Influence of smartphone use styles on typing performance and biomechanical exposure

Ko Ping-Hsin; Hwang Yaw-Huei; Liang Huey-Wen

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Influence of smartphone use styles on typing performance and biomechanical exposure

机译：智能手机使用方式对打字性能和生物力学暴露的影响

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摘要

Twenty-seven subjects completed 2-min typing tasks using four typing styles: right-hand holding/typing ( S-thumb) and two-hand typing at three heights ( B-low, B-mid and B-high). The styles had significant effects on typing performance, neck and elbow flexion and muscle activities of the right trapezius and several muscles of the right upper limb ( p < 0.0001 by repeated-measure analysis of variance). The subjects typed the fewest words ( error-adjusted characters per minute: 78) with the S-thumb style. S-thumb style resulted in similar flexion angles of the neck, elbow and wrist, but significantly increased muscle activities in all tested muscles compared with the B-mid style. Holding the phone high or low reduced the flexion angles of the neck and right elbow compared with the B-mid style, but the former styles increased the muscle activity of the right trapezius. Right-hand holding/typing was not a preferable posture due to high muscle activities and slow typing speed.

机译：二十七名受试者使用两种打字风格完成了2分钟的打字任务：右手握住/打字（S拇指）和两只手在三个高度（B低，B中和B高）打字。这些样式对打字性能，右斜方肌和右上肢的几条肌肉的颈项和肘部屈曲以及肌肉活动有显着影响（通过方差的重复测量分析，p <0.0001）。受试者以S型拇指输入最少的单词（每分钟经过错误调整的字符：78个）。 S型拇指导致颈部，肘部和腕部的屈曲角度相似，但与B型中等姿势相比，所有测试肌肉的肌肉活动明显增加。与B-mid风格相比，手持电话时高或低会降低颈部和右肘的弯曲角度，但前者会增加右斜方肌的肌肉活动。由于肌肉活动频繁且打字速度较慢，因此不宜采用右手握住/打字的姿势。

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来源
《Ergonomics》 |2016年第6期|821-828|共8页
作者
Ko Ping-Hsin; Hwang Yaw-Huei; Liang Huey-Wen;
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作者单位

Natl Taiwan Univ, Inst Occupat Med & Ind Hyg, Coll Publ Hlth, Taipei, Taiwan|Kang Ning Gen Hosp, Dept Phys Med & Rehabil, Taipei, Taiwan;

Natl Taiwan Univ, Inst Occupat Med & Ind Hyg, Coll Publ Hlth, Taipei, Taiwan;

Natl Taiwan Univ Hosp, Dept Phys Med & Rehabil, Taipei, Taiwan|Natl Taiwan Univ, Coll Med, Taipei, Taiwan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类
关键词
Mobile phone; posture; muscle activity; surface electromyography; ergonomics;

机译：手机;姿势;肌肉活动;表面肌电图;人体工学;

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Influence of smartphone use styles on typing performance and biomechanical exposure

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