![]() also found that cooler weather (5–10☌) was associated with better ability to maintain running velocity through a marathon race compared to warmer conditions especially by fastest runners weather impacted pacing and the impact was dependent on finishing position. ![]() , found a progressive and quantifiable slowing of marathon performance as WBGT (Wet Bulb Globe Temperature) increases, for men and women of wide ranging abilities. The relationship between marathon performance decline and warmer air temperature has been well established. Exposure to air pollution during exercise might be expected to impair an athlete's performance in endurance events lasting one hour or more. Both might increase the deleterious effects of pollutants on health and athletic performance. They switch from nasal to mouth breathing, bypassing nasal filtration mechanisms for large particles. Runners could be at risk during competitions as they are subject to elevated ventilation rate and increased airflow velocity amplifying the dose of inhaled pollutants and carrying them deeper into the lungs –. In addition, participating in an outdoor urban event exposes athletes to air pollution which raises concerns for both performance and health. More medical complaints of hyperthermia (internal temperature ≥39☌) occur in warm weather events, while hypothermia (internal temperature ≤35☌) sometimes occurs during cool weather events. Warm weather during a marathon is detrimental for runners and is commonly referenced as limiting for thermoregulatory control. The marathon is one of the most challenging endurance competitions it is a mass participation race held under variable environmental conditions and temperatures sometimes vary widely from start to finish –. ![]() Kipchoge ran the second half of the Berlin Marathon even quicker than the first, finishing the final 13.1 miles in 1:00:33Īs Jon Mulkeen from the IAAF points out, it's enough to give you cramp just thinking about it.Like most phenotypic traits, athletic performance is multifactorial and influenced by genetic and environmental factors: exogenous factors contribute to the expression of the predisposing characteristics among best athletes. He covered 30km in 1:26:45, also the fastest time ever recorded for that distance. To break that down further, he ran every 400m in 68.8 seconds. Kipchoge's average speed was 13mph, an average pace of 2.83 minutes-per-kilometre for each kilometre of the 42.195km race.
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