Final answer:
The treatment for someone with exertional heat stroke involves rapid whole-body cooling using cold water immersion or ice water immersion, along with other supportive treatments.
Step-by-step explanation:
The treatment for someone with exertional heat stroke, as stated in the NATA's position statement on preventing sudden death in sports, involves immediate medical intervention to lower the body temperature and prevent further complications. The primary treatment method is rapid whole-body cooling using cold water immersion or ice water immersion. This involves submerging the individual in cold water or applying ice packs to the body to quickly lower the body temperature. Other supportive treatments may include intravenous fluids, electrolyte replacement, and monitoring of vital signs. It is essential to seek medical assistance as soon as possible if someone is experiencing exertional heat stroke.