@article{ref1,
title="Deep body core temperatures in industrial workers under thermal stress",
journal="Journal of Occupational and Environmental Medicine",
year="2002",
author="Brake, Derrick John and Bates, Graham Peter",
volume="44",
number="2",
pages="125-135",
abstract="To date, no field study has continuously monitored the deep body core temperatures of industrial workers. A program to continuously measure deep body core temperatures in 36 industrial workers working 10-, 12-, and 12.5-hour day and nightshifts in a hot, deep, underground mine in the Tropics was conducted. No heat illness occurred in these workers during the study. Miniaturized radio-transponders (&quot;pills&quot;) taken orally were used to measure temperature during the transit time in the gastrointestinal tract. Commonly recommended limits for industrial hyperthermia are 38.0 degrees C, or an increase of +1 degree C. The results showed that miners regularly exceeded these limits in terms of maximum deep body core temperature (average, 38.3 degrees C; standard deviation, 0.4 degree C), maximum temperature rise (1.4 degrees C, 0.4 degree C), and maximum heat storage (431 kJ, 163 kJ) without reporting any symptoms of heat illness. A significant component of the observed elevated core temperatures was attributable to the normal circadian rhythm, which was measured at 0.9 degree C (standard deviation, 0.2 degree C). Evidence was found that workers &quot;self-pace&quot; when under thermal stress.<p /> <p>Language: en</p>",
language="en",
issn="1076-2752",
doi="",
url="http://dx.doi.org/"
}