休息期间进行重复冲刺运动并结合血流限制对肌肉氧合的急性影响。
Acute Effect of Repeated Sprint Exercise With Blood Flow Restriction During Rest Periods on Muscle Oxygenation.
作者信息
Kojima Chihiro, Yamaguchi Keiichi, Ito Hiroto, Kasai Nobukazu, Girard Olivier, Goto Kazushige
机构信息
Japan Institute of Sports Sciences, Tokyo, Japan.
Graduate School of Sport and Health Science, Ritsumeikan University, Shiga, Japan.
出版信息
Front Physiol. 2021 Jul 29;12:665383. doi: 10.3389/fphys.2021.665383. eCollection 2021.
PURPOSE
This study aimed to examine the effect of applying BFR during rest periods of repeated cycling sprints on muscle oxygenation.
METHODS
Seven active males performed 5 × 10-s maximal pedaling efforts with 40-s passive rest, with or without BFR application during rest period. BFR was applied for 30 s between sprints (between 5 and 35 s into rest) through a pneumatic pressure cuff inflated at 140 mmHg. muscle oxygenation was monitored using near-infrared spectroscopy. In addition, blood lactate concentration and heart rate were also evaluated.
RESULTS
The BFR trial showed significantly lower oxyhemoglobin (oxy-Hb) and tissue saturation (StO) levels than the CON trial ( < 0.05). However, power output and blood lactate concentration did not significantly differ between the two trials ( > 0.05).
CONCLUSION
Applying BFR during rest periods of repeated cycling sprints decreased muscle oxygenation of active musculature, without interfering with power output during sprints.
目的
本研究旨在探讨在重复自行车冲刺间歇期应用血流限制（BFR）对肌肉氧合的影响。
方法
七名活跃男性进行5组每组10秒的最大蹬踏运动，每组之间有40秒的被动休息期，休息期有无应用BFR。在冲刺之间（休息期的5至35秒）通过充气至140 mmHg的气压袖带施加BFR 30秒。使用近红外光谱监测肌肉氧合。此外，还评估了血乳酸浓度和心率。
结果
与对照组相比，BFR试验显示氧合血红蛋白（oxy-Hb）和组织饱和度（StO）水平显著降低（<0.05）。然而，两组试验之间的功率输出和血乳酸浓度无显著差异（>0.05）。
结论
在重复自行车冲刺间歇期应用BFR可降低活跃肌肉组织的肌肉氧合，且不影响冲刺期间的功率输出。
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