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Journal of Research in Health Sciences، جلد ۱۶، شماره ۲، صفحات ۹۰-۰
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
Validating the Heat Stress Indices for Using In Heavy Work Activities in Hot and Dry Climates |
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| چکیده انگلیسی مقاله |
Background : Necessity of evaluating heat stress in the workplace, require validation of indices and selection optimal index. The present study aimed to assess the precision and validity of some heat stress indices and select the optimum index for using in heavy work activities in hot and dry climates. Methods: It carried out on 184 workers from 40 brick kilns workshops in the city of Qom, central Iran (as representative hot and dry climates). After reviewing the working process and evaluation the activity of workers and the type of work, environmental and physiological parameters according to standards recommended by International Organization for Standardization (ISO) including ISO 7243 and ISO 9886 were measured and indices were calculated. Results : Workers engaged in indoor kiln experienced the highest values of natural wet temperature, dry temperature, globe temperature and relative humidity among studied sections ( P < 0.05). Indoor workplaces had the higher levels of all environmental parameters than outdoors ( P =0.0001 ) , except for air velocity. The wet-bulb globe temperature (WBGT) and heat stress index (HSI) indices had the highest correlation with other physiological parameters among the other heat stress indices. Relationship between WBGT index and carotid artery temperature (r=0.49), skin temperature (r=0.319), and oral temperature (r=0.203) was statistically significant ( P =0.006). Conclusions : Since WBGT index, as the most applicable index for evaluating heat stress in workplaces is approved by ISO, and due to the positive features of WBGT such as ease of measurement and calculation, and with respect to some limitation in application of HSI; WBGT can be introduced as the most valid empirical index of heat stress in the brick workshops. |
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| نویسندگان مقاله |
روح اله حاجی زاده | roohalah hajizadeh
فریده گلبابایی | farideh golbabaei
سمیه فرهنگ دهقان | somayeh farhang dehghan
محمد حسین بهشتی | mohammad hossein beheshti
سید محمد جعفری | sayed mohammad jafari
فرشته طاهری | fereshteh taheri
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| نشانی اینترنتی |
http://journals.umsha.ac.ir/index.php/JRHS/article/view/2463 |
| فایل مقاله |
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| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
Original Articles |
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