Abstract
Abstract This study investigated the performance of a new infrared-sensing thermometer in the determination of heat stress in firefighters performing moderate exercise in two protective clothing ensembles. All existing consensus standards approach the topic of heat stress monitoring and prevention. These standards are designed to keep the core body temperature of workers below 38°C. Direct measurement of rectal temperature is inconvenient and impractical, so surrogate measures of environmental heat have been widely accepted. Surrogate measures are poor predictors of heat stress in situations where protective clothing interferes with the body's means of losing heat. In these situations, direct measurement of the body's response to heat is desirable. Previous investigation had shown the effectiveness of infrared thermometry in a surgical setting, but no research had been done in the area of worker monitoring. Eight hazardous materials-trained firefighters exercised on a stair machine while wearing gym cloth...
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