使用鍵盤之肌力分析

The Analysis of The muscular Strength on Typing with Keyboard

盧瑞琴(Lai-Chin Lu) ； 洪偉傑(Wei-Jie Hung) ； 吳家維(Jia-Wei Wu) ； 許哲維(Jhe-Wei Syu)

《商業現代化學刊》 5卷4期 (2010/09) Pp. 131-146

https://doi.org/10.6132/JCM.2010.5.4.07

摘要

The comparisons of muscular Strength while typing with keyboards as keyboard cushion and frame attached were interpreted in this study. The study design was typing with the combinations of a keyboard cushion with a frame, a keyboard cushion without frame, a frame without keyboard cushion, and without frame without keyboard cushion. We measured the different activities of Extensor Carpi Ulnaris electromyography from left and right front arms. The average age of five male subjects was 21.3 year-old. Subjects were tested with typing with each of keyboard combinations for 2 minutes. Results: (1) Typing without keyboard cushion, but with frame, had the maximum of NEMG (%) and the maximum of angle of wrists upward among four different methods . Therefore, we concluded that people had more muscular Strength of Extensor Carpi Ulnaris while typing with upward wrists.(2) There was no significant difference of NEMG (%) of Extensor Carpi Ulnaris among four different combinations of keyboard (P=0.99).

關鍵字

肌電儀 ； 手靠墊 ； 鍵盤 ； 尺側伸腕肌

並列摘要

The comparisons of muscular Strength while typing with keyboards as keyboard cushion and frame attached were interpreted in this study. The study design was typing with the combinations of a keyboard cushion with a frame, a keyboard cushion without frame, a frame without keyboard cushion, and without frame without keyboard cushion. We measured the different activities of Extensor Carpi Ulnaris electromyography from left and right front arms. The average age of five male subjects was 21.3 year-old. Subjects were tested with typing with each of keyboard combinations for 2 minutes. Results: (1) Typing without keyboard cushion, but with frame, had the maximum of NEMG (%) and the maximum of angle of wrists upward among four different methods . Therefore, we concluded that people had more muscular Strength of Extensor Carpi Ulnaris while typing with upward wrists.(2) There was no significant difference of NEMG (%) of Extensor Carpi Ulnaris among four different combinations of keyboard (P=0.99).

並列關鍵字

Electromyography ； Keyboard cushion ； Keyboard ； Extensor Carpi Ulnaris