Which method is illegal but used to improve oxygen carrying capacity in endurance sports?

Which method is illegal but used to improve oxygen carrying capacity in endurance sports?

• A. EPO
• B. HGH
• C. Blood doping
• D. PEDs

Answer: (C)

Improving oxygen delivery to working muscles helps endurance performance. Blood doping directly increases red blood cell mass and hemoglobin, so the blood can carry more oxygen to the muscles during exercise. This is usually done by taking and storing the athlete’s blood and reinjecting it before competition, or transfusing blood from another person. It’s illegal in sport because it provides an unfair advantage and carries health risks like thickened blood and clots. While substances such as EPO can also raise red blood cell production, the method described here refers to manipulating the blood itself, which is why blood doping is the correct answer. HGH affects growth and recovery more than oxygen transport, and PEDs is a broad category rather than a specific method.

Improving oxygen delivery to working muscles helps endurance performance. Blood doping directly increases red blood cell mass and hemoglobin, so the blood can carry more oxygen to the muscles during exercise. This is usually done by taking and storing the athlete’s blood and reinjecting it before competition, or transfusing blood from another person. It’s illegal in sport because it provides an unfair advantage and carries health risks like thickened blood and clots. While substances such as EPO can also raise red blood cell production, the method described here refers to manipulating the blood itself, which is why blood doping is the correct answer. HGH affects growth and recovery more than oxygen transport, and PEDs is a broad category rather than a specific method.