Wrist and forearm posture from typing on split and vertically inclined computer keyboards.
Hum Factors
; 41(4): 559-69, 1999 Dec.
Article
en En
| MEDLINE
| ID: mdl-10774127
ABSTRACT
A study was conducted on 90 experienced office workers to determine how commercially available alternative computer keyboards affected wrist and forearm posture. The alternative keyboards tested had the QWERTY layout of keys and were of three designs split fixed angle, split adjustable angle, and vertically inclined (tilted or tented). When set up correctly, commercially available split keyboards reduced mean ulnar deviation of the right and left wrists from 12 degrees to within 5 degrees of a neutral position compared with a conventional keyboard. The finding that split keyboards place the wrist closer to a neutral posture in the radial/ulnar plane substantially reduces one occupational risk factor of work-related musculoskeletal disorders (WMSDs) ulnar deviation of the wrist. Applications of this research include commercially available computer keyboard designs that typists can use and ergonomists can recommend to their clients in order to minimize wrist ulnar deviation from typing.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Postura
/
Muñeca
/
Procesamiento de Texto
/
Periféricos de Computador
/
Rango del Movimiento Articular
/
Antebrazo
Tipo de estudio:
Risk_factors_studies
Límite:
Adult
/
Humans
/
Middle aged
Idioma:
En
Revista:
Hum Factors
Año:
1999
Tipo del documento:
Article
País de afiliación:
Estados Unidos