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400 Metres Hurdles
The 400 metres hurdles is a track and field hurdling event. The event has been on the Summer Olympics, Olympic Sport of athletics, athletics programme since 1900 Summer Olympics, 1900 for men and since 1984 Summer Olympics, 1984 for women. On a standard outdoor track, 400 metres is the length of the inside lane, once around the stadium. Runners stay in their lanes the entire way after starting out of the blocks and must clear ten Hurdling, hurdles that are evenly spaced around the track. The hurdles are positioned and weighted so that they fall forward if bumped into with sufficient force, to prevent injury to the runners. Although there is no longer any penalty for knocking hurdles over, runners prefer to clear them cleanly, as touching them during the race slows runners down. The current men's and women's List of world records in athletics, world record holders are Karsten Warholm with 45.94 seconds and Sydney McLaughlin-Levrone with 50.37 seconds. Compared to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karsten Warholm
Karsten Warholm (; born 28 February 1996) is a Norwegian Sport of athletics, sprinter who competes in the 400 metres and 400 metres hurdles, 400 m hurdles. He is the Athletics at the 2020 Summer Olympics, 2020 Tokyo Olympic champion, silver medalist at the Athletics at the 2024 Summer Olympics, 2024 Paris Olympics, three-time world champion and List of world records in athletics, world record holder in the latter event. Warholm has won gold for the 400 m hurdles at the World Athletics Championships in 2017 World Championships in Athletics, 2017, 2019 World Athletics Championships, 2019 and 2023 World Athletics Championships, 2023, as well as the 2018 European Athletics Championships, 2018, 2022 European Athletics Championships, 2022, and 2024 European Athletics Championships. He is the first athlete ever to win three 400 m hurdles events at the World Championships. Warholm is a two-time Diamond League 400 m hurdles champion. In 2021, he was voted World Athletics World A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Athletics
World Athletics, formerly known as the International Amateur Athletic Federation and International Association of Athletics Federations and formerly abbreviated as the IAAF, is the international sports governing body, governing body for the sport of athletics, covering track and field, cross country running, road running, racewalking, race walking, mountain running, and ultramarathon, ultra running. Included in its charge is the standardization of rules and regulations for the sports, certification of athletic facilities, recognition and management of list of world records in athletics, world records, and the organisation and sanctioning of athletics competitions, including the World Athletics Championships. The organisation's president is Sebastian Coe of the United Kingdom, who was elected to the four-year position in 2015 and re-elected in 2019 for a second four-year term, and then again in 2023 for a third four-year term. History The process to found World Athletics began in S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conjugate Acid
A conjugate acid, within the Brønsted–Lowry acid–base theory, is a chemical compound formed when an acid gives a proton () to a base—in other words, it is a base with a hydrogen ion added to it, as it loses a hydrogen ion in the reverse reaction. On the other hand, a conjugate base is what remains after an acid has donated a proton during a chemical reaction. Hence, a conjugate base is a substance formed by the removal of a proton from an acid, as it can gain a hydrogen ion in the reverse reaction. Because some acids can give multiple protons, the conjugate base of an acid may itself be acidic. In summary, this can be represented as the following chemical reaction: \text + \text \; \ce \; \text + \text Johannes Nicolaus Brønsted and Martin Lowry introduced the Brønsted–Lowry theory, which said that any compound that can give a proton to another compound is an acid, and the compound that receives the proton is a base. A proton is a subatomic particle in the n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactic Acid
Lactic acid is an organic acid. It has the molecular formula C3H6O3. It is white in the solid state and it is miscible with water. When in the dissolved state, it forms a colorless solution. Production includes both artificial synthesis as well as natural sources. Lactic acid is an alpha-hydroxy acid (AHA) due to the presence of a hydroxyl group adjacent to the carboxyl group. It is used as a synthetic intermediate in many organic synthesis industries and in various biochemical industries. The conjugate base of lactic acid is called lactate (or the lactate anion). The name of the derived acyl group is lactoyl. In solution, it can ionize by a loss of a proton to produce the lactate ion . Compared to acetic acid, its p''K'' is 1 unit less, meaning lactic acid is ten times more acidic than acetic acid. This higher acidity is the consequence of the intramolecular hydrogen bonding between the α-hydroxyl and the carboxylate group. Lactic acid is chiral, consisting of two en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anaerobic Exercise
Anaerobic exercise is a type of exercise that breaks down glucose in the body without using oxygen; ''anaerobic'' means "without oxygen". This type of exercise leads to a buildup of lactic acid. In practical terms, this means that anaerobic exercise is more intense, but shorter in duration than aerobic exercise. The biochemistry of anaerobic exercise involves a process called glycolysis, in which glucose is converted to adenosine triphosphate (ATP), the primary source of energy for cellular reactions. Anaerobic exercise may be used to help build endurance, muscle strength, and power. Metabolism Anaerobic metabolism is a natural part of metabolic energy expenditure. Fast twitch muscles (as compared to slow twitch muscles) operate using anaerobic metabolic systems, such that any use of fast twitch muscle fibers leads to increased anaerobic energy expenditure. Intense exercise lasting upwards of four minutes (e.g. a mile race) may still have considerable anaerobic energy e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USA Track & Field
