短期补充可可生物黄醇并不能改善年轻健康成年人的感冒引起的血管扩张
Billie K Alba1, Andrew M Greenfield2,3, Beau R Yurkevicius2
1Thermal and Mountain Medicine Division, US Army Research Institute of Environmental Medicine, 10 General Greene Ave., Bldg. 42, Natick, MA, 01760, USA. billie.k.alba.civ@health.mil.
European journal of applied physiology
|December 27, 2023
概括
可可黄补充剂没有改善手指冷感引起的血管扩张 (CIVD). 这项研究发现,在黄醇摄入后冷水浸泡期间,血液流量或皮肤温度没有显著变化.
科学领域:
- 身体生理学 身体生理学
- 营养科学 营养科学
- 心血管研究研究心血管研究
背景情况:
- 感冒引起的血管扩张 (CIVD) 是肢体对寒冷暴露的生理反应.
- 饮食中的黄醇可能通过增加氧化物,一种血管扩张剂来影响CIVD.
- 之前的研究还没有研究在寒冷压力期间对极端 perfusion 的flavanol 影响.
研究的目的:
- 调查是否急性和8天可可黄醇补充剂会增加CIVD.
- 为了测试这种假设,即黄醇可以在冷水浸泡 (CWI) 过程中增强血液流动.
主要方法:
- 这是一项双盲,随机,交叉研究,对11名健康成年人进行.
- 参与者每天摄入900毫克可可黄醇或安慰剂,持续8天.
- 通过将手指浸入冷水 (4°C) 并测量皮肤温度来评估CIVD.
主要成果:
- 补充flavanol并没有改变手指中的CIVD频率或振幅.
- 在弗拉瓦诺和安慰剂组之间没有观察到指甲皮肤温度 (平均值,最低点,顶点) 的显著差异.
- 指甲床的CIVD参数也没有受到flavanol摄入的影响.
结论:
- 摄入可可黄似乎没有改变手指CIVD.
- 饮食中的黄醇可能不是一种有效的策略,可以在极端暴露于寒冷时增强血液流动.
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