常低氧與不同負重、速度對上坡走耐力指標之影響

背景：登山難度會受到地形、速度、負重與高度的影響，尋找適當的負荷組合來自我訓練是需要的。目的：探討在上坡10%2km/h、3km/h/、4km/h與4km/h12.5%和4km/h15.0%實施不同負荷重量與3500m低氧下對各速度刺激下心跳率（HR）、乳酸值（La）、運動自覺量表（RPE）之比較。方法：招募10位自願參加之健康無運動習慣之男性大專生（身高173.80±0.42；體重71.53±12.27；年齡21.02±0.60），瞭解實驗流程後且填寫同意書後，每人都要實施A項（負重8kg）、B項（負重16kg）、C項（3500m低氧環境負重8kg）三種測試方式，在跑步機上執行2km/h、3km/h、4km/h（皆10%）、4km/h12.5%和4km/h15%的強度負荷、每一階速度實施5min，來觀察每組每階段心跳率（HR）、乳酸值（La）與運動自覺量表（RPE）之變化。資料處理以描述統計呈現基本資料與各檢測數據，以重複量數變異數分析來探討三組在各速度下檢測參數的差異，如有顯著再以LSD事後檢驗，研究顯著水準皆定為α=.05。結論：本研究獲悉HR、La和RPE此三種生理參數，會受到速度、坡度、自體負重與低氧的影響。若沒有低氧設備來做訓練，可運用傳統重量或加重負重來訓練。可供登山愛好者欲實施登山前之參考依據。

關鍵字

心跳率；有氧閾值；運動自覺量表；登山

並列摘要

Background: The difficulty of mountaineering is determined by the terrain, speed, load and altitude. It is necessary to find a good approach to enhance the self-training efficacy. Purpose: To investigate the effects of different loading weights and hypoxic chamber (at 3500 m) on the heart rate (HR), lactate (La), and Rating of Perceived Exertion (RPE) under various speed comparison with 10% 2-4km/h and 4km/h 12.5% and 4km/h 15.0% of the uphill slope. Method: 10 healthy male college students who are undergraduate without exercise habits were recruited (height 173.80 ± 0.42; weight 71.53 ± 12.27; age 21.02 ± 0.60). The inform consent were obtained from each volunteer. These 12 participants were divided into three groups, A, B and C by the counter balanced method. Each group have to perform 2km/h, 3km/h, 4km/h, 5km/h (all 10% uphill), 4km/h 12.5% and 4km/h 15% of the intensity load on the treadmill, each step of the speed implementation for 5min, different load weights (8kg, 16kg) and in 3500m hypoxic load height (8kg) were tested to observe the changes of HR, La and RPE in each group and each stage. The results presented the basic data and each test data in a descriptive statistical analysis. The repeated quantity variance analysis and a Scheffe post-test were applied to explore the difference between each group at each speed. The significance level of the study is set as α = .05. Conclusion: This study revealed that three physiological parameters, HR, La, and RPE, are affected by speed, slope, loading weight and hypoxia. If there is no hypoxic equipment for adaptation and training, traditional or higher weights can be used for training. It can be a practical training mode before mountaineering.

並列關鍵字

heart rate ； aerobic threshold ； Rating of perceived Exertion ； Mountaineering

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