Efficacy of an Investigational Thermal Rehab Machine on Body Cooling in Hyperthermic Individuals
Efficacy of an Investigational Thermal Rehab Machine on Body Cooling in Hyperthermic Individuals
Exertional heat stroke (EHS) is an emergency medical condition that is prevalent in military
 soldiers, athletes, and laborers. It is diagnosed when the rectal temperature is above 40°C
 with the presence of central nervous dysfunction (altered mental status). The gold standard
 method of care for EHS is immediate onsite whole body cooling using cold-water immersion
 (cooling rates >0.15°C•min-1), which is reported to have the highest cooling rate. In the
 treatment of EHS, selecting a cooling modality with a high cooling rate becomes crucial to
 minimize the time above the critical threshold of body temperature at 40°C to less than 30
 minutes for the best chance of survival and to minimize the severity of prognosis. However,
 in situations where cold water immersion is not feasible (in certain military, firefighter,
 or other remote settings), other cooling modalities must be available that have a cooling
 capacity similar to that of cold-water immersion. In this proposed study, the investigators
 aim to examine the cooling rates of the Polar Breeze® device (developed by Statim
 Technologies, LLC, Clearwater, FL) compared to rotating ice towels, a cooling method often
 recommended by sports medicine professionals as an alternative to cold-water immersion, and
 passive rest in participants with exercise-induced hyperthermia.
Inclusion Criteria:

 -  male between the ages of 18-35.

 -  recreationally active (regularly exercise at a minimum of 4-5 times per week for
 greater than 30 minutes per session)

 Exclusion Criteria:

 -  chronic health problems,

 -  fever or current illness at the time of testing

 -  history of cardiovascular, metabolic, or respiratory disease

 -  current musculoskeletal injury that limits physical activity

 -  history of exertional heat illness in the past three years.