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Journal of Research in Medical Sciences، جلد ۱۷، شماره ۱۲، صفحات ۰-۰
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عنوان انگلیسی Evaluation of wet bulb globe temperature index for estimation of heat strain in hot/humid conditions in the Persian Gulf
چکیده انگلیسی مقاله Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background: Heat exposure among construction workers in the Persian Gulf region is a serious hazard for health. The aim of this study was to evaluate the performance of wet bulb globe temperature (WBGT) Index for estimation of heat strain in hot/humid conditions by the use of Physiological Strain Index (PSI) as the gold standard. Materials and Methods: This cross-sectional study was carried out on 71 workers of two Petrochemical Companies in South of Iran in 2010 summer. The WBGT index, heart rate, and aural temperature were measured by Heat Stress Monitor (Casella Microtherm WBGT), Heart Rate Monitor (Polar RS100), and Personal Heat Strain Monitor (Questemp II), respectively. The obtained data were analyzed with descriptive statistics and Pearson correlation analysis. Results: The mean (SD) of WBGT values was 33.1 (2.7). The WBGT values exceed from ACGIH standard (30°C) in 96% work stations, whereas the PSI values were more than 5.0 (moderate strain) in 11% of workstations. The correlation between WBGT and PSI values was 0.61 ( P = 0.001). When WBGT values were less and more than 34°C, the mean of PSI was 2.6 (low strain) and 5.2 (moderate strain), respectively. Conclusion: In the Persian Gulf weather, especially hot and humid in the summer months , due to the WBGT values exceeding 30 °C ( in 96% of cases) and weak correlation between WBGT and PSI, the work/rest cycles of WBGT Index is not suitable for heat stress management. Therefore, in Persian Gulf weather , heat stress evaluation based on physiologic variables may have higher validity than WBGT index.
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نویسندگان مقاله حبیب اله دهقان | habibolah dehghan
department of occupational health engineering, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

سید b مرتضوی | seyed b mortazavi
department of occupational health engineering, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

محمد j جعفری | mohammad j jafari
department of occupational health engineering, shahid beheshti university of medical sciences, tehran, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (Shahid beheshti university of medical sciences)

محمد r مراثی | mohammad r maracy
environment research center, isfahan university of medical sciences, isfahan, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی اصفهان (Isfahan university of medical sciences)

نشانی اینترنتی http://jrms.mui.ac.ir/index.php/jrms/article/view/8829
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Articles
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