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摄入碳水化合物减轻了人类在长期被动热应激期间复杂的认知功能和脑血流的减少
Nathan Deming1, Sarah Steer2, Jesse Hernandez2
1Human Performance Laboratory, Directorate of Athletics, USAF Academy, CO, 80840, USA; Human Cardiovascular Physiology Laboratory, Department of Health and Exercise Science, Colorado State University, Fort Collins, CO, 80521, USA.
Journal of thermal biology
|September 21, 2023
概括
在热应激期间摄入碳水化合物有助于通过增加向大脑输送葡萄糖来维持认知功能. 这项研究表明,摄入碳水化合物可以防止热引起的认知障碍.
科学领域:
- 生理学 生理学 生理学
- 神经科学是一个神经科学.
- 运动科学 运动科学 运动科学
背景情况:
- 被动热应激 (PHS) 可以损害认知功能.
- 摄入碳水化合物的作用在减轻热引起的认知衰退方面尚未完全理解.
研究的目的:
- 为了研究摄入碳水化合物是否会在长时间的被动热应激过程中减少认知功能障碍,与单独的电解质相比.
- 为了检查与热应激期间的碳水化合物消费相关的生理反应.
主要方法:
- 15名健康成年人在受控环境中接受了120分钟的被动热应激.
- 参与者在随机交叉设计中消耗了电解质 (E) 或电解质加碳水化合物 (E+C) 的液体.
- 在整个暴露于热量的过程中,评估了认知功能,生理应变和脑血流.
主要成果:
- 只有电解质的条件下认知功能受损,但当碳水化合物被消耗时保持.
- 摄入碳水化合物导致血葡萄糖水平升高,并增加内动脉血流.
- 心率和血压较低,而与碳水化合物消费相比,大脑葡萄糖的输送显著增加.
结论:
- 摄入碳水化合物似乎可以在长时间的被动热应激期间保护认知功能.
- 这种保护作用与大脑血液流动的增强和向大脑输送葡萄糖有关.
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