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研究生:張富涵
研究生(外文):Fu-Han Chang
論文名稱:持續性使用電腦滑鼠之上肢肌肉疲勞評估
論文名稱(外文):Evaluation of Upper-Extremity Muscle Fatigue Resulting from Continuous Use of Computer Mouse
指導教授:黃耀輝黃耀輝引用關係
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:職業醫學與工業衛生研究所
學門:醫藥衛生學門
學類:公共衛生學類
論文種類:學術論文
論文出版年:2008
畢業學年度:97
語文別:中文
論文頁數:75
中文關鍵詞:電腦滑鼠肌肉疲勞肌電圖VDTlog
外文關鍵詞:computer mousemuscle fatigueEMGVDTlog
相關次數:
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由於電腦圖像使用介面的普及,電腦滑鼠已成為電腦作業中不可或缺與使用頻率最高的指向裝置。本研究之目的為利用電腦作業活動監測軟體VDTlog與表面肌電圖,並配合肌肉骨骼不適自我評估量表,共同評估持續性使用電腦滑鼠之肌肉疲勞的情形,並探討VDTlog軟體與表面肌電圖參數之相關性。
本研究募集30位過去一年無上肢肌肉骨骼相關病史之男性受試者,於己事先設置好之人因工程實驗室內,連續以滑鼠操作一電腦遊戲兩小時。利用己安裝在電腦內之VDTlog軟體監測電腦遊戲中滑鼠使用情形,並同時利用表面肌電圖監測受試者右手伸指肌(extensor digitorum communis)、屈指淺肌(flexor digitorum superficialis)與兩側上斜方肌(bilateral upper trapezius)之肌肉疲勞情形,而利用自我評估量表讓受試者於電腦遊戲開始前、操作電腦遊戲一小時後與實驗結束後評估自覺上肢肌肉骨骼疼痛與疲勞情形。
研究結果顯示,經過兩小時之電腦遊戲後,各肌電圖量測肌肉經頻率與振幅合併分析法(JASA),發現皆有疲勞情形產生。且以右側上斜方肌之肌肉疲勞數為最多,第一小時有9條,第二小時有10條肌肉產生疲勞。自我評估量表結果顯示,上肢各部位疲勞程度皆有隨時間而顯著增加的趨勢,且以肩、頸與眼部之疲勞程度為最高,實驗後之平均得分分別為3.7、3.5與4.4分。而從VDTlog記錄結果發現,電腦遊戲過程中以執行移動滑鼠之頻率最高,佔所有執行動作頻率之48%,而第一、第二小時電腦遊戲移動滑鼠之平均速度為0.72 pixel/ms與0.71 pixel/ms,最大加速度分別為0.13 pixel/ms2、0.125 pixel/ms2,故第二小時之滑鼠移動速度、最大加速度皆比第一小時慢。若以每十分鐘為一時間階段,觀察兩指標之變化,發現皆有隨時間呈一固定變化的趨勢,故平均速度與最大加速度可考慮用來當成操作滑鼠之動作表現評估指標。由VDTlog軟體與表面肌電圖合併分析結果發現,屈指淺肌(FDS)之中位頻率與VDTlog參數之相關性較大,分別與滑鼠移動速度呈正相關,而與敲擊左鍵、右鍵及拖曳之鍵上停置時間呈負相關。故VDTlog軟體可有效的評估電腦滑鼠使用情形,或由移動滑鼠之速度或加速度來評估動作表現的變化,並可與肌電圖或自我評估量表結合,作為評估持續性使用滑鼠之肌肉疲勞的工具。由於VDTlog不易干擾電腦作業員之作業,使用方便,故未來期望將VDTlog應用於職場實地研究(field study),也可為與電腦作業相關之肌肉疲勞評估提供更多指標。
Due to the prevalence of graphical user interface, the computer mouse has become an indispensable input device and is frequently used in the computer works. The aims of this study were to assess the upper-extremity muscle fatigue during the continuous computer mouse use by VDTlog monitoring system, EMG, and self-report for upper-extremity muscles fatigue, and to evaluate the correlation between VDTlog monitoring system and EMG in the fatigue assessment.
There were 30 male subjects recruited who didn’t have musculoskeletal disorders of upper extremity in the past year. All subjects were asked to use computer mouse to play a computer game continuously for two hours in an ergonomics laboratory. The VDTlog monitoring system software program was installed in the computer to monitor the activities of computer mouse. EMG was used to monitor the activities of extensor digitorum communis (EDC), flexor digitorum superficialis (FDS), and bilateral upper trapezius during the computer game playing. At the beginning, the end of the first hour of playing game and the end of the second hour of playing, respectively, subjects were asked to assess the upper-extremity muscles fatigue by a self-report questionnaire.
