Brigid Kosgie will not be participating at this year's London marathon. She's pulled out of the race after a hamstring injury.

Kenya's World record holding runner to miss London marathon | Latest World News | WION

Nike has come up with new "gamechanging" Air Zoom Alphafly Next% shoes that will fit into World Athletics-set rules. The introduction has come days after the ban on Nike's Vaporfly.&nbsp;

Also read:&nbsp;<a href="https://www.wionews.com/sports/world-athletics-puts-the-brakes-on-nikes-record-breaking-shoes-277876">World Athletics puts the brakes on Nike's record-breaking shoes</a>

Some variants of Nike's Vaporfly running shoes have been banned&nbsp;for elite competition and strict limits on the technology developed for any future shoes introduced after World Athletics announced significant changes to its rules last Friday.&nbsp;

The new Air Zoom Alphafly Next% are said to be inspired by shoes worn by Kenya's Eliud Kipchoge during his unofficial marathon race in October. In that race, Eliud was two minutes quicker than his official World Record.&nbsp;

According to Nike's twitter handle:&nbsp;"NEXT% technology enables athletes to shatter personal boundaries and break records. Nike's newest race-day shoe is designed to improve cushioning and running economy, the crosspoint between sports science and purposeful design."

The rival brands and athletes are upset with the new shoe that looks more like platform boot than traditional racing flat. They feel this is 'technical doping'. According to the sources who tried the Alphafly have said that the shoes are quick and confirmed that the new shoes are faster than the much-hyped Vaporfly.&nbsp;

Vaporfly's dominance in the athletic world was for the world to see, out of 36 positions in six world marathon majors, 31 position holders donned the Nike shoe in the year 2019.

Kenya's Eliud Kipchoge and Brigid Kosgei are one of the famous record-breaking marathon runners whose names surfaced when questions were raised regarding Vaporfly. These athletes wore the troubled Nike shoe during their record-breaking marathon.&nbsp;

Vaporfly was&nbsp;said to provide&nbsp;athletes with 4 per cent of running economy, whereas the new Alphafly will give around 7 to 8 per cent of running economy to the athletes. The Air Zoom Alphafly NEXT% has a sole thickness of 39.5mm, which makes it legal as 40mm limit was set by the Athletics governing body.&nbsp;

According to the Wall Street Journal, Nike will also offer the shoe in limited quantities online by the end of the month, meaning it will also meet World Athletics’s requirement for new shoes to be available to the public by April to be eligible for the Tokyo Olympics starting in July.

Nike has come up with new "gamechanging" Air Zoom Alphafly Next% shoes that will fit into World Athletics-set rules. The introduction has come days after the ban on Nike's Vaporfly.

Nike has come up with new "gamechanging" Air Zoom Alphafly Next% shoes that will fit into World Athletics-set rules. The introduction has come days after the ban on Nike's Vaporfly. Also read: World Athletics puts the brakes on Nike's record-breaking shoes Some variants of Nike's Vaporfly running shoes have been banned for elite competition and strict limits on the technology developed for any future shoes introduced after World Athletics announced significant changes to its rules last Friday. The new Air Zoom Alphafly Next% are said to be inspired by shoes worn by Kenya's Eliud Kipchoge during his unofficial marathon race in October. In that race, Eliud was two minutes quicker than his official World Record. According to Nike's twitter handle: "NEXT% technology enables athletes to shatter personal boundaries and break records. Nike's newest race-day shoe is designed to improve cushioning and running economy, the crosspoint between sports science and purposeful design." The rival brands and athletes are upset with the new shoe that looks more like platform boot than traditional racing flat. They feel this is 'technical doping'. According to the sources who tried the Alphafly have said that the shoes are quick and confirmed that the new shoes are faster than the much-hyped Vaporfly. Vaporfly's dominance in the athletic world was for the world to see, out of 36 positions in six world marathon majors, 31 position holders donned the Nike shoe in the year 2019. Kenya's Eliud Kipchoge and Brigid Kosgei are one of the famous record-breaking marathon runners whose names surfaced when questions were raised regarding Vaporfly. These athletes wore the troubled Nike shoe during their record-breaking marathon. Vaporfly was said to provide athletes with 4 per cent of running economy, whereas the new Alphafly will give around 7 to 8 per cent of running economy to the athletes. The Air Zoom Alphafly NEXT% has a sole thickness of 39.5mm, which makes it legal as 40mm limit was set by the Athletics governing body. According to the Wall Street Journal, Nike will also offer the shoe in limited quantities online by the end of the month, meaning it will also meet World Athletics’s requirement for new shoes to be available to the public by April to be eligible for the Tokyo Olympics starting in July.

