键盘操作中腕托对肌肉疲劳影响的定量化研究

doi:10.11985/2017.04.004

电气工程学报 ›› 2017, Vol. 12 ›› Issue (4): 22-26.doi: 10.11985/2017.04.004

键盘操作中腕托对肌肉疲劳影响的定量化研究

陈登凯,刘天宇,陈婧

西北工业大学陕西省工业设计工程实验室西安 710072

收稿日期:2017-01-10 出版日期:2017-04-25 发布日期:2019-12-23
作者简介:陈登凯男 1975年生, 副教授,主要研究方向为工业设计。|刘天宇男 1994年生,硕士研究生,主要研究方向为人机工效学。
基金资助:
西北工业大学研究生创意创新种子基金项目资助

A Quantitative Study About How the Wrist Rest Affect Muscle Fatigue During Keyboard Operation

Chen Dengkai,Liu Tianyu,Chen Jing

Shanxi Engineering Laboratory for Industrial Design Northwestern Polytechnical University Xi'an 710072 China

Received:2017-01-10 Online:2017-04-25 Published:2019-12-23

摘要/Abstract

摘要：

通过研究用户在使用普通键盘进行文本输入时前肢及背部的三块肌肉的表面肌电信号（sEMG）,探讨腕托缓解肌肉疲劳的实际效用,为改进腕托以及键入姿势提供更加符合人体工效学的理论依据。实验共测试10名被试者在不使用腕托以及使用三种不同材质腕托的状态下前肢及背部肌肉的表面肌肉信号,并对所得数据进行标准化处理,再使用统计分析软件SPSS对标准化后的数据（NsEMG）进行数据分析。结果表明背部上斜方肌（UT）为键盘操作过程中最易产生疲劳的肌肉,且其肌肉疲劳与腕托的材质使用与否并无关系,而使用布料腕托时指浅屈股（FDS）标准肌电值出现显著差异（P<0.05）。

关键词: 表面肌电, 键盘腕托, 数据标准化, 肌肉疲劳

Abstract:

In this paper, the value of the wrist supports is studied exactly in reducing muscular fatigue through researching surface electromyogram signal (sEMG) on three forearm muscles and one back muscle during the computer keying task. The sEMG is measured and collated from 10 test recipients in four different conditions in the experiment. After normalizing the sEMG data (NsEMG), SPSS 20 is used to analyze the NsEMG. The conclusion of the study is that upper trapezius (UT) is easiest muscle to fatigue while in the keyboard task and its degree of tiring does nothing to do with the wrist supports. But there is a remarkable difference in using the clothing wrist supports reflected by flexor digitorum superficialis (FDS) (P<0.05).

Key words: Surface electromyography, keyboard wrist rest, data normalization, muscle fatigue

中图分类号:

TB18

陈登凯,刘天宇,陈婧. 键盘操作中腕托对肌肉疲劳影响的定量化研究[J]. 电气工程学报, 2017, 12(4): 22-26.

Chen Dengkai,Liu Tianyu,Chen Jing. A Quantitative Study About How the Wrist Rest Affect Muscle Fatigue During Keyboard Operation[J]. Journal of Electrical Engineering, 2017, 12(4): 22-26.

图/表 3

参考文献 21

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因变数	（I）	（J）	平均值差异（I-J）	显著性
FDS	1	2	7.009 00*	0.001
		3	3.749 21	0.070
		4	2.550 62	0.212
	2	1	-7.009 00*	0.001
		3	-3.259 79	0.113
		4	-4.458 38*	0.033
	3	1	-3.749 21	0.070
		2	3.259 79	0.113
		4	-1.198 59	0.554
	4	1	-2.550 62	0.212
		2	4.458 38*	0.033
		3	1.198 59	0.554

键盘操作中腕托对肌肉疲劳影响的定量化研究

A Quantitative Study About How the Wrist Rest Affect Muscle Fatigue During Keyboard Operation

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