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A Design Contribution to Ergonomic PC Mice Development.

Miguel L Lourenço1,2, Rui A Pitarma1,3, Denis A Coelho4

  • 1Technical Scientific Unit of Engineering and Technology, Research Unit for Inland Development, Instituto Politécnico da Guarda, 6300-559 Guarda, Portugal.

International Journal of Environmental Research and Public Health
|July 9, 2022
PubMed
Summary

This study introduces innovative computer mouse designs to reduce forearm pronation and improve comfort during prolonged use. New ergonomic mouse shapes were developed and tested, showing promise for preventing musculoskeletal disorders.

Keywords:
ergonomic computer mouse designergonomic product developmenthuman-systems interactionusability

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Area of Science:

  • Ergonomics and Human-Computer Interaction
  • Product Design and Biomechanics

Background:

  • Computer mice, essential for human-computer interaction, can cause musculoskeletal disorders due to intensive use.
  • Existing ergonomic guidelines for hand tools and anthropometric data are crucial for designing effective computer pointing devices.
  • Traditional horizontal and vertical mice present ergonomic challenges, including forearm pronation and inadequate hand support.

Purpose of the Study:

  • To develop novel computer mouse shapes that minimize forearm pronation and enhance hand-palm holding.
  • To apply a structured design methodology integrating ergonomic principles and user characteristics.
  • To validate the efficacy of new mouse geometries through usability and electromyographic evaluations.

Main Methods:

  • A literature review of ergonomic guidelines and human-system interaction principles was conducted.
  • New mouse concepts were generated using creative tasks based on design specifications.
  • Four novel shapes were evaluated, leading to the prototyping of two new computer mouse geometries.
  • Usability and electromyographic assessments were performed on prototypes and commercial mice with 20 participants.

Main Results:

  • Two new computer mouse geometries were successfully designed and prototyped.
  • Electromyographic evaluation indicated potential benefits of the new designs in reducing muscle strain.
  • Usability testing provided validation for the ergonomic improvements of the developed prototypes.
  • The slanted conical innovative shape demonstrated particular promise in reducing forearm pronation.

Conclusions:

  • The developed computer mouse designs effectively address ergonomic issues associated with traditional pointing devices.
  • The study validates a design methodology for creating user-centered ergonomic computer peripherals.
  • The new mouse geometries offer a promising solution for preventing work-related musculoskeletal disorders from computer mouse usage.
  • Further research and development are warranted to optimize and commercialize these innovative ergonomic designs.