The results of joint analysis of EMG spectrum and amplitude (JASA) showed that all target muscles presented significant muscle fatigue by EMG measurement after two hours computer game playing, especially for the right upper trapezius of 9 and 10 muscles in the first and the second hour of computer game playing, respectively. After two-hour computer game playing, it was also found that the extent of self-report fatigue of all parts of upper-extremity increased along with time, especially for the shoulder, neck and eyes, with average scores were 3.7, 3.5 and 4.4, respectively. Besides, the results of VDTlog monitoring showed that mouse movement accounted for the most frequency of mouse activities during the computer game playing, 48% of all mouse actions. The average velocity of mouse movement in the first and the second hours of computer game playing were 0.72 pixel/ms and 0.71 pixel/ms, respectively, and the 99 percentile acceleration were 0.130 pixel/ms2 and 0.125 pixel/ms2. The average velocity and the 99 percentile acceleration were slower in the second hour of computer game playing. The average velocity and maximum acceleration of mouse movement also presented similar trends along the time, and may be used as performance indicators for mouse activities. Combined analysis of VDTlog with EMG, we found that the median frequency of flexor digitorum superficialis (FDS) was correlated with the VDTlog related indicators, for example, positively correlated with the average velocity of mouse movement and negatively correlated with the key holding time of left button clicking, right button clicking and dragging activities. It’s concluded that VDTlog monitoring system is able to assess the activities and performance of computer mouse use by the change in velocity or acceleration of mouse movement. VDTlog can also be combined with EMG to assess the upper-extremity muscle fatigue resulting from continuous use of computer mouse. Since it won’t interfere with the computer works and is convenient to operate, VDTlog is anticipated to be used in field study to generate more useful indicators in order to evaluate the muscle fatigue resulting from continuous computer works.
摘要 I
Abstract III
第一章 緒論 1
第二章 相關文獻回顧 2
2.1 電腦於各工作類別之使用情形 2
2.2 電腦作業對健康之相關影響 2
2.3 造成電腦工作者肌肉骨骼不適之危險因素 3
2.3.1 與工作相關因素 4
2.3.1.1 工作站的設置 4
2.3.1.2 作業內容形式 5
2.3.2 工作活動因子 6
2.3.3 社會心理因素 7
2.3.4 個人因素 7
2.4 長時間電腦遊戲對健康之相關影響 7
2.5 電腦滑鼠使用與上肢肌肉骨骼不適之相關性 8
2.6 肌肉疲勞 9
2.7 常見電腦作業相關之肌肉骨骼不適評估方式 10
2.7.1 自我評估量表 10
2.7.2 肌電圖(Electromyography, EMG) 10
2.7.3 電腦作業活動監測軟體 12
2.7.4、常見電腦作業與肌肉骨骼不適評估相關研究之限制 16
2.8 研究目的 17
第三章 材料與方法 18
3.1 研究設計 18
3.2 研究對象 18
3.3 電腦作業環境 18
3.4 實驗工具 19
3.4.1 VDTlog電腦鍵盤滑鼠活動記錄軟體 19
3.4.2 表面肌電圖儀器 20
3.4.2.1 表面電極 20
