sallé; M M Verberk; C M Kemper
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  American Industrial Hygiene Association journal     Volume:  47     ISSN:  0002-8894     ISO Abbreviation:  Am Ind Hyg Assoc J     Publication Date:  1986 Sep 
Date Detail:
Created Date:  1986-11-18     Completed Date:  1986-11-18     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0371160     Medline TA:  Am Ind Hyg Assoc J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  563-6     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Biomechanics
Fingers / physiopathology
Humans
Occupational Diseases / physiopathology*
Physical Exertion*
Tremor / physiopathology*

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


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