持续和间歇性血流限制对冲刺间隔表现和肌肉氧气反应的急性影响
Aaron M Wizenberg1, David Gonzalez-Rojas1, Paola M Rivera1
1Exercise Physiology Intervention and Collaboration Laboratory, School of Kinesiology and Physical Therapy, Division of Kinesiology, University of Central Florida, Orlando, Florida.
在冲刺间隔训练 (SIT) 期间持续和间歇性血流限制 (BFR) 损害了冲刺表现,比没有BFR. 持续BFR显示,总体工作减少更大,肌肉代谢物积累增加.
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
- 肌肉生理学 肌肉生理学
背景情况:
- 血液流量限制 (BFR) 用于增强训练适应性.
- 冲刺间隔训练 (SIT) 是改善身体健康的有效方法.
- 在SIT期间不同BFR协议的急性影响尚未完全理解.
研究的目的:
- 调查SIT期间持续 (CBFR) 和间歇 (IBFR) 血流限制对冲刺表现和肌肉氧化的急性影响.
- 为了比较CBFR和IBFR对峰值功率,总工作和重复冲刺期间感知力的影响.
- 评估SIT期间在不同的BFR条件下肌肉氧化反应和潜在的代谢物积累.
主要方法:
- 15名男性完成了三次随机的SIT会议:CBFR,IBFR (在休息期间应用) 和无血流限制 (NoBFR).
- 每场比赛包括两次30秒的全力冲刺,休息2分钟.
- 测量包括峰值功率,总工作,冲刺减速,感知劳动力评级和肌肉氧化 (使用近红外光谱学).
主要成果:
- 与NoBFR相比,CBFR和IBFR的峰值功率从冲刺1到冲刺2下降了更多.
- 与IBFR和NoBFR相比,CBFR的总工作在两次冲刺中都较低.
- 脱氧血红蛋白和总血红蛋白的增加在CBFR中最大,这表明代谢物积累更大.
结论:
- 与没有BFR相比,在SIT期间应用BFR会导致峰值功率和总工作的减少.
- 连续的BFR似乎会在重复的冲刺中诱导更大的工作减少和潜在的更高的肌肉代谢物积累.
- 这些发现表明,在高强度间歇运动期间BFR的应用和模式需要仔细考虑.
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