Smith M J, Karsh B T, Conway F T, Cohen W J, James C A, Morgan J J, Sanders K, Zehel D J
University of Wisconsin-Madison, Department of Industrial Engineering 53706, USA.
Hum Factors. 1998 Jun;40(2):324-36. doi: 10.1518/001872098779480451.
The purpose of this study was to examine differences in experienced typists' performance, posture, and musculoskeletal pain when using a split, adjustable (SA) computer keyboard and when using a standard flat keyboard. In addition, the use of a wrist rest was examined for performance, posture, and musculoskeletal pain effects. Eighteen participants were exposed to the SA keyboard and a flat keyboard in a laboratory study of text typing for four consecutive hours on five days. The results indicated that after just 2 h of orientation and practice, the participants could perform as well on the SA keyboard as on the flat keyboard. The SA keyboard provided advantages for reduced wrist/hand pronation. There was no difference between the keyboards in the level of musculoskeletal pain reported by participants after typing. However, they reported increased pain in the back, neck, shoulders, and wrists from the beginning to the end of each of the experimental periods for both keyboards.
本研究的目的是考察经验丰富的打字员在使用分体式、可调节（SA）电脑键盘和标准平面键盘时，其打字表现、姿势及肌肉骨骼疼痛方面的差异。此外，还研究了使用腕托对打字表现、姿势及肌肉骨骼疼痛的影响。在一项实验室文本打字研究中，18名参与者连续五天每天在SA键盘和平面键盘上各进行4小时的打字操作。结果表明，仅经过2小时的适应和练习，参与者在SA键盘上的打字表现就与在平面键盘上一样好。SA键盘在减少手腕/手部旋前方面具有优势。参与者在打字后报告的肌肉骨骼疼痛程度在两种键盘之间没有差异。然而，他们报告说，在每个实验阶段，从开始到结束，两种键盘都会使背部、颈部、肩部和手腕的疼痛加剧。
