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Document ID (ISN)106615
CIS number 07-614
ISSN - Serial title 0169-8141 - International Journal of Industrial Ergonomics
Year 2006
Convention or series no.
Author(s) Fostervold K.I., Aarċs A., Lie I.
Title Work with visual display units: Long-term health effects of high and downward line-of-sight in ordinary office environments
Bibliographic information Apr. 2006, Vol.36, No.4, p.331-343. Illus. 55 ref.
Abstract This study investigated the long-term effects of vertical monitor placement in office workplaces. Random assignment was used in creating a high line-of-sight (HLS) group and a downward line-of-sight (DLS) group, each including 75 subjects. The line-of-sight to the midpoint of the screen was 15° below horizontal for the HLS-group and 30° for the DLS-group. Measurements were taken at set-up and again 12 months later. Significant differences, favouring the DLS-group compared to HLS-group, were found for subjective symptoms, oculomotor capacity and self-reported sick leave. The DLS-group exhibited flexion of both the neck and back about 5° more than the HLS-group. However, no differences were found for diagnosed work-related disorders, clinical symptoms or electromyographic activity. The results correspond with previous laboratory findings and give additional empirical support from real work environments on the beneficial effects of DLS in visual display unit work.
Descriptors (primary) equipment layout; health hazards; office work; computer terminals
Descriptors (secondary) subjective assessment; sickness absenteeism; symptoms; upper extremity disorders; man-computer interfaces; case-control study; sitting posture
Document type D - Periodical articles
Country / State or ProvinceNorway
Subject(s) Ergonomics and work organization
Broad subject area(s) New technologies
Browse category(ies) Office work
Visual display terminals (VDTs)