Human Subject Testing and Physiological Evaluation
topic
Human subject physiological evaluation of firefighter clothing uses test protocols where volunteer firefighters wearing instrumented clothing ensembles complete standardised exercise protocols on treadmills or in environmental chambers while core temperature, heart rate, sweat rate, and perceived exertion are measured, with comparison between clothing variants providing the direct physiological performance evidence that manikin and flat specimen testing cannot replicate in quantifying real human heat stress consequences.
Role
Provides the definitive physiological performance evidence that establishes whether laboratory material and manikin measurements correctly predict human heat stress outcomes, with human subject testing being the gold standard validation for clothing physiological performance claims and the test basis for the THL requirements in NFPA 1971 that were established from correlations between THL measurements and human subject heat stress outcomes in standardised exercise protocols.