Upper extremity biomechanics in computer tasks differ by gender.

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
Erik J WonJack T Dennerlein

Abstract

This laboratory study examined gender differences in upper extremity postures, applied forces, and muscle activity when a computer workstation was adjusted to individual anthropometry according to current guidelines. Fifteen men and 15 women completed five standardized computer tasks: touch-typing, completing a form, editing text, sorting and resizing graphical objects and navigating intranet pages. Subjects worked at a height-adjustable workstation with the keyboard on top of the work surface and the mouse to the right. Subjects repeated the text editing task with the mouse in two other locations: a "high" mouse position, which simulated using a keyboard drawer with the mouse on the primary work surface, and "center" mouse position with the mouse between the keyboard and the body, centered with the body's center line. Surface electromyography measured muscle activity; electrogoniometric and magnetic motion analysis system measured wrist, forearm and upper arm postures; load-cells measured typing forces; and a force-sensing mouse measured applied forces. Relative forces applied to the keyboard, normalized muscle activity of two forearm muscles, range of motion for the wrist and shoulder joints and external rotation of the shoul...Continue Reading

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Citations

Jun 8, 2014·European Journal of Applied Physiology·Jacob MeylandErik B Simonsen
Sep 7, 2012·Journal of Manipulative and Physiological Therapeutics·Chiung-Yu ChoRong-Ju Cherng
Nov 29, 2011·Computer Methods and Programs in Biomedicine·Sandra MorelliDaniele Giansanti
Oct 11, 2015·Applied Ergonomics·Katherine PlewaJames P Dickey
Jul 19, 2014·International Journal of Occupational Medicine and Environmental Health·Shunji SakoRyoichi Inaba
Dec 23, 2016·International Journal of Occupational Safety and Ergonomics : JOSE·Shunji SakoRyoichi Inaba
Aug 12, 2015·International Journal of Environmental Research and Public Health·Jelena ResteIvars Vanadzins
Apr 22, 2011·Journal of Occupational and Environmental Medicine·Margit L BleeckerSheryl K Barnes
Jan 12, 2019·International Journal of Occupational Safety and Ergonomics : JOSE·Clarisse GaudezDiane Bailleul
Jan 11, 2020·The British Journal of Surgery·T DalagerK Søgaard
Oct 8, 2015·Work : a Journal of Prevention, Assessment, and Rehabilitation·J L Bruno Garza, J G Young
Jun 29, 2018·Journal of Physical Therapy Science·Szu-Ping LeeLung-Chang Chien
Feb 19, 2021·Applied Ergonomics·Jacquelyn M MaciukiewiczClark R Dickerson
Aug 14, 2018·Applied Ergonomics·Angelica E LangClark R Dickerson

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