血动力学和大脑氧化在急性运动中在中度的正常性缺氧和与年轻健康男性的同时认知任务时
Azzurra Doneddu1,2, Silvana Roberto1, Marco Guicciardi3
1Department of Medical Sciences and Public Health, University of Cagliari, Italy.
概括
在缺氧运动期间的精神压力显著影响大脑氧化和反应时间在健康的男性. 在缺氧状态下进行精神任务的炼会减少大脑的氧化,并减缓反应时间.
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.
- 心血管研究研究心血管研究
背景情况:
- 了解缺氧和精神压力对生理反应的综合影响至关重要.
- 之前的研究已经单独探索了这些因素,但它们在运动期间的相互作用需要进一步调查.
研究的目的:
- 为了研究心血管反应和大脑氧化 (Cox) 在运动期间在急性缺氧与同时精神压力.
- 为了确定精神任务对血液动力学,大脑氧化和在正常和缺氧运动期间的认知表现的影响.
主要方法:
- 15名健康的男性接受了心肺运动测试,以确定气体交换值 (GET) 的工作负载.
- 参与者在正常氧和急性低氧 (13.5% O2) 下以80%的GET进行了6分钟的自行车测试,最后3分钟进行了心理任务 (MT).
- 血液动力学通过阻抗心脏学测量;通过近红外光谱学监测大脑氧化和外周氧和.
主要成果:
- 在正常和缺氧条件下,精神任务增加了心率和心室填充率.
- 在缺氧运动期间,精神任务显著降低了大脑氧化 (Cox) 和增加反应时间 (RT).
- 认知任务正确性没有受到影响,但在缺氧下,性能 (RT) 受到损害.
结论:
- 同时的精神压力和轻度运动在正常和缺氧状态下都会诱导类似的血液动力学反应.
- 急性中度缺氧与精神压力相结合,导致大脑氧化率下降和年轻健康男性的反应时间受损.
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