Now, Nike introduces 'Air Zoom Alphafly NEXT%' days after Vaporfly dispute

Nike's Vaporfly shoe has stirred a lot of controversy regarding its sole giving an edge to athletes in terms of energy efficiency. According to Nike, the shoes provide mind-boggling 4 per cent of energy efficiency to the contestants. Many experts accused the shoe of giving an "unfair advantage" to the runner.&nbsp;

Also read:&nbsp;<a href="https://www.wionews.com/sports/vaporfly-nikes-shoes-worn-by-marathon-champions-at-risk-of-getting-banned-274923">Unfair advantage? Nike's 'Vaporfly' shoes worn by top runners risk ban</a>

Vaporfly is&nbsp;a common choice of shoes worn by marathon champions. According to The Guardian, World Athletics organization, which is the governing body for most of the international track and field event will not be imposing a ban on Vaporfly shoes.&nbsp;

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“I run to prove to any human in this universe that there are no limitations.” <a href="https://twitter.com/EliudKipchoge?ref_src=twsrc%5Etfw">@EliudKipchoge</a> 
 
A crazy dream come true — Eliud Kipchoge becomes the world’s first to run a marathon in under two hours. <a href="https://twitter.com/hashtag/justdoit?src=hash&amp;ref_src=twsrc%5Etfw">#justdoit</a> <a href="https://t.co/12mVz1wbpd">pic.twitter.com/12mVz1wbpd</a>
— Nike (@Nike) <a href="https://twitter.com/Nike/status/1182955340670947329?ref_src=twsrc%5Etfw">October 12, 2019</a></blockquote>
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The governing body formed a working group of athletes, scientists and legal experts to review the shoe and its technology. They have decided to hold the ban against the shoe, however, a temporary suspension has been placed for any fresh 'shoe technology' until the next summer Olympics which is held in Tokyo which springs on July 24. Companies will be likely to be asked to present their prototype shoes to the World Athletics committee for approval before they could be used in the competitions.

The governing body is&nbsp;yet to announce their official statement, the announcement is slated to take place on Friday.&nbsp;

Vaporfly's dominance in the athletic world is for the world to see, out of 36 positions in six world marathon majors, 31 position holders donned the Nike shoe in the year 2019.

Kenya's Eliud Kipchoge and Brigid Kosgei are one of the famous record-breaking marathon runners whose names surfaced when questions were raised regarding Vaporfly. These athletes wore the troubled Nike shoe during their record-breaking marathon.&nbsp;

Nike's Vaporfly shoe has stirred a lot of controversy regarding its sole giving an edge to athletes in terms of energy efficiency. According to Nike, the shoes provide mind-boggling 4 per cent of energy efficiency to the contestants.

Nike's Vaporfly shoe has stirred a lot of controversy regarding its sole giving an edge to athletes in terms of energy efficiency. According to Nike, the shoes provide mind-boggling 4 per cent of energy efficiency to the contestants. Many experts accused the shoe of giving an "unfair advantage" to the runner. Also read: Unfair advantage? Nike's 'Vaporfly' shoes worn by top runners risk ban Vaporfly is a common choice of shoes worn by marathon champions. According to The Guardian, World Athletics organization, which is the governing body for most of the international track and field event will not be imposing a ban on Vaporfly shoes. “I run to prove to any human in this universe that there are no limitations.” @EliudKipchoge A crazy dream come true — Eliud Kipchoge becomes the world’s first to run a marathon in under two hours. #justdoit pic.twitter.com/12mVz1wbpd — Nike (@Nike) October 12, 2019 × The governing body formed a working group of athletes, scientists and legal experts to review the shoe and its technology. They have decided to hold the ban against the shoe, however, a temporary suspension has been placed for any fresh 'shoe technology' until the next summer Olympics which is held in Tokyo which springs on July 24. Companies will be likely to be asked to present their prototype shoes to the World Athletics committee for approval before they could be used in the competitions. The governing body is yet to announce their official statement, the announcement is slated to take place on Friday. Vaporfly's dominance in the athletic world is for the world to see, out of 36 positions in six world marathon majors, 31 position holders donned the Nike shoe in the year 2019. Kenya's Eliud Kipchoge and Brigid Kosgei are one of the famous record-breaking marathon runners whose names surfaced when questions were raised regarding Vaporfly. These athletes wore the troubled Nike shoe during their record-breaking marathon.

