摘要
目的：分析24小時及48小時休息時間對於高強度有氧運動的心跳、血壓及可體松等壓力反應的差異。方法：招募10名健康男性大學生，以平衡次序方式進行24小時及48小時模式兩種休息時間的實驗處理。24小時模式為三次的高強度有氧運動間隔休息時間24小時；48小時模式同樣為三次的高強度有氧運動，但間隔休息時間增加為48小時。兩種實驗處理至少分隔一週以上，以20分鐘80%保留心跳率的連續跑步機運動，作為高強度有氧運動。記錄每次運動後30分鐘恢復期，心跳率、血壓及可體松的壓力反應並換算反應值（△）。以相依樣本二因子變異數分析，比較兩種模式之間及三次運動之間，心跳率、血壓及可體松恢復期及反應值的差異，統計顯著水準訂為α=.05。結果：兩種模式及三次高強度有氧運動之間，心跳率、血壓及可體松安靜值皆未呈現顯著差異（p>.05）。△收縮壓、△舒張壓及△可體松同樣無顯著差異（p>.05）。結論：結果顯示，休息時間並不影響三次運動後的壓力反應。認為一週三次的高強度有氧運動為可採行運動方式，建議後續研究可採用一週四次或五次的運動介入，藉此瞭解壓力反應是否有其閾值與發展的進程。

Abstract
Purpose: Analyzed the stress responses of heart rate (HR), blood pressure (BP) and cortisol differences between 24 and 48 hours resting duration after high intensity aerobic exercise (HIAE). Methods: 10 healthy young male college students were recruited. All subjects completed the 24 and 48 hours mode in counter-balance order. 24 hours mode was conducted by 3 times HIAE and separated by 24 hours of each time. 48 hours mode was separated by 48 hours of each time. HIAE were conducted by 80% heart rate reserve of treadmill running for 20 minutes. HR, BP and cortisol responses were recorded during the 30 minutes recovery phase after each HIAE and calculated the values of change (△). Repeated measures two-way ANOVA were used to compare the differences between 2 modes and between 3 HIAE. Results: The baseline of HR, BP and cortisol were not significantly different between 2 modes and between 3 times HIAE (p>.05). The △SBP, △DBP and △cortisol were also not significantly different between 2 mode and 3 times HIAE (p>.05). Conclusion: The results reveal that the resting duration do not affect the stress responses after HIAE. Therefore, three times a week is considered a feasible way when executing HIAE. Future researches need to clarify the threshold and the progress of stress responses during HIAE intervention.

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