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首页> 外文期刊>Applied Ergonomics >The effects of video display terminal height on the operator: a comparison of the 15 degrees and 40 degrees recommendations
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The effects of video display terminal height on the operator: a comparison of the 15 degrees and 40 degrees recommendations

机译：视频显示终端高度对操作员的影响：15度和40度建议的比较

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摘要

Prolonged use of video display terminals (VDTs) has been shown to be a risk factor for musculoskeletal and visual discomfort. A standard workplace design recommendation is to position the centre of the VDT 15 degrees below horizontal eye level, Recently a viewing angle of 40 degrees below horizontal has been suggested based on studies that have indicated that this is the preferred viewing angle for visually intensive tasks. The goal of this study was to investigate the effects of these two VDT positions on muscular activity, muscular fatigue, headeck posture, visual acuity, operator performance (productivity and quality), heart rate and operator subjective assessment. The experimental task consisted of reading text from a computer screen and answering reading comprehension questions using a mouse and a keyboard, Each experimental session lasted 2 h, The 40 degrees VDT position showed significantly greater head tilt angles and higher muscle activity levels for six of the 10 neck, shoulder and back muscles sampled. No significant differences in visual acuity, operator performance or heart rate were detected as a result of monitor location. Seven of the 12 subjects preferred the 15 degrees monitor position. (C) 1998 Elsevier Science Ltd. All rights reserved. [References: 35]
机译：长时间使用视频显示终端（VDT）已被证明是肌肉骨骼和视觉不适的危险因素。一个标准的工作场所设计建议是将VDT的中心放置在水平视线以下15度的位置。最近，根据研究表明，这是视觉密集型工作的首选视角，建议将其水平放置在水平线以下40度的视角。这项研究的目的是研究这两个VDT位置对肌肉活动，肌肉疲劳，头/颈部姿势，视敏度，操作者表现（生产率和质量），心率和操作者主观评估的影响。实验任务包括从计算机屏幕上阅读文本并使用鼠标和键盘回答阅读理解问题，每个实验阶段持续2小时，VDT位置40度显示在六个人中，头部倾斜角明显更大，肌肉活动水平更高抽取10个脖子，肩膀和背部肌肉。监护仪位置未检测到视敏度，操作员性能或心率显着差异。 12位受试者中有7位更喜欢15度监视器位置。 （C）1998 Elsevier ScienceLtd。保留所有权利。 [参考：35]

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