Distance running is the most affected by altitude, some thing are easier, speed running is actually easier, and you jump higher and farther at higher altitudes, and throw harder.
“The scientific literature is rich in human trials of altitude acclimation. From military activity to mountaineering, physiological feats up high have inspired generations of scientists. However, I think the biggest driver in performance-related high-altitude research was the 1968 Summer Olympics in Mexico City. The Mexico City Olympics were held at 7,350 feet (2,240 meters) above sea level, higher than any other Olympic games in history. The Mexico City Olympics were interesting because, despite the high elevation being a negative influencer and a performance reducer in endurance-running events, the ‘thin air’ created optimal conditions for record-setting performances in jumping, vaulting, and throwing events along with all men’s track events shorter than 400 meters due to decreased air resistance. This was an environmental phenomenon that had not been considered before as both a performance reducer and enhancer, depending on the event.”
The science of altitude acclimation for endurance running and other outdoor sports.
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