在手的连续浸泡过程中,冷气诱导的血管扩张
Rebecca S Weller1,2,3, Hein A Daanen4, Rebecca J McClintock5,6
1Naval Health Research Center, 140 Sylvester Rd, San Diego, CA, USA. rebecca.s.weller.ctr@health.mil.
European journal of applied physiology
|October 20, 2023
概括
在寒冷的环境中多次脱和戴手套并不会影响身体的冷气诱导血管扩张 (CIVD) 反应或恢复. 这一发现对于在寒冷条件下工作的人来说至关重要,确保一致的手部温度调节.
科学领域:
- 生理学 生理学 生理学
- 环境医学 环境医学
- 人类表现的人类表现.
背景情况:
- 在寒冷的环境中重复使用手套会导致手冷却和回暖的循环.
- 了解重复暴露于寒冷对手部温度调节的生理影响,对于职业安全和绩效至关重要.
研究的目的:
- 调查一天内反复冷却手对冷气诱导血管扩张 (CIVD) 的影响.
- 评估重复暴露于寒冷对同情激活和手指/手部温度恢复的影响.
- 为了确定连续的寒冷暴露是否会损害对寒冷的生理反应.
主要方法:
- 十名参与者 (8名男性,2名女性) 在冷水 (4.3°C) 中进行了两次30分钟的双手浸泡,浸泡之间有10分钟的恢复期.
- 寒冷诱导血管扩张 (CIVD) 的组成部分,包括发病时间和最低/中指温度,被测量到每个手指 (食指,中指,戒指).
- 在整个浸泡和恢复阶段监测手指和手部温度,以评估恢复率.
主要成果:
- 在第一次和第二次冷沉浸之间,在CIVD发病时间,最低手指温度或平均手指温度方面没有发现显著差异.
- 手指温度恢复率在两个连续浸泡之间显示了类似的模式.
- 同情激活水平没有明确详细说明,但整体CIVD反应保持一致.
结论:
- 在同一天内重复冷却手并不会对感冒诱导血管扩张 (CIVD) 反应或随后的温度恢复产生负面影响.
- 这些发现表明,尽管先前接触过冷刺激,但对冷刺激的反应生理能力仍然完好无损.
- 对于经常将手暴露在寒冷条件下的人来说,结果是有希望的,这表明热调节功能的弹性.
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