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Assessment of construction workers' hydration status using urine specific gravity
Authors
M. Eyvazlou
A.A. Farshad
+4 more
R. Mirkazemi
M.R. Monazzam
S. Montazer
A.A.S. Yaraghi
Publication date
1 January 2013
Publisher
'Nofer Institute of Occupational Medicine'
Doi
Cite
Abstract
Objectives: The study objective was to assess hydration status by measuring USG among construction workers in Iran. Materials and Methods: The study design was comparative and experimental. Sixty participants were randomly selected from the construction workers from a construction campus with a similar type of work, climate and diet and formed 2 groups (individuals exposed to the sun and non-exposed individuals). TWL and USG were measured in both groups on 2 consequent days, at the beginning, mid and end of the work shift. Results: USG test showed that mean USG was 1.0213±0.0054 in the control group and in the exposed group, where it was significantly higher, it amounted to 1.026±0.005. In the exposed group, 38 of workers had a USG level between 1.026-1.030, representing a higher risk of heat illness and impaired performance and 12.72 had a USG level above 1.030 representing a clinically dehydrated status, while this proportion in the control group was 15.2 and 0.58, respectively. The mean TWL index measure was 215.8±5.2 W/m2 for the control group and 144±9.8 W/m2 for the exposed group, where, again, it was significantly higher. The Pearson correlation measure showed a significant correlation between USG and TWL. Conclusions: Strong correlation between TWL, as an indicator of thermal stress and USG shows that USG can be considered as a predictor of thermal stress. The difference between USG among the exposed and non-exposed workers and the increase in USG during midday work show the sensitivity of this measure in different thermal and climatic conditions, whereas, the high level of dehydration among workers despite acceptable TWL level, shows that heat stress management without considering the real hydration status of workers, is insufficient. © 2013 Versita Warsaw and Springer-Verlag Wien
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eprints Iran University of Medical Sciences
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oai:eprints.iums.ac.ir:9804
Last time updated on 10/10/2019
Biblioteka Nauki - repozytorium artykuÅów
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oai:bibliotekanauki.pl:2179079
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Last time updated on 14/10/2017