ACE Group Fitness Instructor Practice Exam

At what core temperature can exertion-related heat illness and heat stroke occur?

1. 100° F

2. 102° F

3. 104° F

4. 106° F

The correct answer is: 104° F

Exertion-related heat illness and heat stroke typically occur when the core body temperature reaches 104°F (40°C) or higher. At this temperature, the body's ability to dissipate heat through sweating and other mechanisms becomes compromised, leading to a dangerous buildup of heat. When the core temperature exceeds this threshold, it can disrupt the body's thermoregulation. The risk for serious health issues, including organ dysfunction and even death, increases significantly. It is crucial for fitness instructors to recognize the signs of heat-related illness and understand the implications of high core temperatures, especially during intense physical activity in hot conditions. The other temperature choices fall below the critical threshold for heat-related illnesses. Although exertion and heat can lead to discomfort and mild heat-related symptoms at lower temperatures, such as 100°F, 102°F, or even at 106°F, the pivotal concern lies at the 104°F mark, where immediate medical attention is often required to prevent severe complications.