与运动相关的脑震荡会在受控呼吸过程中改变大脑的血液动力活动
Cody A Ellingson1, Jyotpal Singh1, Chase J Ellingson2
1Faculty of Kinesiology & Health Studies, University of Regina, Regina, Saskatchewan, Canada.
Journal of neurophysiology
|February 7, 2024
概括
运动相关脑震荡 (SRC) 减少了呼吸系统对大脑血流的影响. 近红外光谱检测显示,在脑震荡后控制呼吸期间,前额叶皮层的氧化减少,这表明有保护作用.
科学领域:
- 神经科学是一个神经科学.
- 运动医学 运动医学
- 心血管生理学心血管生理学
背景情况:
- 众所周知,与运动有关的脑震荡 (SRC) 会破坏神经血液动力活动,心脏功能和血压 (BP) 自律.
- 了解SRC后的脑血管和心血管反应对于恢复和管理至关重要.
研究的目的:
- 为了研究在经历SRC后控制呼吸期间大脑血管和心血管反应的变化.
- 评估SRC对前额叶皮层氧化的影响及其与控制呼吸期间血压的关系.
主要方法:
- 大学队的运动员 (n=81) 在SRC5天内接受季前生理评估和随访.
- 记录了连续的节拍对节拍血压 (手指光电脉冲扫描) 和右前额叶皮层氧化 (近红外光谱 - NIRS).
- 参与者进行了5分钟的坐着休息和5分钟的控制呼吸 (0.10赫兹). 波形变换分析了NIRS和BP信号的呼吸和心脏频率间隔.
主要成果:
- 氧化血红蛋白 (HbO2) 和血红蛋白差异 (HbD) 幅度在呼吸频率 (0.10-0.6 Hz) 从季前到急性SRC显著下降.
- 这些变化在具有可用的NIRS和BP信号 (n=28) 的参与者中被注意到.
- 建议在SRC后减少呼吸系统对大脑血液动力学活动的贡献.
结论:
- 在急性SRC之后,呼吸对大脑血液动力学活动的贡献减少.
- 这些发现表明,潜在的保护机制改变了脑震荡后的大脑血流调节.
- 控制呼吸协议与NIRS相结合,为SRC后的神经血管恢复提供了洞察力.
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