ILO Home
Go to the home page
Site map | Contact us Français | Español

CISDOC database

Document ID (ISN)65754
CIS number 95-2288
ISSN - Serial title 0169-8141 - International Journal of Industrial Ergonomics
Year 1994
Convention or series no.
Author(s) Aarċs A.
Title Relationship between trapezius load and the incidence of musculoskeletal illness in the neck and shoulder
Bibliographic information Dec. 1994, Vol.14, No.4, p.341-348. Illus. 22 ref.
Abstract A relationship between trapezius load measured by electromyography (EMG) and the incidence of musculoskeletal illness in the neck and shoulder regions, was investigated for both assembly workers and VDT operators. For assembly workers, the static trapezius load was significantly reduced from 4.3% MVC (Maximum Voluntary Contraction) to 1.4% MVC as a group median value after an ergonomic adaptation of their work places. Musculoskeletal sick-leave was significantly reduced from 22.9 days to 1.8 days as a medium duration per-man-labour year for the same group. All three groups of VDT operators reported significantly less intensity or duration of pain either in the neck or shoulder region after ergonomic intervention. The trapezius load was reduced for all groups post vs. prior intervention. The results from this study indicate that the trapezius load may be a predictor for development of musculoskeletal illness in the neck and shoulder regions.
Descriptors (primary) muscular work; visual display terminals; musculoskeletal diseases; assembly and disassembly; shoulder; measurement of load on muscles; neck disorders
Descriptors (secondary) muscle testing; ergonomics; ergonomic evaluation; electromyography; cross-sectional study
Document type D - Periodical articles
Country / State or ProvinceNorway
Subject(s) Ergonomics and work organization
Broad subject area(s) Physiology, ergonomics
Browse category(ies) Diseases of the musculoskeletal system
Office work
Visual display terminals (VDTs)