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首页> 外文会议>Thermal Protection of Man Under Hot and Hazardous Conditions Conference >VASOMOTOR RESPONSES (BY LASER DOPPLER TECHNIQUE) ASSOCIATED WITH RESPIRATORY TRACT AND/OR HEAD SKIN COOLING IN HUMAN UNDER HEAT STRESS
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VASOMOTOR RESPONSES (BY LASER DOPPLER TECHNIQUE) ASSOCIATED WITH RESPIRATORY TRACT AND/OR HEAD SKIN COOLING IN HUMAN UNDER HEAT STRESS

机译：血管振动仪响应（通过激光多普勒技术）与热应激下人体中的呼吸道和/或头皮冷却相关

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It is well known that the vasomotricity responses (as well as sweating) are under the influence of a central mechanism. Vasodilatation is observed when body temperature increases while vasoconstriction is relative to body temperature-drop. In addition, whereas skin blood flow reduction is well known to be a constrictive active phenomenon, skin blood flow rise may be the reflect of either release of vasoconstriction or activation of a vasodilatator command, although many contradictory conclusions exist on this latter point. It has also been argued that the skin blood variations may depend on the area where the measures are carried out. Many studies have shown the beneficial influence of head cooling (6) on general body cooling, but again contradictory findings were published. The aim of the present study was to investigate the effects of head cooling, by different means, on the various local skin temperatures and on the skin blood flows of the areas which were or not cooled. For this purpose, human subjects were exposed, while resting or exercising, to heat exposures during which either the respiratory tract or the head skin or both were cooled down: core and skin temperatures as well as skin blood flows of the temple (cooled) and the forearm (not cooled) were compared.
机译：众所周知，血管紊乱响应（以及出汗）在中央机制的影响下。当体温增加时，血管收缩相对于体温下降时，观察到血管扩张。此外，虽然皮肤血流是众所周知的，但是皮肤血流升高可能是血管收缩或激活血管扩张剂命令的释放的反射，尽管在后一点上存在许多矛盾的结论。还有人认为，皮肤血液变化可能取决于进行措施的区域。许多研究表明，头部冷却（6）对一般身体冷却的有益影响，但再次出版了矛盾的结果。本研究的目的是通过不同方式研究头部冷却的影响，在各种局部皮肤温度和未冷却区域的皮肤血流上。为此目的，在休息或锻炼的同时暴露人类受试者，以在呼吸道或头部皮肤或两者都冷却下来的热暴露：核心和皮肤温度以及寺庙的皮肤血液（冷却）和比较前臂（未冷却）。

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