运动后的神经可塑性通过在低工作率手臂循环过程中增加血流限制来增强
Mikaela L Frechette1, Summer B Cook1, Brendan R Scott2,3
1Department of Kinesiology, University of New Hampshire, Durham, New Hampshire, USA.
Experimental physiology
|January 21, 2025
概括
与低强度运动相结合的血流限制 (BFR) 增强了皮质脊髓刺激能力,比单独的低强度运动更长时间. 这项研究研究了神经机制,发现BFR改善了运动适应能力.
科学领域:
- 运动生理学 运动生理学
- 神经科学是一个神经科学.
- 运动医学 运动医学
背景情况:
- 众所周知,血液流量限制 (BFR) 与低工作率运动相结合可以提高肌肉和心血管健康.
- 调解这些健身增强的潜在神经机制在很大程度上仍未被探索.
研究的目的:
- 为了研究手臂自行车运动与或没有血流限制 (BFR) 对神经适应的影响.
- 具体来说,要检查皮质脊髓刺激性和运动皮质抑制的变化.
主要方法:
- 十二名健康的男性进行了四个随机的15分钟的手臂自行车条件:高工作率 (HW),低工作率 (LW),低工作率与BFR (LW-BFR) 和仅BFR.
- 经磁刺激 (TMS) 评估了运动唤起潜能 (MEP) 幅度和皮质静止期 (cSP) 在运动前后的双臂.
主要成果:
- 高工作率 (HW) 和低工作率与BFR (LW-BFR) 运动都导致皮层脊髓刺激能力明显长时间增加,而仅仅是低工作率 (LW) 运动.
- 对于HW和LW-BFR条件,MEP振幅从基线显著增加到运动后的10分钟和15分钟.
- 单独的LW运动仅在运动后10分钟内就显示出显著的增加.
结论:
- 带有BFR的高工作速率手臂循环和低工作速率运动比没有BFR的低工作速率运动更持续地增加皮质脊髓刺激能力.
- 这些发现表明,BFR可能会在运动期间增强神经适应,从而有助于改善身体健康.
- 需要进一步的研究来将这些神经变化与肌肉力量的增加联系起来,并指导临床BFR应用.
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