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首页> 外文期刊>Medical engineering & physics. >Development of a new dynamometer for measuring grip strength applied on a cylindrical handle.
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Development of a new dynamometer for measuring grip strength applied on a cylindrical handle.

机译：研发了一种新的测力计，用于测量施加在圆柱手柄上的握力。

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The objective of this study is to enhance the understanding of the hand grip force applied to a cylindrical handle and to develop a new dynamometer for measuring maximum grip force or grip strength. Specifically, a 40 mm instrumented cylindrical handle with six measuring arms was developed. A theoretical model was proposed and used to analyze the principle of the measurement. Human test subjects were used in conducting two sets of experiments to evaluate the handle and to assess the measurement method. This study confirmed that some friction force exists in the grip-only action, but its level is not comparable with the normal force. This study also found that the friction force can stabilize the grip action and marginally increase the grip strength. No reliable correlation between the grip strengths measured with the 40 mm cylindrical handle and Jamar handle with a 47.6 mm span was observed. This suggests that grip strength measured with Jamar handle may not be reliably applicable to the design and risk assessment of some tools or machines with cylindrical handles. In contrast, the cylindrical handle proved to be able to determine the overall grip strength for a subject, as well as show the grip force distribution around the circumference of the handle. The handle is accurate with less than 4% error, and it demonstrates that the measurement is independent of the loading position along the handle. Therefore, this study concluded that this new dynamometer is suitable for measuring grip strength with sufficient precision.
机译：这项研究的目的是增进对施加在圆柱形手柄上的握力的理解，并开发出一种新型测力计，用于测量最大握力或握力。具体来说，开发了带有六个测量臂的40毫米仪器化圆柱形手柄。提出了理论模型，并用于分析测量原理。人体测试对象用于进行两组实验以评估手柄和评估测量方法。这项研究证实，仅抓握动作中存在一定的摩擦力，但其水平不能与法向力相比。这项研究还发现，摩擦力可以稳定抓地力并略微增加抓地力。在使用40 mm圆柱形手柄和跨度为47.6 mm的Jamar手柄测得的握力之间没有可靠的相关性。这表明用Jamar手柄测量的握力可能无法可靠地应用于某些带有圆柱形手柄的工具或机器的设计和风险评估。相反，事实证明，圆柱形手柄能够确定对象的总体握力，并显示出手柄圆周周围的握力分布。手柄准确无误，误差小于4％，这表明测量结果与手柄的加载位置无关。因此，这项研究得出结论，这种新型测功机适合于以足够的精度测量握力。

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