低体积和高体积的血液流量限制跑步机步行都能提高最大的有氧能力,无论血液体积如何
K M A Thompson1, A S D Gamble1, H Kontro2
1Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada.
Scandinavian journal of medicine & science in sports
|November 14, 2023
概括
血流限制 (BFR) 训练显著增加最大有氧容量 (VO2max),无论血红蛋白质量或血液体积的变化. 这种改善发生在BFR跑步机行走后与血液体积调节相关的荷尔蒙反应发生后.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 心血管适应 适应心血管
背景情况:
- 血流限制 (BFR) 训练是一种新的运动方式.
- 它对最大有氧容量 (VO2max) 和潜在的生理机制的影响需要进一步研究.
- 了解血红蛋白质量 (Hbmass) 和血液体积的适应性至关重要.
研究的目的:
- 评估低体积 (BFR_LV) 和高体积 (BFR_HV) BFR训练对VO2最大的影响.
- 为了确定VO2max的变化是否由Hb质量和血液体积的变化介导.
- 为了检查血液体积调节激素 (renin和copeptin) 的作用.
主要方法:
- 参与者接受了BFR训练 (LV:每周两次6周;HV:每天两次4周) 或作为对照 (CON).
- 测量包括Hbmass (CO-rebreathe),单腿和双腿VO2max,以及训练前和训练后的荷尔蒙反应 (renin,copeptin).
- 训练包括在跑步机上行走,使用特定的闭塞压力和间隔结构.
主要成果:
- 无论是BFR_LV还是BFR_HV组,VO2max都显著增加,在2至4周后就会有所改善.
- 单腿和双腿的VO2max相应地改善,这表明了中央和外围的适应.
- 在所有组中,Hb质量保持不变,尽管最初的宁和平素增加,但在BFR_HV组中减弱.
结论:
- 在BFR跑步机上行走有效地提高了VO2max.
- 这些改善发生在Hb质量或血液体积的显著变化之外.
- 该研究强调,BFR诱导的VO2最大增长不仅仅取决于血液形成或血体积膨胀.
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