Upper eztremity postures during notebook computer use in common portable computing scenarios
This study quantified postures of users working on a notebook computer situated on their lap and tested the effect of using a commercial lapdesk. Fifteen adults performed a standardized computing task on a notebook computer placed on a desk (DESK), the lap (LAP) and a lapdesk (LD) while a motion analysis system measured head and wrist postures. The LAP configuration increased forward head tilt by 6° and wrist extension by 8°compared to the DESK configuration. Ulnar wrist deviation was decreased by 9° while neck flexion was unaffected. Compared to the LAP, LD reduced forward head tilt by 4°, neck flexion by 2° and wrist extension by 9°. Posture was relatively better on the DESK compared to the LAP while use of the lapdesk resulted in the best posture; however, all configurations resulted in high values of wrist extension, wrist deviation, and forward head tilt.
Krishna Asundi Dan Odell Jack T. Dennerlein
Harvard School of Public Health Microsoft Hardware Corporation
国际会议
17th World Congress on Ergonomics(第十七届国际人类工效学大会)
北京
英文
1-5
2009-08-09（万方平台首次上网日期，不代表论文的发表时间）