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

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Author

  • B. Juul-Kristensen
  • Gert-Åke Hansson
  • N. Fallentin
  • J.H. Andersen
  • Charlotte Ekdahl

Summary, in English

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.

Publishing year

2001

Language

English

Pages

517-524

Publication/Series

Applied Ergonomics

Volume

32

Issue

5

Document type

Journal article

Publisher

Elsevier

Topic

  • Production Engineering, Human Work Science and Ergonomics

Keywords

  • Goniometer
  • Repetitive work
  • Observation method
  • Inclinometer

Status

Published

Research group

  • Human Movement: health and rehabilitation

ISBN/ISSN/Other

  • ISSN: 1872-9126