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Jackline Wambui
Jackline Wambui (born 8 February 2000) is a Kenyan middle-distance runner who competes in the 800 metres event. Wambui won the gold medal in the 800 meters at the 2017 IAAF World U18 Championships in Nairobi. The following year, she finished eighth at the 2018 IAAF World U20 Championships in Tampere. In April 2019, she won the African Junior Championships in Abidjan, and then in August won the Kenyan National Championships. She withdrew from the 2019 IAAF World Athletics Championships after not taking a mandatory testosterone level test. Her personal best for the 800m is 1:58.79, set at Nyayo National Stadium Nyayo National Stadium is a multi-purpose stadium in Nairobi, Kenya. It is located at the square of Mombasa Road, Langata Road and the Aerodrome Road. It is approximately two kilometers from the City Center, directly opposite Nairobi Mega Mall, ..., Nairobi, on 13 September 2019. References {{DEFAULTSORT:Wambui, Jackline Living people 2000 births Kenyan fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Running
Running is a method of terrestrial locomotion allowing humans and other animals to move rapidly on foot. Running is a type of gait characterized by an aerial phase in which all feet are above the ground (though there are exceptions). This is in contrast to walking, where one foot is always in contact with the ground, the legs are kept mostly straight and the center of gravity vaults over the stance leg or legs in an inverted pendulum fashion.Biewener, A. A. 2003. Animal Locomotion. Oxford University Press, US. books.google.com/ref> A feature of a running body from the viewpoint of spring-mass mechanics is that changes in kinetic and potential energy within a stride occur simultaneously, with energy storage accomplished by springy tendons and passive muscle elasticity. The term running can refer to any of a variety of speeds ranging from jogging to Sprint (running), sprinting. Running in humans is associated with improved health and life expectancy. It is assumed that the ance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
800 Metres
The 800 metres, or meters ( US spelling), is a common track running event. It is the shortest commonly run middle-distance running event. The 800 metres is run over two laps of an outdoor (400-metre) track and has been an Olympic event since the first modern games in 1896. During the winter track season the event is usually run by completing four laps of an indoor 200-metre track. The event was derived from the imperial measurement of a half mile (880 yards), a traditional English racing distance. 800m is 4.67m less than a half mile. The event combines aerobic endurance with anaerobic conditioning and sprint speed, so the 800m athlete has to combine training for both. Runners in this event are occasionally fast enough to also compete in the 400 metres but more commonly have enough endurance to 'double up' in the 1500m. Only Alberto Juantorena and Jarmila Kratochvílová have won major international titles at 400m and 800m. Race tactics The 800m is also known for its tactical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nairobi, Kenya
Nairobi ( ) is the Capital city, capital and largest city of Kenya. The name is derived from the Maasai language, Maasai phrase ''Enkare Nairobi'', which translates to "place of cool waters", a reference to the Nairobi River which flows through the city. The city proper had a population of 4,397,073 in the 2019 census, while the metropolitan area has a projected population in 2022 of 10.8 million. The city is commonly referred to as the Green City in the Sun. Nairobi was founded in 1899 by colonial authorities in British East Africa, as a rail depot on the Uganda#Railroad, Uganda - Rail transport in Kenya, Kenya Railway.Roger S. Greenway, Timothy M. Monsma, ''Cities: missions' new frontier'', (Baker Book House: 1989), p.163. The town quickly grew to replace Mombasa as the capital of Kenya in 1907. After independence in 1963, Nairobi became the capital of the Republic of Kenya. During Kenya's colonial period, the city became a centre for the colony's coffee, tea and sisal indust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athletics (sport)
Athletics is a group of sporting events that involves competitive running, jumping, throwing, and walking. The most common types of athletics competitions are track and field, road running, cross country running, and racewalking. The results of racing events are decided by finishing position (or time, where measured), while the jumps and throws are won by the athlete that achieves the highest or furthest measurement from a series of attempts. The simplicity of the competitions, and the lack of a need for expensive equipment, makes athletics one of the most common types of sports in the world. Athletics is mostly an individual sport, with the exception of relay races and competitions which combine athletes' performances for a team score, such as cross country. Organized athletics are traced back to the Ancient Olympic Games from 776 BC. The rules and format of the modern events in athletics were defined in Western Europe and North America in the 19th and early 20th century, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IAAF World Youth Championships In Athletics
The IAAF U18 Championships in Athletics (until 2015 known as IAAF World Youth Championships in Athletics) was a global athletics event comprising track and field events for competitors who were 17 or younger (youth = Under-18). The event was organized by International Association of Athletics Federations (IAAF). It was held biennially from 1999 to 2017. The name change and cancellation In the 206th IAAF Council Meeting, held after the 2016 Summer Olympics, the council decided to conclude the world championship for under-18 athletes after the 2017 event. The decision was made with the intention of improving under-18 competitions at continental level instead. The competition was renamed to the IAAF World U18 Championships in November 2015, though ultimately only the 2017 competition used this title. The competition was the under-18 counterpart to the World U20 Championships, which are for athletes who are 19 years of age or under in the year of competition. Editions Championsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 World U18 Championships In Athletics
