Document Detail


Precision of measurements of physical workload during standardised manual handling. Part II: Inclinometry of head, upper back, neck and upper arms.
MedLine Citation:
PMID:  16102977     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
For measuring the physical exposure/workload in studies of work-related musculoskeletal disorders, direct measurements are valuable. However, the between-days and between-subjects variability, as well as the precision of the method per se, are not well known. In a laboratory, six women performed three standardised assembly tasks, all of them repeated on three different days. Triaxial inclinometers were applied to the head, upper back and upper arms. Between-days (within subjects) and between-subjects (within tasks) variance components were derived for the 10th, 50th and 90th percentiles of the angular and the angular velocity distributions, and for the proportion of time spent in predefined angular sectors. For percentiles of the angular distributions, the average between-days variability was 3.4 degrees , and the between-subjects variability 4.0 degrees . For proportion of time spent in angular sectors, the variability depended on the percentage of time spent in the sector; the relative variability was scattered and large, on average 103% between days and 56% between subjects. For the angular velocity percentiles, the average between-days variability was 7.9%, and the average between-subjects variability was 22%. The contribution of the measurement procedure per se to the between-days variability, i.e., the imprecision of the method, was small: less than 2 degrees for angles and 3% for angular velocity.
Authors:
G-A Hansson; I Arvidsson; K Ohlsson; C Nordander; S E Mathiassen; S Skerfving; I Balogh
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-08-18
Journal Detail:
Title:  Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology     Volume:  16     ISSN:  1050-6411     ISO Abbreviation:  J Electromyogr Kinesiol     Publication Date:  2006 Apr 
Date Detail:
Created Date:  2006-01-31     Completed Date:  2006-08-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9109125     Medline TA:  J Electromyogr Kinesiol     Country:  England    
Other Details:
Languages:  eng     Pagination:  125-36     Citation Subset:  IM    
Affiliation:
Department of Occupational and Environmental Medicine, University Hospital, SE-221 85 Lund, Sweden. gert-ake.hansson@ymed.lu.se
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MeSH Terms
Descriptor/Qualifier:
Acceleration
Adult
Biomechanics
Female
Humans
Middle Aged
Movement / physiology*
Neck / physiology*
Posture / physiology*
Upper Extremity / physiology*
Workload*

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


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