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研究生: 張柏苓
Po-Ling Chang
論文名稱: 不同阻力與不同座墊位置對自行車踩踏效率的影響
Effects of different resistances and saddle positions on cycling efficiency
指導教授: 相子元
Shiang, Tzyy-Yuang
學位類別: 碩士
Master
系所名稱: 運動競技學系
Department of Athletic Performance
論文出版年: 2012
畢業學年度: 100
語文別: 中文
論文頁數: 104
中文關鍵詞: 座墊高度功率衝量肌電圖舒適度
英文關鍵詞: saddle height, work rate, impulse, electromyography, comfort
論文種類: 學術論文
相關次數: 點閱:264下載:30
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  • 座墊位置明顯影響自行車的下肢踩踏,但是阻力改變後的影響仍鮮少被探究。目的:考量阻力介入的情況,以90rpm的固定節奏探討不同座墊位置對下肢踩踏的影響,從中評估最佳運動效率的座墊位置。文獻探討回顧了座墊高度的定義,調整座墊的影響,以及過去研究中的方法學差異。方法:招募11名無經歷過自行車專業訓練的大專學生(身高174.5 ± 6.1公分、體重70.8 ± 6.2公斤、年齡25.3 ± 1.3歲),經過知情同意書的閱讀後自願參與本實驗。實驗設計以2種功率 × 9種座墊位置進行,並擷取運動學、動因學、肌電圖數據,以及舒適度量表的主觀舒適感受。統計方法使用二因子重複量數變異數分析考驗阻力與座墊位置的相互影響。結果:座墊位置越低越前,下肢關節ROM會減少,踏板衝量不改變,下肢肌肉活化量會降低。舒適度量表則顯示中間座墊高度主觀最舒適。結論:90rpm、低座墊位置,有較佳的踩踏效率。

    Purpose: To investigate the effect of cycling efficiency with different saddle position when resistance increased at 90 rpm. This thesis presented numerous saddle height definitions, and the difference of methodology among previous studies in literature review. Methods: Eleven college participants (height 174.5 ± 6.1 cm, weight 70.8 ± 6.2 kg, age 25.3 ± 1.3 years) joined this experiment voluntarily, riding on a bicycle simulator, which could adjust the saddle position and cycling work rate. In the experiment design with 2 work rates × 9 saddle positions, lower limb kinematic, pedal kinetic, lower limb electromyography, comfort scale data were recorded to assess the efficiency. A two-way repeated measures ANOVA was used for statistics. Results: When resistance increased, lower and more forward saddle position would lead to the decrease of lower limb joint ROM, unchanged pedal impulse, decrease of lower limb muscle activation, and the middle saddle height showed the most comfortable by comfort scale. Conclusion: This thesis found that riding with 90 rpm and lower saddle position would perform more efficiently when resistance increased.

    中文摘要.............................................i 英文摘要............................................ii 謝誌...............................................iii 目次................................................iv 圖次................................................vi 表次...............................................vii 第壹章 緒論..........................................1 一、研究背景..........................................1 二、研究問題..........................................5 三、研究目的..........................................6 四、研究假設..........................................6 五、研究限制..........................................6 六、名詞操作性定義.....................................7 七、研究的重要性......................................10 第貳章 文獻探討......................................11 一、座墊在自行車調整中扮演的角色........................11 二、標準座墊高度調整指標的發展..........................12 三、各種座墊調整的下肢踩踏情況..........................15 四、踩踏節奏與阻力的關聯...............................18 五、舒適度與踩踏效率的評估方式..........................20 六、文獻總結.........................................22 第參章 研究方法......................................23 一、實驗對象與地點....................................23 二、實驗設計.........................................24 三、實驗儀器與設備....................................24 四、實驗控制.........................................27 五、實驗流程.........................................29 六、資料處理.........................................32 第肆章 結果.........................................37 一、全週期之踩踏結果..................................37 二、下踩期之踩踏結果..................................41 三、回昇期之踩踏結果..................................45 四、舒適度...........................................49 五、參數間之相關......................................50 六、踩踏效率比.......................................51 七、下肢關節活動比例..................................52 八、下肢肌肉活化貢獻度................................54 第伍章 討論.........................................56 一、不同座墊位置對下肢踩踏的影響.......................56 二、阻力提高對下肢踩踏的影響...........................62 三、不同座墊位置對主觀舒適度的影響......................67 四、踩踏效率評估.....................................69 五、結論............................................72 六、建議............................................74 引用文獻............................................75 附錄...............................................82

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