Born High, Born Fast: Is Altitude Birth an Endurance Edge?

Did you know that a small group of people, about 7% of the world's population, live above 1500 meters? These highland dwellers might have a secret to winning endurance races at sea level. In the 2020 Olympics, a surprising 67% of medalists in the marathon and 100% in the 5000-meter race come from these high-altitude regions. Why is that? Research over the past 25 years shows that highlanders have unique lung adaptations that could boost their endurance. For instance, they often have a larger exercise capacity compared to sea-level residents who visit high altitudes. But the question is: does being born at high altitude give an advantage in sea-level competitions?

Let's break down the highlanders into three groups: the native highlanders, those who recently moved there, and temporary residents. Focusing on lung changes starting from birth, we consider if avoiding altitude-related lung issues could lead to benefits in sea-level races. Native highlanders are naturally adapted to their environment. They develop larger lung capacities and more efficient oxygen use. This could translate to better performance in endurance events. However, highland newcomers and sojourners might not see the same benefits due to their bodies still adjusting. So, is altitude birth an edge in endurance? It's an interesting question that needs more exploration. While it seems promising, it's not a guaranteed advantage.

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