Nike's controversial Vapor Fly to evade ban, rules on running shoes to be stringent

Nike's Vaporfly shoes are making headlines for all wrong reasons for its "unfair technology"&nbsp;that supports athletes during sprints.

Also read-&nbsp;<a href="https://www.wionews.com/business-economy/nike-shuts-down-oregon-project-after-coach-salazar-banned-255212">Nike shuts down Oregon Project after coach Alberto Salazar banned</a>

Nike said&nbsp;on its website that the shoe, which retails at around $250, has "a built-in secret weapon".

Also read-&nbsp;<a href="https://www.wionews.com/world/quitters-day-study-reveals-people-are-likely-to-give-up-on-their-new-year-resolutions-on-january-19-274753">Quitter's day! Study reveals people are likely to give up on their New Year resolutions on January 19</a>

Analysts say the debate over Nike's "Vaporfly"&nbsp;shoes gives runners an unfair technological advantage and mainly helps the world's largest athletic apparel company sell more shoes.

Independent studies have concluded that the shoes, which has&nbsp;a curved, carbon-fibre plate embedded in a thick layer of lightweight foam, improves metabolic efficiency by 4 per cent, though that does not necessarily mean a runner will be 4 per cent faster.

Nike's shoe has a 1.4-inch sole, higher the sole more the efficiency, whereas other shoes have a sole thickness of 1 inch.

A working group at governing body world athletics has been examining for months on what to do about the hyper-advanced footwear, used by elite runners including Kenya's <a href="https://www.wionews.com/.../kenyas-kipchoge-becomes-first-ever-to-run- marathon-in-under-two-hours-255461">Eliud Kipchoge</a> and Brigid Kosgei who gave stunning performances last year.

World Athletics' current rules say running shoes can't provide any "unfair assistance or advantage"&nbsp;and they should be available for all.

Laurues Award nominee Eliud Kipchoge broke the record in the Berlin Marathon in 2018. He wore the Vaporfly prototype.&nbsp;

<div class="ui-state-default" contenteditable="false">
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“I run to prove to any human in this universe that there are no limitations.” <a href="https://twitter.com/EliudKipchoge?ref_src=twsrc%5Etfw">@EliudKipchoge</a> 
 
A crazy dream come true — Eliud Kipchoge becomes the world’s first to run a marathon in under two hours. <a href="https://twitter.com/hashtag/justdoit?src=hash&amp;ref_src=twsrc%5Etfw">#justdoit</a> <a href="https://t.co/12mVz1wbpd">pic.twitter.com/12mVz1wbpd</a>
— Nike (@Nike) <a href="https://twitter.com/Nike/status/1182955340670947329?ref_src=twsrc%5Etfw">October 12, 2019</a></blockquote>
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<a href="https://www.wionews.com/.../kenyas-brigid-kosgei-breaks-womens-half- marathon-world-record-248454">Brigid Kosgei</a> beat the previous record by just 81 seconds in 2019. She ran in the Chicago marathon. She was clocked at 2 hours, 14 minutes and 4 seconds. She wore the infamous Vaporfly.

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If it hasn’t been done before, it’s yours to claim. 
 
Brigid Kosgei becomes the fastest woman in history to run 26.2 miles with a time of 2:14:04. Congrats on your World Record and second consecutive victory at the Bank of America Chicago Marathon. <a href="https://twitter.com/hashtag/justdoit?src=hash&amp;ref_src=twsrc%5Etfw">#justdoit</a> <a href="https://twitter.com/hashtag/chicagomarathon?src=hash&amp;ref_src=twsrc%5Etfw">#chicagomarathon</a> <a href="https://t.co/7wQYJvCRWx">pic.twitter.com/7wQYJvCRWx</a>
— Nike (@Nike) <a href="https://twitter.com/Nike/status/1183433710881792000?ref_src=twsrc%5Etfw">October 13, 2019</a></blockquote>
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Shares in the Oregon-based firm were up 0.5 per cent, while those in rivals Under Armor and Skechers USA gained about 1.5 per cent. Japan's Asics corp. earlier closed up 2.5 per cent.

Nike's Vaporfly shoes are making headlines for all wrong reasons for its "unfair technology" that supports athletes during sprints. Also read- Nike shuts down Oregon Project after coach Alberto Salazar banned Nike said on its website that the shoe, which retails at around $250, has "a built-in secret weapon".

