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A User-Centered Ergonomic Keyboard Design To Mitigate Work-Related Musculoskeletal Disorders
Ahmed Basager, Quintin L. Williams Jr, Hereford Johnson, Prasanna Mahajan
Pages - 27 - 42     |    Revised - 31-07-2020     |    Published - 31-08-2020
Volume - 10   Issue - 1    |    Publication Date - August 2020  Table of Contents
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KEYWORDS
Ergonomic Keyboard, MSD, Trinity Design, RSI, Keyboard Design.
ABSTRACT
Work-related musculoskeletal disorders are amongst the most prevalent occupational disorders around the United States [1]. Acknowledging ergonomic variables, such as the architecture of workplace computer equipment, may well reduce the likelihood of employees forming musculoskeletal disorders [2]. This work portrays what we understand from research regarding the impact of workplace ergonomic interventions as it relates to the computer keyboard. Classic QWERTY computer keyboard designs are no longer constrained to the conventional horizontal configuration that are ordinarily packaged with individual computers. Now, there are keyboards which are partitioned into two sections, and these haves can have keys oriented at an angle, sloped down to the visual display terminal, or tilted up forming a geometric triangular shape [3]. These interventions are intended to position upper limbs in a more natural orientation resulting in pain alleviation, and a reduction in likelihood of musculoskeletal disorder development from the repetitive use of conventional computer keyboards [1]. Research efforts reviewed in this work also illustrate that experienced typists quickly adapt to alternative keyboard features, and are just as productive in terms of words per minute output. A proposed ergonomic computer keyboard design (Trinity) delivered in this paper maintains the integrity of literature by integrating insights from previous works to reduce musculoskeletal disorders while maintaining interactive user productivity.
1 Bepko J, Katherine K. Common Occupational Disorders: Asthma, COPD, Dermatitis, and Musculoskeletal Disorders. American family physician. 2016;93(12):1000-1006.
2 Moore J, Swanson N. The effect of alternative keyboards on musculoskeletal symptoms and disorders. In Proceedings of the Human-Computer Interaction International Conference. Crete; 2003. p. 103-107.
3 Marklin R, Simoneau G. Design Features of Alternative Computer Keyboards: A Review of Experimental Data. Journal of Orthopaedic and Sports Physical Therapy. 2004.
4 Evidence for the efficacy of ergonomic keyboards and mice in reducing repetitive strain injuries and 10 steps to achieving a healthier workplace. [Internet]. Microsoft.com. 2013 [cited 2020 Mar 16]. Available from: http://download.microsoft.com/download/e/4/1/e413e1ec-b4e7-4b49-b786-f07ba02c57d3/ergonomic_whitepaper.pdf
5 Tjepkema, M., 2003. Reptitive Strain Injury. Health Reports, 14(4), pp.11-31.
6 Barr A, Barbe M. Pathophysiological Tissue Changes Associated With Repetitive Movement: A Review of the Evidence. Physical Therapy. 2002;82(2):173-187.
7 Work-Related Musculoskeletal Disorders & Ergonomics [Internet]. Cdc.gov. 2020 [cited 2020 May 10]. Available from: https://www.cdc.gov/workplacehealthpromotion/health-strategies/musculoskeletal-disorders/index.html
8 Hagberg M, Toomingas A, Tornqvist E. Self-reported reduced productivity due to musculoskeletal symptoms: associations with workplace and individual factors among white-collar computer users. Journal of Occupational Rehabilitation. 2002;12(3):151-162.
9 Gerr F, Marcus M, Ensor C, Kleinbaum D, Cohen S, Edwards A, Gentry E, Ortiz D, Monteilh C. A prospective study of computer users: I. Study design and incidence of musculoskeletal symptoms and disorders. American Journal of Industrial Medicine. 2002;41(4):221-235.
10 Marcus M, Gerr F, Monteilh C, Ortiz D, Gentry E, Cohen S, Edwards A, Ensor C, Kleinbaum D. A prospective study of computer users: II. Postural risk factors for musculoskeletal symptoms and disorders. American Journal of Industrial Medicine. 2002;41(4):236-249.
11 Tittiranonda P, Rempel D, Armstrong T, Burastero S. Effect of four computer keyboards in computer users with upper extremity musculoskeletal disorders. American Journal of Industrial Medicine. 1999;35(6):647-661.
