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Assessment of work postures and movements using a video-based observation method and direct technical measurements.

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Title: Assessment of work postures and movements using a video-based observation method and direct technical measurements.
Authors: Juul-Kristensen, B., Hansson, G.-A., Fallentin, N., Andersen, J.H., Ekdahl, C.
Source: Applied Ergonomics. Oct2001, Vol. 32 Issue 5, p517-524. 8p. 1 Black and White Photograph, 5 Charts.
Subjects: Physiological aspects of work, Posture, Work, Evaluation research, Work environment, Research methodology, Research, Body movement, Comparative studies, Video recording, Regression analysis
Abstract: The aim was to study postures and movements during repetitive work using video-based observations and direct technical measurements (inclinometers and goniometers). A total of 21 healthy women from a poultry processing plant volunteered. Neck flexion > 20 degrees was registered during 92% of the recorded time with the observation method, while the corresponding value measured with the inclinometer was 65%. Different reference positions and different measured variables apparently contributed to the differences between the methods. Mean wrist position was measured to be 0 degrees in flexion-extension and 19 degrees in ulnar deviation. Differences between the methods in the registered hand positions were small. The number of repetitive movements/minute and mean power frequency (MPF) of the electrogoniometer data was significantly related, showing both variables to be relevant measures of repetitiveness. In conclusion, the observation method and the technical measurements supplemented each other well. A reduction in class categories was suggested for future observation methods. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The aim was to study postures and movements during repetitive work using video-based observations and direct technical measurements (inclinometers and goniometers). A total of 21 healthy women from a poultry processing plant volunteered. Neck flexion > 20 degrees was registered during 92% of the recorded time with the observation method, while the corresponding value measured with the inclinometer was 65%. Different reference positions and different measured variables apparently contributed to the differences between the methods. Mean wrist position was measured to be 0 degrees in flexion-extension and 19 degrees in ulnar deviation. Differences between the methods in the registered hand positions were small. The number of repetitive movements/minute and mean power frequency (MPF) of the electrogoniometer data was significantly related, showing both variables to be relevant measures of repetitiveness. In conclusion, the observation method and the technical measurements supplemented each other well. A reduction in class categories was suggested for future observation methods. [ABSTRACT FROM AUTHOR]
ISSN:00036870
DOI:10.1016/S0003-6870(01)00017-5