文章基本信息

标题：Validity of Infrared Tympanic Temperature for the Evaluation of Heat Strain While Wearing Impermeable Protective Clothing in Hot Environments
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作者：Joo-Young LEE ; Kouhei NAKAO ; Naoki TAKAHASHI 等
期刊名称：Industrial Health
印刷版ISSN：0019-8366
电子版ISSN：1880-8026
出版年度：2011
卷号：49
期号：6
页码：714-725
DOI：10.2486/indhealth.MS1291
出版社：National Institute of Occupational Safety and Health
摘要：The purpose of this study was to investigate the validity of infrared tympanic temperature (IR T_ty) as a thermal index to evaluate the heat strain of workers in hot environments, in comparison with rectal temperatures at various depths (T_{re-4, -8, and -16} for 4, 8 and 16 cm from the anal sphincter). Eight males underwent twelve experimental conditions: two activities (rest and exercise) × three clothing levels [Control, HDPE (high-density polyethylene coverall) and PVC (polyvinyl chloride coverall) condition] × two air temperatures (25 and 32℃ with 50%RH). The results showed that 1) in the conditions with most heat strain (HDPE or PVC condition at 32℃), IR T_ty was equal to or even higher than T_re; 2) during exercise, physiological strain index (PSI) using IR T_ty did not underestimate PSI-values using T_re-16, and overestimated those PSI-values from T_re-16 in HDPE and PVC conditions at 32℃; 3) during exercise, the relationships between IR T_ty and heart and total sweat rate were stronger than those between T_re-16 and heart and total sweat rate. These results indicated that IR T_ty is valid as a thermal index to evaluate the heat strain of workers wearing impermeable protective coveralls in hot environments. However, the application of IR T_ty is limited only for strenuous works wearing encapsulated personal protective clothing with a hood in heat.
关键词：Infrared tympanic temperature;Rectal temperature;Heat strain;Protective clothing;Exercise