Imrhan S N, Sundararajan K
University of Texas, Arlington 76019.
Ergonomics. 1992 Mar;35(3):289-99. doi: 10.1080/00140139208967814.
This paper describes a study to investigate the nature of pull strength with the fingers. Three types of pulls, distinguished by the type of pinch grip used, were investigated. The experiment was performed in two stages, using different subjects (36 male adults in Stage I and 34 in Stage II). The results indicated that finger pull strength depended on the type of pinch grip used but not on the direction of pull (in the saggital plane) nor on hand laterality. Pull forces with the lateral pinch grip were 1.6 times as strong as with the chuck pinch grip, which was, in turn, 1.5 times as strong as with the pulp pinch grip. Ergonomic design applications suggest a larger pinch handle and workspace to accommodate the lateral grip. Finger pull strength could not be predicted very accurately from pure pinch strengths or anthropometric dimensions accurately enough to be of value to designers, even though there were many statistically significant pairwise correlations.
本文描述了一项研究，旨在探究手指拉力的性质。研究调查了三种因捏握方式不同而区分的拉力类型。实验分两个阶段进行，使用了不同的受试者（第一阶段36名成年男性，第二阶段34名）。结果表明，手指拉力强度取决于所用的捏握方式，而不取决于拉力方向（矢状面内）和手的偏侧性。外侧捏握的拉力是卡盘式捏握的1.6倍，而卡盘式捏握又是指腹捏握的1.5倍。人体工程学设计应用表明，需要更大的捏握手柄和工作空间来适应外侧握法。尽管存在许多具有统计学意义的成对相关性，但仅根据单纯的捏力强度或人体测量尺寸无法非常准确地预测手指拉力强度，以至于对设计师没有太大价值。
