在闭眼评估平衡期间,在冷水浸泡后,前额叶皮层的血液动力学反应
Cory Smith1, Owen Salmon2, Matt Segovia2
1Baylor University, Waco, TX, USA. Cory_M_Smith@Baylor.edu.
European journal of applied physiology
|October 23, 2025
概括
冷水浸泡 (CWI) 在平衡任务期间影响前额叶皮层 (PFC) 血液动力学,显示神经需求增加. 这表明,在CWI之后,姿势控制和温度调节的认知机制发生了变化.
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:
- 姿势控制依赖于复杂的感官和认知整合.
- 前额叶皮层 (PFC) 的激活与平衡期间的认知需求有关.
- 冷水浸泡 (CWI) 引起显著的生理反应,包括温度调节.
研究的目的:
- 调查CWI对平衡表现的影响.
- 在CWI后的平衡任务中评估PFC的血液动力学变化.
- 了解寒冷暴露后体位控制背后的认知机制.
主要方法:
- 23名参与者接受了10分钟的冷水浸泡 (CWI) 在15°C和热中性水浸泡 (TWI) 在35°C.
- 沉浸前和后进行了闭眼平衡评估 (路径长度,摇摆范围,摇摆速度).
- 功能近红外谱学 (fNIRS) 在平衡试验中测量了PFC中的氧化血红蛋白 (O2Hb) 和脱氧化血红蛋白 (HHb).
主要成果:
- 在CWI和TWI之间,在平衡指标 (路径长度,摇摆范围,摇摆速度) 中没有发现显著差异.
- 在平衡评估期间,TWI没有改变PFC血液动力学 (O2Hb,HHb).
- 在浸泡后的PFC中,CWI显著降低了O2Hb (p ≤ 0.01) 和增加了HHb (p ≤ 0.01).
结论:
- CWI诱导了明显的脑血液动力学模式,可能表明神经对温度调节和平衡的需求增加.
- 观察到的O2Hb和HHb的变化表明在CWI后的回暖过程中存在竞争的温度调节过程.
- 这些发现突出了与CWI相关的独特的认知-血液动力学反应及其对姿势控制的影响.
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