Typeprestatie en spierspanning bij gebruik van het verticale Yogitype toetsenbord
SourceTijdschrift voor Ergonomie, 30, 2, (2005), pp. 19-26
Article / Letter to editor
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SW OZ DCC CO
SW OZ DCC KI
SW OZ NICI CO
SW OZ NICI KI
Tijdschrift voor Ergonomie
SubjectAction, intention, and motor control
The Yogitype keyboard is a midway-split and backwards-upright positioned variant of the QWERTY keyboard. Users make keystrokes in the direction of the frontal body plane and key identities are visible from the inner side of the board. Performance with the Yogitype keyboard was evaluated by having nine experienced typists type standardized texts for 20 minutes twice a week over a period of four weeks. At the end of each week, typing performance, subjective comfort and muscular activation in 6 wrist/finger flexors and extensors and biceps and trapezius were compared for the Yogitype and traditional keyboards. Normal, accurate typing speeds of 300 keystrokes per min were regained within two weeks of practice, and subjective comfort was high. Wrist/finger flexors and extensors exhibited lower muscular activation with the vertical keyboard. No difference was found for trapezius and biceps. Implications of the vertical keyboard for the prevention of Work Related Upper Extremity Disorders are discussed.
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