3.4.2.2 資料擷取系統 21
3.4.2.3 肌電訊號分析 21
3.4.2.4 頻率與振幅合併分析法(Join Analysis of EMG Spectrum
And Amplitude, JASA) 23
3.4.3自填試問卷 23
3.4.4電腦執行任務 24

3.5實驗流程 24
3.6資料處理與分析 28
3.7 VDTlog軟體與肌電圖紀錄之同步 28
第四章 結果 30
4.1受試者基本資料 30
4.2 VDTlog紀錄結果 30
4.2.1滑鼠動作執行頻率分析 30
4.2.2鍵上停置時間 31
4.2.3滑鼠移動速度與加速度之探討 32
4.3肌電圖量測結果 34
4.3.1每一小時肌電圖振幅與頻率量測結果 34
4.3.2每一小時電腦任務之JASA分析結果 39
4.3.3每一時間階段,各量測肌肉肌電圖之振幅、頻率隨時間變化之 趨勢 43
4.4上肢肌肉骨骼疼痛、疲勞程度自我評估量表結果 47
4.5 VDTlog資料與肌電圖資料合併分析 48
4.5.1 VDTlog軟體與肌電圖量測之同步化檢驗 48
4.5.2 VDTlog軟體與肌電圖量測結果之相關性 48
第五章 討論 52
5.1受試者基本條件探討 52
5.2 肌肉疲勞之判定 52
5.3 VDTlog軟體紀錄結果之探討 53
5.3.1滑鼠動作執行頻率探討 53
5.3.2 鍵上停置時間變化之探討 54
5.3.3 移動速度與加速度 54
5.4 肌電圖量測結果之探討 56
5.5上肢肌肉骨骼疼痛疲勞自我評估量表結果 58
5.6 VDTlog與肌電圖合併分析結果之討論 59
5.6.1 VDTlog與肌電圖結果之相關性 59
5.6.2 VDTlog與肌電圖之GEE model結果 60
5.7 研究限制 62
第六章 結論 63
參考文獻 64
附錄一:受試者同意書 71
附錄二:基本資料問卷 72
附錄三:上肢肌肉疼痛疲勞量表 75



圖2.1 電腦於各不同作業別之使用情形 2
圖2.2 電腦使用者上肢肌肉骨骼傷害危險因子模式研究 4
圖2.3 電腦工作站設計之人因工程指引 5
圖2.4 不同電腦作業之鍵盤滑鼠使用比率圖 6
圖3.1 電腦作業站設置示意圖 19
圖3.2 伸指肌(EDC)表面電極黏貼位置示意圖 20
圖3.3 屈指淺肌(FDS)表面電極黏貼位置示意圖 20
圖3.4 左、右上斜方肌(Left,Right Upper Trapezius)電極黏貼位置示意圖 21
圖3.5 參考電極黏貼位置示意圖 21
圖3.6 振幅與頻率合併分析(JASA)圖 23
圖3.7 實驗流程圖 27
圖4.1 每一小時各滑鼠動作執行頻率比率圖 31
圖4.2 滑鼠移動平均速度隨時間變化趨勢圖 33
圖4.3 滑鼠移動最大加速度隨時間變化趨勢圖 33
圖4.4 每一小時電腦遊戲中,伸指肌(EDC)振幅之累積百分比 35
圖4.5 每一小時電腦遊戲中,屈指淺肌(FDS)振幅之累積百分比 35
圖4.6 每一小時電腦遊戲,左側上斜方肌(Left-trapezius)振幅之累積百分 36
圖4.7 每一小時電腦遊戲,右側上斜方肌(Right-trapezius)振幅之累積百分 比 36
圖4.8 每一小時電腦遊戲,伸指肌(EDC)中位頻率之累積百分比 37
圖4.9 每一小時電腦任務,屈指淺肌(FDS)中位頻率之累積百分比 37
圖4.10 每一小時電腦遊戲,左側上斜方肌(Left-trapezius)中位頻率之累積 百分比 38
圖4.11 每一小時電腦遊戲,右側上斜方肌(Right-trapezius)中位頻率之累積 百分比 38
圖4.12 兩小時電腦遊戲中,右手伸指肌(EDC)肌電振幅(%MVE)與中位頻率(MDF)合併分析圖(JASA) 39
圖4.13 兩小時電腦遊戲中,右手屈指淺肌(FDS)肌電振幅(%MVE)與中位頻 率(MDF)合併分析圖(JASA) 40
圖4.14 兩小時電腦遊戲中,左手上斜方肌(Left Upper Trapezius)肌電振幅(%MVE)與中位頻率(MDF)合併分析圖(JASA) 40
圖4.15 兩小時電腦遊戲中,右手上斜方肌(Right Upper Trapezius)肌電振幅(%MVE)與中位頻率(MDF)合併分析圖(JASA) 41
圖4.16 每一小時受測肌肉肌電圖JASA分析結果比較圖 41
圖4.17 伸指肌(EDC)振幅隨時間變化趨勢圖 43
圖4.18 屈指淺肌(FDS)振幅隨時間變化趨勢圖 43
圖4.19 左側上斜方肌(Left-trapezius)振幅隨時間變化趨勢圖 44

圖4.20右側上斜方肌(Right-trapezius)振幅隨時間變化趨勢圖 44
圖4.21 伸指肌(EDC)中位頻率隨時間變化趨勢圖 45
圖4.22 屈指淺肌(FDS)中位頻率隨時間變化趨勢圖 45
圖4.23 左側上斜方肌(Left-trapezius)中位頻率隨時間變化趨勢圖 46
圖4.24 右側上斜方肌(Right-trapezius)中位頻率隨時間變化趨勢圖 46
圖5.1 滑鼠移動平均速度隨時間變化趨勢圖 56
圖5.2 滑鼠移動最大加速度隨時間變化趨勢圖 56

表2.1 肌肉疲勞之定義 9
表2.2 VDTlog 記錄檔格式範例 14
表2.3 VDTlog記錄之各動作參數計算定義 15
表2.4 VDTlog記錄各滑鼠動作執行頻率定義 16
表4.1 受試者人口學變項資料 30
表4.2 每一小時電腦遊戲中,各滑鼠動作執行頻率 31
表4.3 每一小時電腦遊戲中,滑鼠各動作之平均鍵上停置時間 32
表4.4 每一小時電腦遊戲中,滑鼠移動之平均速度、平均 33
表4.5 每一小時電腦遊戲中,肌電圖平均振幅(%MVE)與中位頻率(Hz)值 34
表4.6 二小時電腦遊戲後,各量測肌肉振幅(%MVE)與中位頻率(MDF)合併 分析結果(JASA) 42
表4.7 上肢肌肉骨骼疼痛程度自我評估結果 47
表4.8 上肢肌肉骨骼疲勞程度自我評估結果 48
表4.9 受試者VDTlog參數與各量測肌肉肌電圖振幅與頻率之相關係數 50
表4.10各量測肌肉肌電圖振幅、中位頻率與VDTlog參數之GEE model分 析結果 51
表5.1主觀與客觀肌肉疲勞之定義 53
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