Evaluation of Muscle Load of Hand and Forearm During Operation of Cross-shaped Switch by Thumb

机译：拇指横型开关在横型开关运行过程中的肌肉负荷的评价

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The purpose of this study is to try an evaluation of muscle load of hand and forearm during the cross-shaped switch operation. Five young and right-handed college students participated in the experiment in which the portable game device was used. They performed four kinds of operation task with metronome. EMG was derived from 4 muscles and transformed to the ratio to maximal voluntary contraction (%MVC). Uncomfortable feeling was also measured after the each task. From a correlation analysis between the %MVC and the uncomfortable feeling, higher correlation was found in the muscles which have direct connection with the push motion. Through a regression analysis which adopted the %MVC as an explanatory variable and the uncomfortable feeling as an objective variable, the regression coefficients in the flexor pollicis brevis muscle were higher than those of the extensor pollicis brevis muscle. In conclusion, possibility of the evaluation of the muscle load during the operation of cross-shaped switch by thumb was shown.

机译：本研究的目的是在十字形开关操作期间尝试评估手和前臂的肌肉负荷。五名年轻和右撇子大学生参与其中使用便携式游戏设备的实验。他们用节拍器执行了四种操作任务。 EMG衍生自4个肌肉，并转化为比率到最大自愿收缩（％MVC）。在每项任务之后也衡量了不舒服的感觉。从％MVC和不舒服的感觉之间的相关性分析，在具有推动运动的肌肉中发现了更高的相关性。通过回归分析，通过将％MVC作为解释性变量和不舒服的感觉作为客观变量，屈肌粉碎肌的回归系数高于伸肌粉碎肌的射击肌。总之，示出了通过拇指在交叉开关操作期间评估肌肉负荷的可能性。

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《International Ergonomics Association, Congress》|2018年|xvii 443 pages|共7页
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Motonori Ishibashi; Risa Hashimoto;
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中图分类 TB18-532;
关键词
Electromyogram; Operability; Uncomfortable feeling;

机译：肌电图;可操作性;感情不舒服;

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Evaluation of Muscle Load of Hand and Forearm During Operation of Cross-shaped Switch by Thumb

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