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Potentially problematic postures during work site keyboard use.

Nancy A Baker1, Mark Redfern

  • 1Department of Occupational Therapy, 5012 Forbes Tower, University of Pittsburgh, Pittsburgh, PA 15260, USA. nab36@pitt.edu

The American Journal of Occupational Therapy : Official Publication of the American Occupational Therapy Association
|August 28, 2009
PubMed
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Potentially risky keyboard postures are common. Occupational therapists should assess both right and left sides to create effective interventions for keyboard users.

Area of Science:

  • Ergonomics
  • Occupational Health
  • Biomechanics

Background:

  • Repetitive keyboard use is prevalent in modern workplaces.
  • Certain postural behaviors during keyboard use are associated with musculoskeletal discomfort and injury.
  • Systematic assessment of these behaviors is crucial for effective intervention.

Purpose of the Study:

  • To quantify the frequency and distribution of potentially risky postural behaviors in keyboard users.
  • To examine associations and differences in postural behaviors between the right and left sides.
  • To inform occupational therapy interventions for keyboard users.

Main Methods:

  • Utilized the Keyboard-Personal Computer Style instrument to assess postural behaviors.
  • Analyzed data from 43 participants.

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  • Evaluated frequency, distribution, and side-to-side associations/differences in specific postural criteria.

    • Main Results:

    • Static postures frequently exhibited one criterion, while dynamic postures showed broader distribution.
    • Significant associations were found between right and left sides for several postural elements, including shoulder and elbow flexion, hand displacement, and wrist extension.
    • Significant differences between sides were observed for hand displacement, thumb posture, digit count, and metacarpophalangeal hyperextension.

    Conclusions:

    • Potentially problematic postural behaviors are frequently observed in keyboard users.
    • Occupational therapists need to conduct systematic, bilateral assessments (right and left sides) of keyboard users' postures.
    • Targeted interventions based on comprehensive assessments can improve outcomes for keyboard users.