冲刺间隔训练和血流限制对神经肌肉和肌肉功能的急性影响
David H Gonzalez Rojas1, Aaron M Wizenberg1, Paola M Rivera1
1University of Central Florida, Orlando, FL, USA.
Journal of musculoskeletal & neuronal interactions
|March 1, 2024
概括
在冲刺间隔训练 (SIT) 中应用的血流限制 (BFR) 并没有显著改变神经肌肉疲劳或冲刺表现. 这些发现表明,BFR在高强度间歇运动期间不会增强或阻碍神经肌肉功能.
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
- 神经肌肉适应的过程
背景情况:
- 冲刺间隔训练 (SIT) 是提高运动表现的强有力的刺激.
- 血液流量限制 (BFR) 越来越多地用于增强训练适应性.
- 关于BFR和SIT对神经肌肉功能和表现的综合影响仍在研究中.
研究的目的:
- 调查BFR与SIT结合对冲刺表现的影响.
- 评估SIT期间BFR对神经肌肉疲劳和肌肉厚度的影响.
- 在SIT期间比较连续 (CBFR) 和间歇 (IBFR) BFR的结果.
主要方法:
- 15名男性参与者完成了随机的SIT协议,其中包括CBFR,IBFR和没有BFR (无BFR).
- 训练包括在一个循环人体计上进行两次30秒的最大冲刺,其体积阻力为7.5%.
- 神经肌肉评估包括同心的峰值扭矩 (CPT),最大自发同度收缩 (MVIC) 扭矩,肌肉厚度 (MT) 和表面电肌图 (sEMG).
主要成果:
- 在所有条件下,CPT和MVIC扭矩在SIT后显著下降,这表明神经肌肉疲劳.
- 肌肉厚度 (MT) 在SIT前后增加.
- sEMG平均功率频率下降,PWCFT%在No-BFR中比CBFR更高,表明类似的神经肌肉疲劳.
结论:
- 有或没有BFR的SIT诱导了类似的神经肌肉疲劳和冲刺表现结果.
- 与单独SIT相比,CBFR和IBFR都没有显著改变神经肌肉功能.
- 当与SIT结合时,BFR似乎不会为神经肌肉适应或性能提供额外的好处.
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