Endurance training of respiratory muscles improves cycling performance in fit young cyclists.
Endurance training of respiratory muscles improves cycling performance in fit young cyclists.
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DOI：
10.1186/1472-6793-4-9
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发表时间：
2004-05-06
期刊：
影响因子：
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通讯作者：
Fregosi, Ralph F
中科院分区：
文献类型：
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作者：
Holm, Paige;Sattler, Angela;Fregosi, Ralph F
背景：呼吸肌的单独耐力训练是否能提高全身耐力运动能力仍存在争议，一些研究报告提高了50%或更多，而另一些研究报告没有变化。将20名Fit(最大摄氧量56.0ml/kg/min)经验丰富的自行车运动员随机分为3组。实验组(n=10)通过20分钟、45分钟的高呼吸训练训练呼吸肌。安慰剂组(n=4)进行“假”训练(20min，5min)，对照组(n=6)不进行训练。结果：训练后，实验组的呼吸肌耐力提高了12%。在持续约40分钟的自行车计时测试中，成绩提高了4.7%(10名受试者中有9名有所改善)。在安慰剂组和对照组中，无论是呼吸肌还是自行车运动耐力表现都没有经过重新测试的改善。训练后，在恒定的工作速率运动中，实验组的通气量和VO2显著增加，而二氧化碳分压明显降低；安慰剂组和对照组没有表现出这些变化。尽管训练后通气率较高，但感觉到的呼吸用力没有变化。结论：呼吸肌耐力训练提高了健康、有经验的自行车运动员的自行车运动成绩。呼吸用力感觉没有改变的相对过度换气表明，呼吸肌训练允许受试者耐受更高的运动呼吸反应，而不会出现更多的呼吸困难。这是否可以解释增强的性能还不得而知。
BACKGROUND: Whether or not isolated endurance training of the respiratory muscles improves whole-body endurance exercise performance is controversial, with some studies reporting enhancements of 50% or more, and others reporting no change. Twenty fit (VO2 max 56.0 ml/kg/min), experienced cyclists were randomly assigned to three groups. The experimental group (n = 10) trained their respiratory muscles via 20, 45 min sessions of hyperpnea. The placebo group (n = 4) underwent "sham" training (20, 5 min sessions), and the control group (n = 6) did no training.RESULTS: After training, the experimental group increased their respiratory muscle endurance capacity by 12%. Performance on a bicycle time trial test designed to last about 40 min improved by 4.7% (9 of 10 subjects showed improvement). There were no test-re-test improvements in either respiratory muscle or bicycle exercise endurance performance in the placebo group, nor in the control group. After training, the experimental group had significantly higher ventilatory output and VO2, and lower PCO2, during constant work-rate exercise; the placebo and control groups did not show these changes. The perceived respiratory effort was unchanged in spite of the higher ventilation rate after training.CONCLUSIONS: The results suggest that respiratory muscle endurance training improves cycling performance in fit, experienced cyclists. The relative hyperventilation with no change in respiratory effort sensations suggest that respiratory muscle training allows subjects to tolerate the higher exercise ventilatory response without more dyspnea. Whether or not this can explain the enhanced performance is unknown.