Which of the following is a potential problem of altitude training?

• A. Altitude sickness
• B. Immediate performance gain at sea level
• C. Decreased red blood cell count
• D. Reduced hemoglobin

Answer: (A)

Altitude training works by exposing the body to lower oxygen levels to trigger adaptations that improve oxygen transport, such as an increase in red blood cell production. A major potential problem during this exposure is altitude sickness, which occurs because the oxygen available is much lower at height. This can cause headaches, nausea, dizziness, and fatigue and may limit training effectiveness if the athlete can’t train at the required intensity. The body does begin to acclimatize, increasing breathing rate and heart rate and, over time, red blood cell production, but the initial hypoxic stress is what makes altitude sickness a real concern. The other options don’t fit this issue: red blood cell count and hemoglobin typically rise with altitude exposure, not decrease, and any immediate performance gain at sea level isn’t a problem of altitude training itself.