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

开发热应变生物监测方法以预防中暑。

基本信息

批准号：
15590567
负责人：
TSUTSUI Takao
金额：
$ 1.54万
依托单位：
University of Occupational and Environmental Health
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2004
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15590567/
关键词：
auditory canal temperature core temperature heat stroke heat strain monitoring system thermal stress ear canal temperature aural canal temperature 労働連続測定

项目摘要

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.

探讨高温作业工人热应激的生物学监测方法，以预防中暑。我们选择一个耳道来测量核心温度。耳道用耳塞隔离，以减少外部气候影响。在25、30、35 ℃和湿度60%的人工气候室内，6名男性志愿者被要求在自行车功率计上进行20 min的75 W运动和15 min的休息。使用耳塞式温度传感器测量耳道温度。在环境温度稳定的条件下，直肠温度与耳道温度有相关性。然而，环境温度向热或冷方向变化，耳道温度也根据环境温度向热点或冷点变化。在25 ℃ ~ 35 ℃的环境条件下，直肠温度与耳道温度之差在0.6 ℃以内。然后，我们测量了工人的耳道温度使用一个小型热数据记录仪。四个车间的27名工人戴着耳塞，耳塞上的温度传感器连接到微型数据记录仪上，在炎热的环境中工作。采用视觉模拟评分法（VAS）对作业前后工人的热感觉和疲劳程度进行问卷调查。耳道温度峰值和平均值与热感觉和疲劳VAS值之和相关。我们认为耳道温度的峰值反映了热应变的暴露极限，耳道温度的平均值反映了热应变的暴露剂量。耳道温度的峰值和平均值可能是预防中暑的有效指标。