Exercise in Burn Survivors: Cooling Modalities

This project will identify the efficacy of cooling modalities aimed to attenuate excessive elevations in skin and internal body temperatures during physical activity in well-healed burn survivors. The investigators will conduct a randomized crossover design study. Non-burned control subjects, subjects who experienced burns covering \~20% to 40% of their body surface area, and subject having burns \>40% of their body surface area will be investigated. Subjects will exercise in heated environmental conditions while receiving the following cooling modalities: no cooling, fan only, skin wetting only, and a combination of fan and skin wetting.

Inclusion Criteria (non-burned individuals): * Healthy male and female subjects * 18-65 years of age. * Free of any underlying medical conditions Exclusion Criteria (non-burned individuals): * Any burn-related injuries resulting in at least one night of hospitalization. * Heart disease or any other chronic medical condition requiring regular medical therapy including cancer, diabetes, and hypertension. * Abnormalities detected on routine screening * Individuals who participate in a structured aerobic exercise training program at moderate to high intensities. * Current smokers, as well as individuals who regularly smoked within the past 3 years. * Body mass index of greater than 30 kg/m\^2. * Pregnant individuals Inclusion Criteria (burn survivors): * Healthy male and female subjects * 18-65 years of age. * Free of any underlying medical conditions * Having a burn injury covering 20-40% or \>40% of the participant's body surface area; at least 50% of those burn injuries must be full thickness that required skin grafting. * Participants must have been hospitalized due to the burn injury for a minimum of 15 days Exclusion Criteria (burn survivors): * Any burn-related injuries resulting in at least one night of hospitalization. * Heart disease or any other chronic medical condition requiring regular medical therapy including cancer, diabetes, and hypertension. * Abnormalities detected on routine screening * Individuals who participate in a structured aerobic exercise training program at moderate to high intensities. * Current smokers, as well as individuals who regularly smoked within the past 3 years. * Body mass index of greater than 30 kg/m\^2. * Pregnant individuals * Extensive unhealed injured skin