USA Track & Field (USATF) is a United States national governing body for the sports of track and field, cross country running, road running, and racewalking (known as the sport of athletics outside the US). The USATF was known between 1979 and 1992 as ''The Athletics Congress'' (TAC) after its spin-off from the Amateur Athletic Union (AAU), which governed the sport in the US through most of the 20th century until the Amateur Sports Act of 1978 dissolved its responsibility. Based in Indianapolis, USATF is a non-profit organization with a membership of more than 130,000. The organization has three key leadership positions: CEO Max Siegel, Board of Directors Chair Steve Miller, and elected president Vin Lananna. U.S. citizens and permanent residents can be USATF members (annual individual membership fee: $35 for 18-year-old members and younger, $65 for the rest), but permanent residents can only participate in masters events in the country, and they cannot win USATF medals, prize ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1999 World Championships In Athletics
The 7th World Championships in Athletics, a World Athletic Championships event held under the auspices of the International Association of Athletics Federations, were held at the Estadio Olímpico de Sevilla, Seville, Spain, between the August 20 and August 29. One of the main highlights of the games was the world record set in the 400 metres by Michael Johnson of the United States in a time of 43.18 seconds. Men's results Track 1995 , 1997 , 1999 , 2001 , 2003 Note: * Indicates athletes who ran in preliminary rounds. 1 German Skurygin of Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ... originally won the gold medal in the 50 km walk in 3:44:23, but was disqualified after he tested positive for drugs in November 2001. 2 Nigeria ( Innocent Asonze, F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norbert Stein
Norbert is a Germanic given name and infrequent surname, from '' nord'' "north" and ''berht'' "bright". People with the given name Academia * Norbert Angermann (born 1936), German historian * Norbert A’Campo (born 1941), Swiss mathematician * Norbert Berkowitz (1924–2001), Canadian scientist * Norbert Bischofberger (born 1954), Austrian scientist * Norbert Bolz (born 1953), German philosopher * Norbert Elias (1897–1990), German Jewish sociologist * Norbert Fuhr (born 1956), German computer scientist * Norbert Geng (born 1965), German legal scholar * Norbert Guterman (1900–1984), American translator * Norbert von Hellingrath (1888-1916), German literary scholar * Norbert Hirschhorn (born 1938), American physician * Norbert Hornstein, American linguist * Norbert Jokl (1877–1942?), Austrian Jewish linguist * Norbert Klatt (1949–2015), German religious scholar * Norbert Leser (1933–2014), Austrian political scientist * Norbert Lynton (1927–2007), British a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Liberty Bell Classic
The Liberty Bell Classic was a track and field athletics event organized by the Athletics Congress as part of the 1980 Summer Olympics boycott and held at Franklin Field at the University of Pennsylvania in Philadelphia on July 16 and 17, 1980. It was named after Philadelphia's Liberty Bell. The U.S. Congress voted to approve $10 million in funding to alternative tournaments in several Olympic sports, to which athletes from boycotting countries would be invited. In addition to the Liberty Bell Classic, the U.S. Gymnastics Federation held an International Invitational tournament in Hartford, Connecticut. Earlier in the year, the United States had considered holding other games in Côte d'Ivoire, Italy, Japan, West Germany, or China. The IAAF prohibited any official track and field meet that would clash with the Olympic meet, so the Liberty Bell began three days before the Moscow Games opened (and ten days before the Olympic athletics events began). The Liberty Bell came th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moscow
Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents within the city limits, over 19.1 million residents in the urban area, and over 21.5 million residents in Moscow metropolitan area, its metropolitan area. The city covers an area of , while the urban area covers , and the metropolitan area covers over . Moscow is among the world's List of largest cities, largest cities, being the List of European cities by population within city limits, most populous city entirely in Europe, the largest List of urban areas in Europe, urban and List of metropolitan areas in Europe, metropolitan area in Europe, and the largest city by land area on the European continent. First documented in 1147, Moscow became the capital of the Grand Principality of Moscow, which led the unification of the Russian lan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1980 IAAF World Championships In Athletics
The 1980 World Championships in Athletics () was the second global, international athletics competition organised by the International Association of Athletics Federations (IAAF). Hosted from 14 to 16 August 1980 at the De Baandert in Sittard, Netherlands, it featured two events: the women's 400 metres hurdles and the women's 3000 metres run. West Germany's Birgit Friedmann took the first women's world title in the 3000 m, while her East German counterpart Bärbel Broschat became the first women's 400 m hurdles world champion.IAAF World Championships in Athletics GBR Athletics. Retrieved on 2013-09-08. Summary Historically, the IAAF and the |
World Athletics Championships
The World Athletics Championships, known as the IAAF World Championships in Athletics until 2019, are a biennial sport of athletics, athletics competition organized by World Athletics, formerly International Association of Athletics Federations. Alongside Athletics at the Summer Olympics, Olympic Games, the championships represents the highest level of senior international outdoor athletics competition for track and field athletics globally, including marathon running and race walking. Separate World Championships are held by World Athletics for certain other outdoor events, including cross-country running and half-marathon, as well as indoor and age-group championship. The World Championships were started in 1976 in response to the International Olympic Committee dropping the men's 50 km walk from the Athletics at the Summer Olympics, Olympic programme for the 1976 Montreal Olympics, despite its constant presence at the games since Athletics at the 1932 Summer Olympics – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
