本研究設計一款新穎的腳踏板，用以提供額外腳踏支撐以協助電信工人於拉線式鐵塔之高架作業。研究中使用6只肌電訊號(EMG)感測器，分別記錄受測者在使用及未使用腳踏板執行天線架設時，左右兩側腓腸肌、脛前肌、背直肌的EMG訊號。十五名健康男性參與實驗，其中包括9名沒有經驗的研究生以及6名有經驗的電信公司工作者，實驗結果以受測者的正規化EMG（%MVC）第50百分位，以及主觀性知覺施力(RPE)調查進行分析。統計結果顯示受測者使用腳踏板時在下背(p<0.001)及下肢(p<0.001)之RPE有顯著降低；而腓腸肌EMG大約減少40%，身體左右兩邊腓腸肌總和及不平衡狀態肌肉負荷分別減少大約40%及52%。本研究結果顯示當工人的腳部擺位受到工作場所的限制時，提供較佳的腳部支撐，可以減少下肢肌群整體和不平衡負荷。

A novel pedal is designed, in this study, to facilitate the work on a guyed telecommunication tower by providing extra foot support to a worker. A data logger with six electromyography (EMG) electrodes was utilized to record subjects’ exertions of gastrocnemius, tibialis anterior, and paraspinals muscles while performing antenna mounting tasks on an imitated quadratic tower with or without the pedal. Six experienced and nine unexperienced subjects were tested. Their muscular loads were assessed according to subjects’ ratings of perceived exertion (RPE) and the 50th percentile of amplitude-probability distribution of individual muscle’s normalized EMG. Subjects demonstrated using the pedal have significantly lower RPE in lower back (p < 0.001) and lower limbs (p < 0.001). When pedal was used, gastrocnemius EMG decreased by approximately 40%. The overall and imbalance muscular loads of bilateral gastrocnemius were also reduced significantly by approximately 40% and 52%, respectively, while using the pedal. The results approve that providing adequate pedal can decrease the overall and imbalanced loads in lower limb muscles while workers’ foot placement was restricted by the worksite.

摘 要 I
誌 謝 III
目 錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
第一節 研究背景與目的 1
第二節 研究架構 2
第二章 文獻回顧 4
第一節 高架作業負荷分析 4
第二節 累積性傷害 9
第三節 肌電訊號量測與肌肉施力主觀性評估 11
第三章 研究方法 14
第一節 輔助腳踏板的設計 14
第二節 受測者 15
第三節 實驗步驟 15
第四節 實驗設計和方法 16
第五節 資料統計分析 22
第四章 結果 23
第一節 肌肉負荷 23
第二節 施力的主觀性認知 27
第五章 討論 30
第六章 結論與建議 33
參考文獻 34
附錄一 受測者須知及實驗同意書 40
附錄二 受測者問卷調查 41
附錄三 受測者個人基本資料表 43
附錄四 受測者5左腳脛前APDF資料分析 44
附錄五 受測肌群標準化EMG之第50百分位(平均值，單位：%MVC) 47
附錄六 主觀性施力知覺評估(RPE)問卷調查結果（無踏板） 48
附錄七 主觀性施力知覺評估(RPE)問卷調查結果（有踏板） 49

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