12 McLoone H, Hinckley K, Cutrell E. Ergonomic Principles Applied to the Design of the Microsoft Office Computer Keyboard. Proceedings of the IEA 2003 Congress. 2003;2.
13 Anderson A, Mirka G, Joines S, Kaber D. Analysis of Alternative Keyboards Using Learning Curves. Human Factors: The Journal of the Human Factors and Ergonomics Society. 2009;51(1):35-45.
14 Hargreaves W. Comfort by Design: Selecting an Ergonomic Keyboard. The Ergonomics Report. 2008.
15 Chen C, Burastero S, Tittiranonda P, Hollerbach K, Shih M, Denhoy R. Quantitative Evaluation of 4 Computer Keyboards: Wrist Posture and Typing Performance. Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 1994;38(17):1094-1098.
16 Honan M, Serina E, Tal R, Rempel D. Wrist Postures While Typing on a Standard and Split Keyboard. Proceedings of the Human Factors and Ergonomics Society Annual Meeting. 1995;39(5):366-368.
17 Marklin R, Simoneau G, Monroe J. Wrist and Forearm Posture from Typing on Split and Vertically Inclined Computer Keyboards. Human Factors: The Journal of the Human Factors and Ergonomics Society. 1999;41(4):559-569.
18 Smith M, Karsh B, Conway F, Cohen W, James C, Morgan J, Sanders K, Zehel D. Effects of a Split Keyboard Design and Wrist Rest on Performance, Posture, and Comfort. Human Factors: The Journal of the Human Factors and Ergonomics Society. 1998;40(2):324-336.
19 Schoenmarklin R, Marras W. A Dynamic Biomechanical Model of the Wrist Joint. Proceedings of the Human Factors Society Annual Meeting. 1990;34(10):805-809.
20 Strasser, H., Fleischer, R. and Keller, E., 2004. Muscle strain of the hand-arm-shoulder system during typing at conventional and ergonomic keyboards. Occupational Ergonomics, 4(2), pp.105-119.
21 Tittiranonda, P., Burastero, S. and Rempel, D., 1999. Risk factors for musculoskeletal disorders among computer users. OCCUPATIONAL MEDICINE-PHILADELPHIA, 14, pp.17-38.
22 Simoneau G, Marklin R. Effect of Computer Keyboard Slope and Height on Wrist Extension Angle. Human Factors: The Journal of the Human Factors and Ergonomics Society. 2001;43(2):287-298.
23 Pereira A, Lee D, Sadeeshkumar H, Laroche C, Odell D, Rempel D. The effect of keyboard key spacing on typing speed, error, usability, and biomechanics: Part 1. Human Factors: The Journal of the Human Factors and Ergonomics Society. 2013;55(3):557-566.
24 Yoshitake R. Relationship between Key Space and User Performance on Reduced Keyboards. Applied Human Science. 1995;14(6):287-292.
25 Aerial view of woman's hands typing on computer keyboard [Internet]. Visualhunt.com. [cited 2020 May 18]. Available from: https://visualhunt.com/photo3/1055/aerial-view-of-womans-hands-typing-on-computer-keyboard/.
26 Kim J, Aulck L, Thamsuwan O, Bartha M, Johnson P. The Effect of Key Size of Touch Screen Virtual Keyboards on Productivity, Usability, and Typing Biomechanics. Human Factors: The Journal of the Human Factors and Ergonomics Society. 2014;56(7):1235-1248.
27 Rempel D, Barr A, Brafman D, Young E. The effect of six keyboard designs on wrist and forearm postures. Applied Ergonomics. 2007;38(3):293-298.
Mr. Ahmed Basager
Mechanical & Industrial Engineering University of Illinois at Chicago Chicago, 60607 - United States of America
Dr. Quintin L. Williams Jr
Clinical Assistant Professor/Mechanical & Industrial Engineering, University of Illinois at Chicago, Chicago, 60607 - United States of America
Mr. Hereford Johnson
Consultant/Deliotte Consulting, Chicago, 60606 - United States of America
Mr. Prasanna Mahajan
Mechanical Engineer/ KaVo Kerr, Brea, 92821 - United States of America