The 2017 IAAF World U18 Championships was the tenth and last edition of the biennial international athletics competition for youth (under-18) athletes. The five-day competition took place between 12 and 16 July at the Moi International Sports Centre in Nairobi, Kenya. Eligible athletes were aged 16 or 17 on 31 December 2017 (born in 2000 or 2001). South Africa topped the medals table with 11 medals, five of them gold, while host nation Kenya finished fourth with four gold and 15 medals in total. Boycott The United States, Great Britain, Australia, New Zealand, Canada, Japan, South Korea and Italy decided not to take part in the championships for organizational, logistical, and health and safety reasons (concerning athletes still underage). Medal summary Boys Girls Mixed * Medalists who participated in heats only. Medal table ;Notes Independent Athletes were not included in the official medal table. See also * 2017 Asian Youth Championships in Athletics * 2017 Afric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle-distance Running
Middle-distance running events are Track and field#Running, track races longer than Sprint (running), sprints, up to 3000 metres. The standard middle distances are the 800 metres, 1500 metres and mile run, although the 3000 metres may also be classified as a middle-distance event. The 1500 m came about as a result of running laps of a 400 m outdoor track or laps of a 200 m indoor track, which were commonplace in continental Europe in the 20th century.1500 m – Introduction IAAF. Retrieved on 5 April 2010. Events 500 metres A very uncommon middle-distance event that is sometimes run by sprinters for muscle stamina training.600 yards This was a popular distance, particularly indoors, when Imperial units, imperial distances were common. In ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2017 IAAF World U18 Championships
The 2017 IAAF World U18 Championships was the tenth and last edition of the biennial international athletics competition for youth (under-18) athletes. The five-day competition took place between 12 and 16 July at the Moi International Sports Centre in Nairobi, Kenya. Eligible athletes were aged 16 or 17 on 31 December 2017 (born in 2000 or 2001). South Africa topped the medals table with 11 medals, five of them gold, while host nation Kenya finished fourth with four gold and 15 medals in total. Boycott The United States, Great Britain, Australia, New Zealand, Canada, Japan, South Korea and Italy decided not to take part in the championships for organizational, logistical, and health and safety reasons (concerning athletes still underage). Medal summary Boys Girls Mixed * Medalists who participated in heats only. Medal table ;Notes Independent Athletes were not included in the official medal table. See also * 2017 Asian Youth Championships in Athletics * 2017 Afric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2018 IAAF World U20 Championships – Women's 800 Metres
The women's 800 metres at the 2018 IAAF World U20 Championships was held at Ratina Stadium on 10, 11 and 12 July. Records Results Heats Qualification: First 4 of each heat (Q) and the 4 fastest times (q) qualified for the semifinals. Semifinals Qualification: First 2 of each heat (Q) and the 2 fastest times (q) qualified for the final. Final References {{DEFAULTSORT:2018 World Junior Championships In Athletics - Women's 800 Metres 800 metres The 800 metres, or meters ( US spelling), is a common track running event. It is the shortest commonly run middle-distance running event. The 800 metres is run over two laps of an outdoor (400-metre) track and has been an Olympic event since the ... 800 metres at the World Athletics U20 Championships ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 African U18 And U20 Championships In Athletics
The 2019 African U20 Championships in Athletics was the fourteenth edition of the biennial, continental athletics tournament for African athletes aged 19 years or younger, for the first time held jointly with the African U18 Championships in Athletics. It was held at the Stade Félix Houphouët-Boigny in Abidjan, Ivory Coast, between 16 and 20 April. Medal table Medal summary Men (U20) Women (U20) Boys (U18) Girls (U18) References ;ResultsU20 resultsat AfricAthleU18 resultsat AfricAthleResultsat Tilastopaja {{2019 in athletics African Junior Athletics Championships African U18 and U20 Championships in Athletics African U18 and U20 Championships in Athletics Junior Athletics Championships African U20 Championships in Athletics The African Junior Athletics Championships is a biennial continental athletics event for junior athletes from African nations. Organized by the Confederation of African Athletics The Confederation of African Athletics (CAA; French: '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2019 IAAF World Athletics Championships
The 2019 IAAF World Athletics Championships () was the seventeenth edition of the biennial, global athletics competition organised by the International Association of Athletics Federations (IAAF), since renamed World Athletics. It was held between 27 September and 6 October 2019 in Doha, Qatar, at the renovated multi-purpose Khalifa International Stadium, but reduced to 21,000 available seats. 1,772 athletes from 206 teams competed in 49 athletics events over the ten-day competition, comprising 24 events each for men and women, plus a mixed relay. There were 43 track and field events, 4 racewalking events, and 2 marathon road running events. The racewalking and marathon events were held in Doha Corniche. It was the first edition of the competition under its modified name, having previously been known as the World Championships in Athletics, and the last held before the IAAF assumed its new identity as World Athletics. It was also the first time the competition was in the Middl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Testosterone
Testosterone is the primary sex hormone and anabolic steroid in males. In humans, testosterone plays a key role in the development of Male reproductive system, male reproductive tissues such as testes and prostate, as well as promoting secondary sexual characteristics such as increased muscle and bone mass, and the growth of androgenic hair, body hair. In addition, testosterone in both sexes is involved in health and well-being, including moods, behaviour, and in the prevention of osteoporosis. Insufficient levels of testosterone in men may lead to abnormalities including frailty and bone loss. Testosterone is a steroid from the androstane class containing a ketone and a hydroxyl group at positions three and seventeen respectively. It is Biosynthesis, biosynthesized in several steps from cholesterol and is converted in the liver to inactive metabolites. It exerts its action through binding to and activation of the androgen receptor. In humans and most other vertebrates, testost ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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