Development of biological monitoring methods of heat strain for preventing a heat stroke.

我们研究了一种生物学监测热应激反应的方法，以防止工人在炎热的环境中工作。我们选择一个音响频道来测量核心温度。“听觉运河被一个耳塞堵塞以减少外部气候影响。”在人工气候室内控制在25、30、35 ° C，湿度为60%，六名男性志愿者被要求在75 ° C的运动中进行三次重复20分钟，在自行车温度计上休息15分钟。试验室的温度是用耳插头型热传感器测量的。放射性温度在稳定的环境温度条件下具有一个相关性，与audititory canal温度有一个相关性。例如，环境温度变化到热或冷方向， auditory canal温度也变化到热或冷点依赖于环境温度。从25 ° C到35 ° C在环境条件下，在0.6 ° C中的低温温度和试验室温度的差异。然后，我们用微型热数据记录仪测量了实验室的温度。27名工作人员在四个车间用热传感器覆盖耳插头连接到微型数据记录仪，在炎热的环境中工作。我们还通过视觉模拟量表（VAS）对工作前和工作后的工作人员进行了热感应和张力的询问。auditory canal温度的峰值和平均值与热感和张力VAS值的总和有关。We think that the peak value of the auditory canal temperature shows the exposure limit of heat strain and the mean value of the auditory canal temperature shows the exposure dose of the heat strain。这是有可能的，因为音响公司运河温度的峰值和平均值可能是预防热浪的有效指标。

We investigate the biological monitoring methods of heat strain for preventing a heat stroke among workers working in the hot environment. We choose an auditory canal to measure a core temperature. The auditory canal was insulated with an ear plug to reduce external climate effects. In the artificial climate chamber controlled at 25, 30, 35゜C and humidity 60%, six male volunteers were asked to perform three repeats of 20 min of 75 W exercise and 15 min rest on the bicycle ergometer. Auditory canal temperature was measured using an ear plug type thermo-sensor. Rectal temperature had a correlation with auditory canal temperature under stable environmental temperature condition. However, environmental temperature changes to hot or cold direction, auditory canal temperature also changes to hot or cold point depending on the environmental temperature. From 25゜C to 35゜C in environmental condition, the difference of rectal temperature and auditory canal temperature was within 0.6゜C. Then we measured the auditory canal temperature among workers using a mini thermo data logger. Twenty-seven workers in the four workshops wore the ear plug with thermo sensor connected to the mini data logger, worked in the hot environment. We also asked the questionnaire to the workers about heat sensation and tiredness by visual analog scale (VAS) before and after the job. Peak and mean value of the auditory canal temperature had correlation with sum of the heat sensation and tiredness VAS value. We think that the peak value of the auditory canal temperature shows the exposure limit of heat strain and the mean value of the auditory canal temperature shows the exposure dose of the heat strain. It is possible that the peak and mean value of the auditory canal temperature might be the effective indexes for preventing a heat stroke.