反复出现的短时间高氧症会改善急性低氧症患者的有氧性能的表现
Martin Faulhaber1,2, Sina Schneider1, Linda K Rausch1
1Department of Sport Science, Universität Innsbruck, Innsbruck, Austria.
Journal of strength and conditioning research
|September 20, 2023
概括
重复的短期高氧 (氧气丰富) 在强度炼期间显著提高有氧性能. 这种间歇性过氧策略改善了循环功率输出,降低了感知力.
科学领域:
- 运动科学 运动科学 运动科学
- 运动生理学 运动生理学
- 高空训练 高空训练
背景情况:
- 急性缺氧,模拟高海拔,损害有氧性能.
- 间歇性高氧症 (IH) 涉及短期,重复暴露于更高的氧度.
- 在低氧条件下提高运动表现的IH的有效性需要进一步研究.
研究的目的:
- 为了评估间歇性高氧症的重复短期发作对最大5分钟骑自行车性能的影响.
- 为了在急性缺氧期间比较间歇性高氧和安慰剂条件之间的性能结果.
- 评估IH干预期间的生理反应,包括血液乳酸和感知到的劳动力.
主要方法:
- 一个随机的,安慰剂控制的交叉试验,涉及17名健康个体.
- 最长5分钟的自行车时间试验是在normobaric缺氧 (模拟3200米) 下进行的.
- 间歇性高氧症涉及5个15秒周期的100%氧气在运动期间的吸入,与安慰剂 (低氧气) 相比.
主要成果:
- 时间试验期间的平均功率输出在间歇性高氧 (255.5W) 与安慰剂 (247.4W) 相比显著更高.
- 在间歇性高氧症下,血中乳酸度和感知劳力的评分显著下降.
- 在间歇性高氧应用期间,动脉氧和量大幅增加.
结论:
- 在低氧的高强度运动中,短暂的,反复出现的高氧症在增加功率输出方面是有效的.
- 间歇性高氧化可能是一个可行的策略,以提高在低氧环境中的有氧性能.
- 进一步的研究是有必要的,以探索剂量-反应效应和IH的潜在生理机制.
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