What is a reported benefit for athletes returning to sea level after altitude training?

What is a reported benefit for athletes returning to sea level after altitude training?

• A. Decreased red blood cell count
• B. Enhanced oxygen-carrying capacity
• C. Increased lactate production
• D. Decreased VO2 max

Answer: (B)

Exposure to hypoxia during altitude training triggers the body to boost red blood cell production, increasing hemoglobin. When the athlete returns to sea level, this extra red blood cell mass enhances the blood’s ability to pick up and deliver oxygen to working muscles. In other words, the oxygen-carrying capacity of the blood is improved, which supports better endurance and performance. The other ideas don’t fit this common outcome: a lower red blood cell count would reduce oxygen transport, higher lactate production isn’t a direct, typical benefit of altitude adaptation, and a lower VO2 max would hinder performance.

Exposure to hypoxia during altitude training triggers the body to boost red blood cell production, increasing hemoglobin. When the athlete returns to sea level, this extra red blood cell mass enhances the blood’s ability to pick up and deliver oxygen to working muscles. In other words, the oxygen-carrying capacity of the blood is improved, which supports better endurance and performance. The other ideas don’t fit this common outcome: a lower red blood cell count would reduce oxygen transport, higher lactate production isn’t a direct, typical benefit of altitude adaptation, and a lower VO2 max would hinder performance.