Document Detail

An analytical method for characterizing repetitive motion and postural stress using spectral analysis.
MedLine Citation:
PMID:  8472686     Owner:  NLM     Status:  MEDLINE    
The availability of small, inexpensive electrogoniometers has made wrist posture measurement during repetitive manual work practical. Efficient analytical methods, however, are not currently available for quantifying the degree of repetitiveness and the interaction with postural stress. Spectral analysis was investigated as a method for characterizing repetitive wrist motion and postural stress using a simple peg transfer task. Wrist posture was controlled by adjusting the pegboard location and by having subjects reach over an obstruction. Work pace was externally controlled using an auditory signal. Angular wrist flexion/extension and ulnar/radial deviation was recorded using a 60 Hz sample rate. Power spectra were computed by stratifying data segments into individual work elements, divided by break points associated with the task. Peak spectral magnitudes and frequency components corresponded closely with joint displacement amplitudes and repetition rates. Spectrum DC component magnitudes were directly related to sustained wrist postures.
R G Radwin; M L Lin
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Ergonomics     Volume:  36     ISSN:  0014-0139     ISO Abbreviation:  Ergonomics     Publication Date:  1993 Apr 
Date Detail:
Created Date:  1993-05-18     Completed Date:  1993-05-18     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0373220     Medline TA:  Ergonomics     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  379-89     Citation Subset:  IM; S    
Department of Industrial Engineering, University of Wisconsin-Madison 53706.
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MeSH Terms
Cumulative Trauma Disorders / physiopathology*,  prevention & control
Fourier Analysis
Occupational Diseases / physiopathology*,  prevention & control
Posture / physiology*
Psychomotor Performance / physiology*
Range of Motion, Articular / physiology
Signal Processing, Computer-Assisted / instrumentation*
Wrist Injuries / physiopathology*,  prevention & control
Wrist Joint / physiopathology
Grant Support
K01 OH 00107-02/OH/NIOSH CDC HHS

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

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