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Related Experiment Videos

Posture, discomfort and performance in a VDT task.

M H Liao1, C G Drury

  • 1Department of Industrial Engineering, University at Buffalo, State University of New York, 14260, USA. mhl@advtek.com.tw

Ergonomics
|February 7, 2001
PubMed
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Adjusting keyboard height impacts typing posture and comfort, which can affect performance. While discomfort and postural shifts negatively influenced error rates, the effects were not substantial in this 2-hour typing task.

Area of Science:

  • Ergonomics
  • Human-Computer Interaction
  • Occupational Health

Background:

  • Workplace design and posture are critical for performance.
  • Previous research focused on visual inspection tasks.
  • Understanding the interplay between posture, comfort, and performance is essential for workplace improvements.

Purpose of the Study:

  • To investigate the interactions between workplace setup, work duration, discomfort, working posture, and performance.
  • To examine these interactions within a 2-hour typing task.
  • To evaluate the effects of keyboard height on posture, discomfort, and typing performance.

Main Methods:

  • Three keyboard heights were utilized to manipulate working posture (joint angles, postural shifts).
  • Discomfort was measured using rating of perceived discomfort and body part discomfort.

Related Experiment Videos

  • Performance was assessed through typing speed, error rate, and error correction rate.

    • Main Results:

    • Keyboard height significantly influenced the working postures adopted by participants.
    • The rate of postural shifts correlated with perceived discomfort, aligning with previous findings in VDT tasks.
    • Increased discomfort and postural shift rates were associated with adverse effects on performance, specifically higher error rates, although the impact was not strongly pronounced.

    Conclusions:

    • The study partially supported the hypothesized relationships between posture, comfort, and performance.
    • Keyboard height is a factor influencing working posture and subsequent discomfort.
    • While discomfort and postural shifts can negatively impact typing performance, their effect on error rates may be limited.