Effects of handle size and shape on measured grip strength
Effects of handle size and shape on measured grip strength
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DOI：
10.1016/j.ergon.2012.01.004
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发表时间：
2012-03-01
影响因子：
3.1
通讯作者：
Dong, Ren G.
中科院分区：
文献类型：
--
作者：
McDowell, Thomas W.;Wimer, Bryan M.;Dong, Ren G.
Jamar手柄测力计是测量握力最常用的仪器。但是，圆柱形手柄上的抓握强度可能与Jamar手柄上观察到的手柄尺寸关系不同。需要进行直接比较研究，以明确两种测力计类型之间的主要差异。本研究利用最近的握力测力计设计沿着与Jamar测力计，以进一步研究这些关系。本研究的目的是比较握力大小的变化如何影响每种测力计类型测量的握力。结果证实，手柄尺寸显着影响所施加的握力测量与两种类型的握力计。Jamar手柄的手柄尺寸效应更明显，尤其是在小手柄直径/跨度时。使用圆柱形手柄观察到的最高夹持力分量位于指尖。Jamar握力测力计可能无法充分反映低跨距和中跨距处的指尖力，因为指尖未施加在Jamar手柄的测力平面内。因此，贾马尔测力计可能无法充分捕捉不同的抓地力spannes.Relevance到行业的指尖力量的变化：这是很重要的，以适当地表征在职业环境中使用的握力，以优化工具和机器手柄的设计。Jamar测力计可能不适合评估大多数工具和机器上的圆柱形或近圆柱形手柄。本研究中使用的圆柱形测力计测量的握力可用于帮助优化手柄设计。由爱思唯尔公司出版
The Jamar handle dynamometer is the most commonly used instrument for measuring grip strength. However, the grip strength applied on a cylindrical handle may not exhibit the same handle size relationship as that observed with the Jamar handle. Direct comparison studies are required to clearly identify the major differences between the two dynamometer styles. This study utilized a recent grip dynamometer design along with the Jamar dynamometer to further examine these relationships. The objective of this study was to compare how changes in grip size affects grip strength measured with each dynamometer style. Results confirm that handle size significantly affects the applied grip strength measured with both types of grip dynamometer. The handle size effect is more pronounced with the Jamar handle, especially at the small handle diameter/span. The highest grip force components observed with the cylindrical handles were found at the fingertips. The Jamar grip dynamometer may not adequately reflect the fingertip forces at the low and middle spans because the fingertips are not applied in the force measurement plane of the Jamar handle. Therefore, the Jamar dynamometer may not adequately capture changes in the fingertip forces under different grip spans.Relevance to Industry: It is important to properly characterize grip strength used in occupational settings in order to optimize tool and machine handle designs. The Jamar dynamometer may not be appropriate for assessing cylindrical or near-cylindrical handles that are found on the majority of tools and machines. The grip strength measured with the cylindrical dynamometer used in this study can be used to help optimize handle designs. Published by Elsevier B.V.