Highly trained athletes can access their aerobic metabolism at full capacity in which of the following conditions?

• A. While at complete rest
• B. During short, high-intensity sprints
• C. During prolonged, moderate-intensity exercise
• D. During anaerobic glycolysis

Answer: (C)

Verified step by step guidance

1. Understand the concept of aerobic metabolism: Aerobic metabolism refers to the process by which cells generate energy (ATP) using oxygen. It is most efficient during sustained activities that allow the body to maintain a steady oxygen supply to the muscles.
2. Analyze the conditions provided: Aerobic metabolism is not fully utilized at complete rest because the energy demand is low, and the body does not need to maximize oxygen use. Similarly, during short, high-intensity sprints or anaerobic glycolysis, the body relies more on anaerobic pathways due to the rapid energy demand exceeding oxygen availability.
3. Focus on prolonged, moderate-intensity exercise: During this type of activity, the body has enough time to deliver oxygen to the muscles, allowing aerobic metabolism to operate at full capacity. This is because the energy demand is steady and sustainable over time.
4. Eliminate incorrect options: At complete rest, the energy demand is minimal, so aerobic metabolism is not at full capacity. During short, high-intensity sprints and anaerobic glycolysis, the body primarily uses anaerobic pathways due to insufficient oxygen supply.
5. Conclude that the correct condition for accessing aerobic metabolism at full capacity is during prolonged, moderate-intensity exercise, as it provides the optimal balance of oxygen supply and energy demand.