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Development of a system for analyzing working postures

A Seo1, M Kakehashi, S Tsuru

  • 1Department of Public Health, Hiroshima University School of Medicine, Japan.

Industrial Health
|January 1, 1993
PubMed
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A new system synchronously records and analyzes working postures, physiological data, and work content to assess lumbago risk in industrial health. This technology aids in detailed workload evaluation caused by occupational postures.

Area of Science:

  • Industrial Health
  • Ergonomics
  • Biomedical Engineering

Background:

  • Lumbago is a significant concern in industrial health, often linked to hazardous working postures.
  • Analyzing the relationship between posture, workload, and physiological responses is crucial for prevention.

Purpose of the Study:

  • To develop and evaluate a system for synchronous recording and analysis of working postures, work content, and physiological data.
  • To aid in the assessment of working postures that may lead to lumbago.

Main Methods:

  • A portable unit recorded goniometer (joint angles) and inclinometer (upper body inclination) data, alongside surface electromyogram (electromyography).
  • A video camera captured work content, with a host computer analyzing all data.
  • Postures were automatically classified using a discriminant function based on joint angles and body inclination.

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Main Results:

  • The system successfully integrated posture, physiological, and work content data for simultaneous analysis.
  • Automatic posture classification was achieved using joint angle and inclination data.
  • Trial use in a manual baggage handling model demonstrated the system's utility in evaluating posture-induced workload.

Conclusions:

  • The developed system is effective for detailed workload evaluation related to working postures in industrial settings.
  • This technology offers a valuable tool for identifying and mitigating risks associated with occupational lumbago.