Nike's Vaporfly shoes are making headlines for all wrong reasons for its "unfair technology" that supports athletes during sprints. Also read- Nike shuts down Oregon Project after coach Alberto Salazar banned Nike said on its website that the shoe, which retails at around $250, has "a built-in secret weapon". Also read- Quitter's day! Study reveals people are likely to give up on their New Year resolutions on January 19 Analysts say the debate over Nike's "Vaporfly" shoes gives runners an unfair technological advantage and mainly helps the world's largest athletic apparel company sell more shoes. Independent studies have concluded that the shoes, which has a curved, carbon-fibre plate embedded in a thick layer of lightweight foam, improves metabolic efficiency by 4 per cent, though that does not necessarily mean a runner will be 4 per cent faster. Nike's shoe has a 1.4-inch sole, higher the sole more the efficiency, whereas other shoes have a sole thickness of 1 inch. A working group at governing body world athletics has been examining for months on what to do about the hyper-advanced footwear, used by elite runners including Kenya's Eliud Kipchoge and Brigid Kosgei who gave stunning performances last year. World Athletics' current rules say running shoes can't provide any "unfair assistance or advantage" and they should be available for all. Laurues Award nominee Eliud Kipchoge broke the record in the Berlin Marathon in 2018. He wore the Vaporfly prototype. “I run to prove to any human in this universe that there are no limitations.” @EliudKipchoge A crazy dream come true — Eliud Kipchoge becomes the world’s first to run a marathon in under two hours. #justdoit pic.twitter.com/12mVz1wbpd — Nike (@Nike) October 12, 2019 × Brigid Kosgei beat the previous record by just 81 seconds in 2019. She ran in the Chicago marathon. She was clocked at 2 hours, 14 minutes and 4 seconds. She wore the infamous Vaporfly. If it hasn’t been done before, it’s yours to claim. Brigid Kosgei becomes the fastest woman in history to run 26.2 miles with a time of 2:14:04. Congrats on your World Record and second consecutive victory at the Bank of America Chicago Marathon. #justdoit #chicagomarathon pic.twitter.com/7wQYJvCRWx — Nike (@Nike) October 13, 2019 × Shares in the Oregon-based firm were up 0.5 per cent, while those in rivals Under Armor and Skechers USA gained about 1.5 per cent. Japan's Asics corp. earlier closed up 2.5 per cent.

Unfair advantage? Nike's 'Vaporfly' shoes worn by top runners risk ban

Kenya's Brigid Kosgei ran the fastest half-marathon ever by a woman on Sunday, winning the Great North Run in a time of one hour, four minutes and 28 seconds.

Her time was 23 seconds quicker than the previous best of 1:04.51 by fellow Kenyan Joyciline Jepkosgei, set in 2017 but the course is not eligible for records.

Mo Farah won the men's elite race for a record sixth successive year as he warms up to&nbsp;defend his Chicago Marathon title next month.

Four-time Olympic champion Farah, 36, was pushed hard by Tamirat Tola, but proved too strong in the final mile for the Ethiopian, to finish the 13.1-mile course in 59min 7sec. Abdi Nageeye of the Netherlands was third.

Farah is aiming to establish himself among the world's elite marathon runners.

He claimed his first marathon title last year when he won in Chicago in a time of 2:05.11-- a European record.

Kenya's Brigid Kosgei ran the fastest half-marathon ever by a woman on Sunday, winning the Great North Run in a time of one hour, four minutes and 28 seconds. Her time was 23 seconds quicker than the previous best of 1:04.

Kenya's Brigid Kosgei ran the fastest half-marathon ever by a woman on Sunday, winning the Great North Run in a time of one hour, four minutes and 28 seconds. Her time was 23 seconds quicker than the previous best of 1:04.51 by fellow Kenyan Joyciline Jepkosgei, set in 2017 but the course is not eligible for records. Mo Farah won the men's elite race for a record sixth successive year as he warms up to defend his Chicago Marathon title next month. Four-time Olympic champion Farah, 36, was pushed hard by Tamirat Tola, but proved too strong in the final mile for the Ethiopian, to finish the 13.1-mile course in 59min 7sec. Abdi Nageeye of the Netherlands was third. Farah is aiming to establish himself among the world's elite marathon runners. He claimed his first marathon title last year when he won in Chicago in a time of 2:05.11-- a European record.

Kenya's Brigid Kosgei runs fastest-ever women's half-marathon

Over 40,000 contestants take to streets for 2019 London Marathon

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