User:Adpete/Altitude in Athletics

For athletes, high altitude produces two contradictory effects on performance. For explosive events (sprints up to 400 metres, long jump, triple jump) the reduction in atmospheric pressure means there is less resistance from the atmosphere and the athlete's performance will generally be better at high altitude. For throwing events, a study as suggested that altitude helps the hammer throw and impairs the discus throw. For endurance events (races of 800 metres or more), the predominant effect is the reduction in oxygen, which generally reduces the athlete's performance at high altitude.

This article is about altitude assistance; the effect on distance events is discussed in Effects of high altitude on humans#Athletic performance and Altitude training.

from Sports organizations acknowledge the effects of altitude on performance: for example, the governing body for the sport of athletics, World Athletics, has ruled that performances achieved at an altitude greater than 1,000 metres will be approved for record purposes, but carry the notation of "A" to denote they were set at altitude. The 1968 Summer Olympics were held at altitude in Mexico City. Most short sprint and jump records were set there at altitude. Other records were also set at altitude in anticipation of those Olympics. Bob Beamon's record in the long jump held for almost 23 years and has only been beaten once without altitude or wind assistance. Many of the other records set at Mexico City were later surpassed by marks set at altitude.

For athletics world records there is no restriction on altitude. Since the thinner atmosphere of higher altitude provides less air resistance, locations such as Mexico City and Sestriere have previously been the sites of records in the sprint and jump events. See effects of high altitude on humans. Records set at high altitude venues are often marked with an "A" though that does not disqualify it as a record. Under those circumstances, a "sea level" best is also tracked by statisticians. Long-distance races run at altitude, with less oxygen available to the athlete, have been shown to be to the athlete's disadvantage.