An evaluation of the ergonomics of three computer keyboards

An evaluation of the ergonomics of three computer keyboards...

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PLEASE SCROLL DOWN FOR ARTICLE This article was downloaded by: [2007-2008-2009KoreaUniversity-SeoulCampus] On: 29July2010 Access details: AccessDetails:[subscriptionnumber907466671] Publisher Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37- 41 Mortimer Street, London W1T 3JH, UK Ergonomics Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713701117 An evaluation of the ergonomics of three computer keyboards A. Zecevic; D. I. Miller; K. Harburn To cite this Article Zecevic, A. , Miller, D. I. and Harburn, K.(2000) 'An evaluation of the ergonomics of three computer keyboards', Ergonomics, 43: 1, 55 — 72 To link to this Article: DOI: 10.1080/001401300184666 URL: http://dx.doi.org/10.1080/001401300184666 Full terms and conditions of use: http://www.informaworld.com/terms-and-conditions-of-access.pdf This article may be used for research, teaching and private study purposes. Any substantial or systematic reproduction, re-distribution, re-selling, loan or sub-licensing, systematic supply or distribution in any form to anyone is expressly forbidden. The publisher does not give any warranty express or implied or make any representation that the contents will be complete or accurate or up to date. The accuracy of any instructions, formulae and drug doses should be independently verified with primary sources. The publisher shall not be liable for any loss, actions, claims, proceedings, demand or costs or damages whatsoever or howsoever caused arising directly or indirectly in connection with or arising out of the use of this material.
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An evaluation of the ergonomics of three computer keyboards A. Z ECEVIC*, D. I. M ILLER and K. HARBURN Faculty of Health Sciences, University of Western Ontario, London, Ontario N6A 3K7, Canada Keywords: Typing; 3D video analysis; Wrist angles; Hand posture; CTD. The in¯ uence of keyboard design on hand position, typing productivity and keyboard preference was evaluated by comparing two segmented alternative designs with the linear standard keyboard. The FIXED alternative keyboard featured a split angle of 12 8 and a moderate lateral inclination angle of 10 8 . The adjustable OPEN alternative keyboard was used with a 15 8 split setting, which resulted in a marked 42 8 of demiboard lateral inclination. Sixteen typists, who completed 10 h of training on both alternative keyboards, were videotaped while typing set texts on all three keyboards. Forearm and wrist angles based on three- dimensional video analyses were signi® cantly diOEerent ( p < 0.05) among the three designs tested. Both alternative keyboards placed the forearm and wrist closer to neutral positions than did the standard keyboard. While the OPEN keyboard reduced pronation, it simultaneously increased radial deviation. The FIXED keyboard kept the forearm in moderate pronation and the wrist closer to neutral.
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This note was uploaded on 09/09/2010 for the course INDUSTRIAL IME628 taught by Professor Dr.choi during the Spring '10 term at Korea University.

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An evaluation of the ergonomics of three computer keyboards...

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