Heat Illness in Hot/Humid Environment

A formalized education program and the Botsball device to measure the wet bulb temperature provided the difference under field conditions between a control group of 220 military reservists with 9.1% heat casualties, and a study group of 306 with 4.2% heat casualties in a hot/humid environment. The latter group received specific schedules for water intake and work/rest cycles dependent upon measured heat stress. Guidelines for activity and the Botsball in adverse environments can reduce the number of casualties due to weather.