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Document ID (ISN)102583
CIS number 03-1862
ISSN - Serial title 1351-0711 - Occupational and Environmental Medicine
Year 2003
Convention or series no.
Author(s) Brake D.J., Bates G.P.
Title Fluid losses and hydration status of industrial workers under thermal stress working extended shifts
Bibliographic information Feb. 2003, Vol.60, No.2, p.90-96. Illus. 44 ref.
Abstract This study examined the fluid consumption, sweat rates and changes in the hydration state of 39 male underground miners in northern Australia on extended shifts under significant levels of thermal stress (WGBT>28░C). Urinary specific gravity was measured before, during and at the completion of the working shift. Environmental conditions were measured hourly during the shift. Fluid replacement was measured during the working periods and during the meal breaks. It was found that dehydration did not occur in well-informed workers. Fluid replacement during meal breaks was not significantly increased above fluid replacement rates during work time. Urinary specific gravity was found to be a good indication of hydration status and a practical method for improving workforce awareness and understanding of this important risk factor.
Descriptors (primary) shift work; hot workplaces; underground mining; dehydration
Descriptors (secondary) Australia; sweat rate; gravimetric determination; WBGT index; urine monitoring; drinks at work
Document type D - Periodical articles
Country / State or ProvinceAustralia
Subject(s) Heating, ventilation and climate
Broad subject area(s) Physical hazards
Browse category(ies) Heat and cold