摘要
目的：探討騎乘健身車不同座椅位置，對下肢關節角度和肌肉肌電訊號之影響。方法：受測對象以15位健康之大學生以每分鐘80 RPM下，騎乘健身車於6種不同座椅位置(標準位置、前移3公分、後移3公分、上移至腿長5%、下移腿長至5%和10%)最低阻力模式下，騎乘3分鐘，運動學方面利用Motion Analysis紀錄受試者下肢膝關節和踝關節角度資料，在肌電學方面使用BioPacMP150、紀錄受試者下肢肌電訊號變化。結果: 當座椅位置向上移時，肌電活化量有顯著增加，從踩踏分期中發現下肢肌肉，在不同的座椅位置於加速期和回復期肌電活化量是有所不同的趨勢，運動學研究發現當座椅位置越低時膝關節和踝關節夾角會越大，結論：本研究將有助於騎乘健身車復健運動者下肢肌肉力量訓練和預防運動傷害之參考。

Abstract
Purpose: To understand the effect of different seat positions exercise bike riding on the lower limb joint angles and muscle EMG effects. Methods: The subjects were 15 healthy college students. The riding exercise bike in 6 different seat positions (Standard position, forward 3 cm, backward 3 cm, upward to 5% of leg length, downward 5% and 10% of leg length ) at minimum resistance mode 80 RPM per minute. The ride 3 minutes and the kinematics data of the subjects were recorded using Motion Analysis of lower extremity knee and ankle joint angle data, the EMG. For the EMG study BioPacMP150 was used to record each trial and the EMG in different lower limb muscle. Results: When the seat position was upward, the muscle activation significant increased. In different seat position, there are different trends in EMG acceleration period and recovery period. Kinematic study found that the downward position when the seat when the angle between the knee and ankle will be bigger Conclusions: This study will help exercise bike rehabilitation of lower extremity muscle strength and prevention of the sports injuries.

目錄
授權書 ii
學位論文考試審定書 iii
摘要 iv
Abstract v
謝 誌 vi
目錄 vii
表目錄 ix
圖目錄 x
第壹章 緒論 1
第一節 研究背景 1
第二節 研究動機 3
第三節 研究目的 3
第四節 研究範圍與限制 4
第五節 研究假定 4
第六節 名詞操作性定義 5
第貳章 文獻探討 7
第一節 騎乘腳踏車運動學方面之探討 7
第二節 騎乘腳踏車肌電學方面之探討 10
第三節 文獻探討結論 13
第參章 研究方法與步驟 14
第一節 研究對象 14
第二節 實驗時間與地點 14
第三節 研究架構 15
第四節 實驗儀器及設備 16
第五節 實驗場地與儀器架設 20
第六節 實驗方法與步驟 23
第七節 資料收集與處理 29
第八節 統計方法 30
第肆章 結果與討論 31
第一節 下肢膝關節和踝關節角度分析 31
第二節 下肢肌電活化量分析 37
第伍章 結論與建議 59
第一節 結論 59
第二節 建議 60
參考文獻 62
一、中文部分 62
二、英文部分 62
附錄 66
附錄 一 座椅位置對於關節角度與下肢肌電活化關係圖 66
附錄 二 受測者個人基本資料表 74
附錄 三 運動測量問卷 75
附錄 四 受測者試驗同意書 77



表目錄
表 3- 1受試者基本資料 14
表 3- 2 Helen Hayes Marker Set之29顆反光點位置表 23
表 4- 1 膝踝關節夾角平均角度分析表 31
表 4- 2 經LSD法事後膝踝關節夾角分析統計表 32
表 4- 3 不同的座椅位置時下肢肌電活化量分析表 37
表 4- 4 不同的座椅位置時肌電活化量分析表 39
表 4- 5 不同的座椅位置時電活化量分析表 40
表 4- 6 不踩踏加速期肌電活化量分析表 47
表 4- 7 踩踏回復期肌電活化量分析表 47
表 4- 8 不同的座椅位置時肌電活化量分析表 50
表 4- 9 不同的座椅位置時肌電活化量分析表 51



圖目錄
圖 1- 1健身車座椅機構圖 4
圖 1- 2踩踏動作分期 5
圖 1- 3標準座椅量測解說圖 6
圖 2- 1不同踩踏位置對下肢關節角度變化關係圖 8
圖 3- 1研究架構圖 15
圖 3- 2 Motion Eagle 4攝影機 16
圖 3- 3 Motion Analysis場地示意圖 17
圖 3- 4 EvaRT 4.6 操作介面 17
圖 3- 5 Biopac MP150生理訊號擷取器 18
圖 3- 6 AcqKnowledge3.8.1 操作介面 18
圖 3- 7 GIANT 健身車 19
圖 3- 8 實驗場地佈置圖 21
圖 3- 9 騎乘腳踏車時的主要肌肉群 22
圖 3- 10 Helen Hayes反光點人體位置圖(a)正面 (b)背面 24
圖 3- 11 下肢表面肌電電極片黏貼位置圖 25
圖 3- 12 座椅位置變化示意圖 27
圖 3- 13 實驗流程圖 28
圖 4- 1 膝關節和踝關節最大夾角變化示意圖 36
圖 4- 2 不同的座椅位置時下肢肌電活化量示意圖 38
圖 4- 3下肢各別肌肉活化量示意圖 40
圖 4- 4 踩踏分期肌電活化量示意圖 48
圖 4- 5 下肢各別肌肉踩踏週期機肌電示意圖 49
圖 5- 1 健身車與自行車構造差異圖 61

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