Measuring and characterizing force exposures during computer mouse use
Measuring and characterizing force exposures during computer mouse use
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DOI：
10.5271/sjweh.560
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发表时间：
2000-10-01
影响因子：
6.3
通讯作者：
Rempel, D
中科院分区：
文献类型：
--
作者：
Johnson, PW;Hagberg, M;Rempel, D
目的 本研究的目的是开发和验证一种采样策略，用于表征与计算机鼠标使用相关的手指力暴露。方法在 3 个不同的日子里，在他们执行 (i) 常规工作、(ii) 一系列标准化任务和 (iii) 模拟鼠标使用时，在实际工作站上测量 16 名受试者（8 名男性、8 名女性）的鼠标力。结果施加到鼠标的力在数小时或数天内没有变化。正常工作期间，每小时使用鼠标78.0（SD 40.7）次，占工作时间的23.7（SD 9.5）%。施加到小鼠侧面和按钮的平均力较低，平均分别为最大自主收缩的 0.6% (0.35 N) 和 0.8% (0.43 N)。在标准化任务期间施加到鼠标上的力与常规工作力不同；然而，这两种测量之间存在中度至强相关性。结论关于进行暴露评估研究，3个主要发现是（i）应在受试者执行实际工作时进行鼠标力测量，以便准确表征绝对施加的力，（ii）在执行短期标准化任务期间施加到鼠标的力可用于表征相对暴露并识别对鼠标施加更高力的计算机操作员或工作情况，以及（iii）受试者无法准确模拟鼠标力。
Objectives The purpose of this study was to develop and validate a sampling strategy for characterizing the finger force exposures associated with computer mouse use.Methods Mouse forces were measured from 16 subjects (8 men, 8 women), on 3 separate days, at their actual workstations while they performed (i) their regular work, (ii) a battery of standardized tasks, and (iii) simulated mouse use.Results The forces applied to the mouse did not vary between hours or days. During regular work, the mouse was used 78.0 (SD 40.7) times per hour, accounting for 23.7 (SD 9.5) % of the worktime. The mean forces applied to the sides and button of the mouse were low, averaging 0.6 % (0.35 N) and 0.8 % (0.43 N) of the maximal voluntary contraction, respectively. The forces applied to the mouse during the standardized tasks differed from the regular work forces; however, there were moderate-to-strong correlations between the 2 measures.Conclusions With respect to performing exposure assessment studies, the 3 major findings were (i) mouse force measurements should be made while subjects perform their actual work in order to characterize the absolute applied force accurately, (ii) the forces applied to the mouse during the performance of a short battery of standardized tasks can be used to characterize relative exposure and identify computer operators or work situations for which higher forces are applied to the mouse, and (iii) subjects cannot accurately simulate mouse forces.