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Differences between work methods and gender in computer mouse use.

J Wahlström1, J Svensson, M Hagberg

  • 1Department of Occupational Medicine, Sahlgrenska University Hospital, Göteborg, Sweden. jens.wahlstrom@ymk.gu.se

Scandinavian Journal of Work, Environment & Health
|December 5, 2000
PubMed
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Gender and computer mouse operating methods significantly impact musculoskeletal load. Women experienced higher loads than men, and specific methods like arm-based operation increased neck/shoulder strain.

Area of Science:

  • Ergonomics and Human Factors
  • Occupational Health
  • Biomechanics

Background:

  • Computer mouse usage is prevalent, leading to concerns about repetitive strain injuries.
  • Understanding factors influencing musculoskeletal load is crucial for developing effective ergonomic interventions.

Purpose of the Study:

  • To determine the effects of gender and different computer mouse operating methods on user performance and musculoskeletal load.
  • To compare the biomechanical and subjective responses between male and female computer mouse users.

Main Methods:

  • Electromyography (EMG) and force-sensing mouse data were collected from 30 participants (15 men, 15 women).
  • Musculoskeletal load was assessed using EMG of forearm and trapezius muscles, wrist movement analysis via electrogoniometry, and subjective ratings.

Related Experiment Videos

  • Participants used three distinct mouse operating methods: their habitual technique, a wrist-based method, and an arm-based method.

    • Main Results:

    • Women exhibited greater wrist extension, range of motion, and ulnar deviation, with higher forces and extensor digitorum muscle activity.
    • The arm-based method led to increased wrist extension, trapezius muscle activity, and higher perceived exertion in the neck and shoulders.
    • The wrist-based method resulted in higher lateral forces on the mouse and elevated perceived exertion in the wrist and hand-finger regions.

    Conclusions:

    • Significant gender differences in musculoskeletal load were observed, with women generally experiencing higher loads.
    • Computer mouse operating methods demonstrably affect performance and musculoskeletal strain.
    • Subjective ratings provide valuable insights into characterizing muscular load during computer mouse use.