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Comparing the Heat Stress (DI, WBGT, SW) Indices and the Men Physiological Parameters in Hot and Humid Environment

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Author(s): Farideh Golbabaie | Mohammad Reza Monazam Esmaieli | Rasoul Hemmatjou | Parvin nasiri | Gholam Reza Pour Yaaghoub | Mostafa Hosseini

Journal: Iranian Journal of Health and Environment
ISSN 2008-2029

Volume: 5;
Issue: 2;
Start page: 245;
Date: 2012;
Original page

Keywords: WBGT | Heat stress index | Physiological parameters

ABSTRACT
Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 Background and Objectives: Heat stress is considered as a serious threat to the health and safety of workers in many industries, including petrochemical and steel. Assessment of the heat stress is important from the disease prevention point of view and also for the safety and performance of workers at workplace. Although there are many indices to evaluate the heat stress, it is hard to select an applicable index for a wide range of weather conditions. The purpose of the study was to develop an optimal index based on physiological parameters in a petrochemical industry.  Materials and Methods: The study was conducted in a petrochemical industry located in Assaluyeh (south of Iran). Twenty one healthy young men at different levels of fitness and heat acclimation volunteered to participate in the study. Physiological parameters including heart rate, systolic and diastolic blood pressure, skin temperature and oral temperature were measured during the working day over two consecutive weeks. Simultaneously, we measured the climatic parameters required to calculate the wet bulb globe temperature (WBGT), required sweat rate (SWreq), and the discomfort index (DI) indices. Results: All the measurements took place on 2 sites: Kar (working place) and Paziresh (resting room). Our results showed  that the mean values of indices and physiological parameters   in Kar    for both acclimated and unacclimated groups were significantly higher than Paziresh (P
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