King Phyllis M, Finet Michelle
University of Wisconsin-Milwaukee, Milwaukee, WI 53201, USA.
J Hand Ther. 2004 Oct-Dec;17(4):412-6.
This study examined the accuracy of estimating actual grip force by measuring perceived force simulation using a hand dynamometer. A multifactorial design was used to ascertain whether there was a difference between actual and perceived grip force performance using three levels of force, three different age groups, males and females, and both dominant and nondominant hands. One hundred ninety-eight participants were asked to exert an exact amount of grip force marked on a dynamometer, and then asked to replicate the same amount without the visual feedback of the dial. This was repeated for both hands for all three force levels. Significant differences were found between the actual and perceived grip force performance using three different levels of force, among the age categories, and between males and females. This study provides evidence that use of the psychophysical method of grip force measurement may not be an accurate methodology for determining task demands involving grip force.
本研究通过使用握力计测量感知力模拟来检验估计实际握力的准确性。采用多因素设计，以确定在三种力水平、三个不同年龄组、男性和女性以及优势手和非优势手的情况下，实际握力表现与感知握力表现之间是否存在差异。198名参与者被要求施加握力计上标记的精确握力，然后在没有刻度盘视觉反馈的情况下重复相同的力度。对所有三种力水平的双手都重复此操作。结果发现，在三种不同力水平下、不同年龄组之间以及男性和女性之间，实际握力表现与感知握力表现存在显著差异。本研究提供了证据，表明使用握力测量的心理物理学方法可能不是确定涉及握力的任务需求的准确方法。
