a Department of Sports Medicine , Kyung Hee University , Yongin-si , South Korea.
b Centers for Disease Control and Prevention , National Institute for Occupational Safety and Health, National Personal Protective Technology Laboratory , Pittsburgh , PA , USA.
Int J Hyperthermia. 2019;36(1):654-659. doi: 10.1080/02656736.2019.1627430.
Increased facial warmth sensations could lead to thermal discomfort, and different facial regions may demonstrate concurrent temperature differences. The study aim was examining facial warmth sensitivity differences by facial region under differing environmental conditions. Twelve men had heat flux measurements of six facial regions during 30 min each of rest in thermoneutral conditions (25 °C, 30% relative humidity (RH)), rest in warm conditions (40 °C, 30% RH), and cycling at 400 W of metabolic heat production (40 °C, 30% RH). The forehead demonstrated highest temperatures at termination of all study conditions; lowest temperatures were noted for the nose under thermoneutral conditions and chin during warmth and exercise conditions. Five of six facial regions demonstrated significant differences in warmth sensitivity, decreasing to two of six regions during warm conditions and one of six regions during exercise, with the upper lip most sensitive in all conditions. Body thermal comfort (TC) perceptions, regressed individually on mean facial temperature () vs. core temperature (), indicated that was significantly more related than to perceived TC ( = .001). Perceived TC, regressed individually on perceived overall body thermal sensation (TS) vs. facial TS, demonstrated that was significantly more related to perceived TC ( = .004). There were regional differences in facial warmth sensitivity together with different facial temperatures moving toward equilibration when the body is subjected to heat-producing activities. Perceptions of TC were more strongly related to than to or overall body TS.
面部温度升高可能会导致热不适，不同的面部区域可能表现出同时存在的温度差异。本研究旨在探讨不同环境条件下不同面部区域的面部温暖敏感性差异。12 名男性在热中性条件（25°C，30%相对湿度（RH））、温暖条件（40°C，30%RH）和 400W 代谢热产生下（40°C，30%RH）各休息 30 分钟时，对六个面部区域的热通量进行了测量。在所有研究条件结束时，额部的温度最高；在热中性条件下，鼻部的温度最低，在温暖和运动条件下，颏部的温度最低。六个面部区域中的五个区域的温暖敏感性存在显著差异，在温暖条件下减少到六个区域中的两个，在运动条件下减少到六个区域中的一个，所有条件下上唇最敏感。个体回归身体热舒适（TC）感知与平均面部温度（）与核心温度（）的关系表明，比更显著相关（ = .001）。个体回归感知总体身体热感觉（TS）与面部 TS 的感知 TC 表明，比更显著相关（ = .004）。当身体受到产热活动的影响时，面部温暖敏感性存在区域差异，同时面部温度趋于平衡。TC 的感知与比与整体身体 TS 更密切相关。
