Prediction of handgrip forces using surface EMG of forearm muscle's
Prediction of handgrip forces using surface EMG of forearm muscle's
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DOI：
10.1016/j.jelekin.2004.09.001
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发表时间：
2005-08-01
影响因子：
2.5
通讯作者：
van Dieën, JH
中科院分区：
文献类型：
--
作者：
Hoozemans, MJM;van Dieën, JH
手握力的评估是人体工程学评估(例如手动工具)的基本组成部分，但在工作场所很难执行。本研究描述了对8名健康男性受试者的一系列实验，以确定线性回归模型的有效性，该模型使用多达6个前臂肌肉的表面肌电(EMG)来预测握力。对于等长握力任务，使用一系列高达300N的动态力脉冲将肌电归一化到握力校准，从而基于前臂6块肌肉的肌电对握力进行有效预测。握力的实测值与预测值的绝对值相差很小(27~41N)，说明该方法可用于手工具使用的工效学评价。肌电-握力模型似乎受握力宽度的影响最小，即握力宽度为67 mm的模型能够有效地预测59 mm和75 mm握力。此外，研究表明，在被研究的6块前臂肌肉中，至少有3块必须经过评估才能达到足够的效度水平，而这6块前臂肌肉中的哪3块被评估似乎并不相关。(C)2004爱思唯尔有限公司。保留所有权利。
Evaluation of handgrip forces constitutes an essential component of ergonomic evaluation (e.g. of hand tools), but is difficult to perform at the workplace. The present study describes a series of experiments on 8 healthy male subjects to determine the validity of linear regression models using the surface electromyography (EMG) of up to 6 forearm muscles to predict handgrip forces. For isometric gripping tasks, normalized EMG to grip force calibrations using a series of dynamic force bursts up to 300 N resulted in a valid prediction of grip forces based on the EMG of 6 forearm muscles. Absolute differences between observed and predicted grip force were small (between 27 and 41 N) which shows that the proposed method might be used for the ergonomic evaluation of the use of hand tools. The EMG - handgrip force model appeared to be minimally affected by grip width, i.e. a model for 67 mm grip width was able to validly predict grip forces for 59 and 75 mm grip widths. Furthermore, it was shown that of the 6 forearm muscles studied at least 3 have to be assessed to arrive at a sufficient level of validity, while it seems to be irrelevant which 3 of those 6 forearm muscles are assessed. (c) 2004 Elsevier Ltd. All rights reserved.