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Browsing by Author "鄭稚勇"

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    缺血預處理對Yo-Yo間歇恢復測驗表現之影響
    (2022) 鄭稚勇; Cheng, Chih-Yung
    目的:探討缺血預處理 (ischemic preconditioning, IPC) 對Yo-Yo間歇恢復第一級 (Yo-Yo intermittent recovery level 1, Yo-Yo IR1) 測驗表現之影響。方法:招募12名大專男性甲組橄欖球選手,在實施Yo-Yo IR1測驗前,利用隨機分派及平衡次序方式,分別執行IPC (4 × 5-min 220 mmHg雙側大腿加壓)、偽處理 (SHAM, 4 × 5-min 20 mmHg雙側大腿加壓),以及控制處理 (CON)。並記錄Yo-Yo IR1測驗過程中之完成趟數、完成距離、衰竭時間,以及監測攝氧量 (oxygen uptake, VO2)、攝氧峰值 (VO2peak)、心跳率上升趨勢 (heart rate/4i, HR/4i) 與運動強度自覺程度上升趨勢 (rating of perceived exertion/4i, RPE/4i) 等生理指標;利用近紅外線光譜儀監測整個實驗過程股四頭肌的肌肉氧飽和度。結果:IPC與SHAM之Yo-Yo IR1測驗表現皆顯著高於CON,包含完成距離 (IPC vs. SHAM vs. CON, 1813.3 ± 381.9 vs. 1793.3 ± 335.5 vs. 1680.0 ± 324.5 m) 與衰竭時間 (IPC vs. SHAM vs. CON, 886.5 ± 179.0 vs. 877.5 ± 157.5 vs. 823.9 ± 153.1 s),而IPC與SHAM則無顯著差異。在Yo-Yo IR1測驗時,IPC與SHAM的RPE/4i顯著低於CON (IPC vs. SHAM vs. CON, 1.2 ± 0.3 vs. 1.1 ± 0.5 vs. 1.4 ± 0.4 au),不過,在HR/4i、VO2peak、VO2等生理指標,以及肌肉氧飽和度指標,在三種實驗處理之間並無顯著差異。結論:大專橄欖球選手執行IPC (4 × 5-min雙側大腿) 可能提升Yo-Yo IR1運動表現,並降低運動過程中RPE,但仍無法完全排除安慰劑效應。

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