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Sprinting is running over a short distance at the top-most speed of the body in a limited period of time. It is used in many sports that incorporate running, typically as a way of quickly reaching a target or goal, or avoiding or catching an opponent. Human physiology dictates that a runner's near-top speed cannot be maintained for more than 30–35 seconds due to the depletion of phosphocreatine stores in muscles, and perhaps secondarily to excessive metabolic acidosis as a result of anaerobic glycolysis.
The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women.
The 400 metres, or 400-meter dash, is a sprint event in track and field competitions. It has been featured in the 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.
Nigeria competed at the 1996 Summer Olympics in Atlanta, United States. The most surprising achievement was Nigeria's gold in football. The team overcame what are usually considered much stronger teams, such as Brazil and finally Argentina to earn the gold.
Aaron Nigel Armstrong is a track and field sprint athlete who competes internationally for Trinidad and Tobago. He is the 2008 Olympic champion in 4 × 100 metres relay.
Nigeria first participated in the Olympic Games in 1952, and has sent athletes to compete in every Summer Olympic Games since then, except for the boycotted 1976 Summer Olympics. The nation participated in the Winter Olympic Games in 2018, having qualified female athletes in bobsleigh and skeleton.
Abu Duah is a Ghanaian sprinter who specializes in the 100 metres. He competed in the 4 × 400 metres relay at the 1996 Summer Olympics and the 2000 Summer Olympics.
Udeme Sam Ekpeyong is a retired Nigerian sprinter who specialized in the 400 metres.
Hassan Bosso is a retired Nigerian sprinter.
Crystal Emmanuel is a Canadian sprinter who specialises in the 200 metres. She is the Canadian champion in both the 100m and 200m as of July 2018. Crystal also holds the 200m record for Canada, having broken a record that stood for 34 years. She competed in this event at the 2012, 2016 and 2020 Summer Olympics, but was eliminated in the semi-finals. At the 2013 World Championships in Athletics, she was eliminated in the heats after being disqualified for a lane infringement.
Ayomide Temilade Oluwatoyosi Folorunso is an Italian athlete specialising in the 400 metres hurdles. She competed in the 4 × 400 metres relay at the 2015 World Championships in Beijing.
Emmanuel Dasor is a Ghanaian sprinter specializing in the 200 meters and 400 meters races. He represented his country at the 2016 World Indoor Championships without advancing from the first round.
Julien Watrin is a Belgian sprinter specialising in the 400 metres. In 2023, he won his first individual major senior medal, with silver at the European Indoor Championships. Watrin earned several major medals with national men's 4 × 400 m relays, including bronzes at the 2019 and 2022 World Athletics Championships.
Gail Emmanuel is a Trinidad and Tobago sprinter. She competed in the women's 400 metres at the 1984 Summer Olympics.
Emmanuel Kipkurui Korir is a Kenyan middle-distance runner. He is the 2020 Tokyo Olympic and 2022 World champion in the 800 metres. Korir won the silver medal in the event at the 2018 African Championships in Athletics.
Emmanuel Tugumisirize is a retired Ugandan sprinter who specialized in the 400 metres.
The women's 4 × 100 metres relay competition of the athletics events at the 2019 Pan American Games took place on 9 of August at the 2019 Pan American Games Athletics Stadium. The defending Pan American Games champion is United States.
Mohamed Ali Gouaned is an Algerian middle-distance runner specializing in the 400 meters and 800 meters. He holds the Junior World best in 600 meters with a time of 1:14:79 set in Algiers on 26 March 2021 breaking the record held by Wilfred Bungei since 1 September 1999 with a time of 1:14:94.
Ifeanyi Emmanuel Ojeli is a Nigerian athlete. He competed in the mixed 4 × 400 metres relay event at the 2020 Summer Olympics.
The 2022 British Indoor Athletics Championships were the national indoor track and field competition for British athletes, held on 26 and 27 February 2022 at Arena Birmingham. The competition served as a qualification event for the 2022 World Athletics Indoor Championships, and on 1 March, 33 British competitors were announced for that championships, and this was increased to 36 a couple of days later.
