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Quantifying repetitive hand activity for epidemiological research on musculoskeletal disorders--part I: individual exposure assessment.

Authors
Bao-S; Spielholz-P; Howard-N; Silverstein-B
Source
Ergonomics 2006 Mar; 49(4):361-380
NIOSHTIC No.
20030457
Abstract
An exposure measurement approach is described for quantifying repetitive hand activity of individual workers in a prospective epidemiological study on work-related upper extremity musculoskeletal disorders. A total of 733 subjects were involved in this study at the baseline. Hand activities were quantified by force and repetition. Force levels were measured by workers' self-reports, ergonomists' estimates based on observation and measurements with instrumentation. Repetition levels were measured by detailed time-motion analyses using two repetitive hand activity definitions and ergonomists' estimates using scales for the American Conference of Governmental Industrial Hygienists hand activity level and the Strain Index. Results showed that the present exposure assessment approach seems to be able to quantify force level and repetitiveness of hand activities. Repetitive hand activity is quantified differently depending on whether forceful hand exertion or repetitive muscle activity is used as the definition. These hand activity definitions may quantify different physical exposure phenomena. Individual exposure assessment is important in epidemiological research of musculoskeletal disorders as there are interactions between the individual subjects and the measured parameters. These interactions may vary between exposure parameters.
Keywords
Repetitive-work; Epidemiology; Hand-injuries; Musculoskeletal-system-disorders; Job-analysis; Occupational-exposure; Cumulative-trauma-disorders; Physiology; Etiology; Exposure-assessment
Contact
Safety & Health Assessment & Research for Prevention (SHARP) Program, Washington State Department of Labor and Industries, P.O. Box 44330, Olympia, WA 98504, USA
CODEN
ERGOAX
Publication Date
20060315
Document Type
Journal Article
Email Address
baos235@LNI.WA.GOV
Funding Amount
289069
Funding Type
Cooperative Agreement
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Identifying No.
Cooperative-Agreement-Number-U01-OH-007316
Issue of Publication
4
ISSN
0014-0139
Priority Area
Disease and Injury: Musculoskeletal Disorders of the Upper Extremities
Source Name
Ergonomics
State
WA
Performing Organization
Washington State Department of Labor and Industries
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