当人初次曝露于高温时,身体机能出现一系列的变化,如呼吸加快,心率加速,外周血管显著扩张;主观感到不舒适,工作能力降低,且容易发生中暑及热衰竭。但经过连续几天曝露后,不舒适的感觉逐渐消失,工作能力出现显著的改善;中暑及热衰竭的发生率大大降低;呼吸及心跳频率较初入高温时降低。同时身体其他机能也变化到了一个新的水平,因而能较好的维持机体与环境的就一。这种现象称为高温适应。高温适应的产生与消失当曝露于高温下的第一天,就可开始产生适应,到第三第四天时可得到较好的适应。但若要在一星期内得到完全的适应,便需在高温下进行劳动。至于劳动的强度宜逐日增加,若开始即进行重的劳动,则工作能力会急剧下降,而且也会影响适应的产生。若不进行 When people first exposed to high temperatures, the body functions a series of changes, such as rapid breathing, accelerated heart rate, peripheral blood vessels significantly expanded; subjective feeling uncomfortable, reduced work ability, and prone to heat stroke and heat failure. However, after several days of exposure, the feeling of discomfort gradually disappeared and the working ability remarkably improved. The incidence of heat stroke and heat exhaustion was greatly reduced. The frequency of respiration and heartbeat was lower than that at the beginning of high temperature. At the same time, other functions of the body have also changed to a new level, which can better maintain the body and the environment. This phenomenon is called high temperature adaptation. Emergence and Disappearance of Hypothermia Adaptation begins on the first day of exposure to high temperatures and is well adapted to the third fourth day. However, if it is to be fully adapted within a week, it will be necessary to work at high temperatures. As for the intensity of labor, which should increase day by day, if heavy labor starts, the ability to work will drop drastically, and it will also affect the production of adaptation. If not carried out