400 Meter
The 400 metres, or 400-meter dash, is a sprint event in track and field competitions. It has been featured in the athletics (sport), athletics programme at the Summer Olympics since 1896 for men and since 1964 for women. On a standard outdoor running track, it is one lap around the track. Runners start in staggered positions and race in separate lanes for the entire course. In many countries, athletes previously competed in the 440-yard dash (402.336 m)—which is a quarter of a mile and was referred to as the 'quarter-mile'—instead of the 400 m (437.445 yards), though this distance is now obsolete. Like other sprint disciplines, the 400 m involves the use of starting blocks. The runners take up position in the blocks on the 'ready' command, adopt a more efficient starting posture which Isometric exercise#Isometric presses as preparation for explosive power movements, isometrically preloads their muscles on the 'set' command, and stride forwards from the block ...
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Wayde Van Niekerk
Wayde van Niekerk (South African English: , ; born 15 July 1992) is a South African track and field sprinter who competes in the 200 and 400 metres. In the 400 metres, he is the current world and Olympic record holder, having set the record in the Olympic finals. He also holds the world-best time in the 300 metres. Van Niekerk was the silver medallist in the 400m at the 2014 Commonwealth Games and took silver in the 4×400 metres relay at the 2013 Summer Universiade. He also represented South Africa at the 2013 and 2015 Athletics World Championships. At the 2015 World Championships, he won the gold medal in the 400 metres. He defended his title two years later, in London, where he also won the silver medal in the 200 metres race. In the 2016 Olympic Games men's 400m, Van Niekerk won the gold medal with a world record time of 43.03 seconds (reaction time 0.181 s) at age 24 years and 30 days, beating the time of 43.18 seconds set by Michael Johnson during the 1999 World ...
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