高濃度氧氣對國中短跑選手在反覆性衝刺速度表現與生理代謝之影響

Effects of Hyperoxia on Speed Performance and Physiological Responses of Repeated Sprint Exercise in Junior Sprinters

10.5297/ser.1202.008

黃濬棋(Jiun-Chi Huang)；黃三峰(San-Feng Huang)；李玉麟(Yuh-Lin Lee)；李丘威達(Chiou-Wei-Da Lee)

乳酸排除 ； SpO2 ； 平均血壓 ； lactate elimination ； SpO2 ； mean blood pressure

大專體育學刊

12卷2期（2010 / 06 / 01）

69 - 77

繁體中文;英文

本研究主要目的在探討反覆性衝刺運動期間與結束後攝取常氧 (21%) 與高濃度氧氣 (95%) 對於國中短跑 選手在衝刺速度表現與生理代謝反應之影響。方法：以 6 名國中短距離項目徑賽選手為本研究的對象（年齡 15 ± 0.63 歲、身高 166.83 ± 5.23 公分、體重 54 ± 4.34 公斤、訓練年資 1.83 ± 0.75 年），以平衡次序方式進 行前、後共 2 次，中間間隔 3 天，每次 5 x 50 公尺衝刺賽跑測試，並於 3 分鐘的間歇休息期間與所有衝刺運 動結束後的 7 分鐘內分別攝取常氧或高濃度氧氣。衝刺期間與結束後分別取得參加者的速度成績、乳酸、心 跳率與 SpO2 等參數分別以相依樣本 t 考驗與重複量數單因子變異數分析，分別進行不同情況下與相同情況 下不同時間點之分析，顯著水準 p < .05。結果顯示：一、在常氧與高氧情況下的每次衝刺速度之間並未達顯 著之差異 (p > .05)。但是，若比較個別的情況下的 5 次衝刺速度則發現，在常氧下，第 5 次的速度顯著的低 於第 1、2 與 3 次的速度表現 (p < .05)。而高氧的情況，則 5 次的衝刺速度間則沒有顯著的差異產生。二、 於衝刺期間，乳酸堆積的情形於常氧與高氧的情況下產生相同的曲線，並未達顯著的差異。但是，在所有衝 刺結束後 7 分鐘的恢復期中，則於高氧的情況下獲得較佳的乳酸排除效果。三、SpO2 則在大部分的檢測點 發現，於高氧情況下顯著的高於常氧情況下 (p < .05)。四、心跳率與平均血壓則在常氧與高氧等情況下未達 顯之差異，並且在整個過程中擁有相同的曲線變化。本研究結論：依據本研究的結果顯示，在反覆性的衝刺 運動間歇休息中攝取高濃度氧氣，既使在乳酸堆積量與常氧下比較沒有差異，但是，可獲得較佳的運動速度 維持與表現。並且於運動後恢復期間攝取高濃度氧氣具有較佳的乳酸排除效果。

The purpose of this study was to compare the effects of inhaling either hyperoxic (95%) or normoxic (21%) gas at intervals and recovery period of repeated sprint exercise on performance and physiological responses. We hypothesized that 1.95% O2 at intervals would benefit to sprint performance at repeated sprint exercise and, 2. to eliminate the lactate in the recovery period after all sprint trials. Six junior high school male sprinters (age: 15±0.63 yr, height: 166.83±5.23 cm; weight: 54±4.34 kg; training: 1.83±0.75 yr) were participated in two sessions of 5 x 50 m sprint trials with three minutes resting intervals, and subjected to either 95% O2 or 21% O2 during all resting intervals and seven minutes recovery period after all sprint exercises were observed. No significant differences on speed of same trails' sprinting between hyperoxia and normoxia were observed when compared within each session. Speed at last trial (5th sprinting) was significantly dropped than 1st, 2nd and 3rd sprinting trials (p＜.05) under normoxia, but same situation was not observed under hyperoxia. 2. The lactate accumulations had same curve pattern within all sprint trials between hyperoxia and normoxia, but within recovery period of each session the elimination rate of lactate was more efficient under hyperoxia compared to normoxia. 3. The SpO2 were significantly higher at most checking points under hyperoxia than normoxia. 4. Heart rate and blood pressure were not significantly changed between hyperoxia and normoxia, and same curve pattern within all checking points were also observed. The data showed that sprint quality was maintained under hyperoxia although the accumulations of lactate were not significant differences from normoxia within all interval sprint trials, and hyperoxia in the recovery period also showed more efficient on blood elimination rate.

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