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Nike Air Presto Womens
Autor: sooo (36.5.119.---)
Datum: 11 January, 2019 02:27

If a running shoe made you 25 percent faster, would it be Nike Air Vapormax Mens fair to wear it in a race? What about 10 percent? Or 2 percent? The Nike Zoom Vaporfly 4% — a bouncy, expensive shoe released to the public one year ago — raises these questions like no shoe in recent distance running history.

Nike says the shoes are about 4 percent better than some of its best racing shoes, as Nike Air Max 98 Dames measured by how much energy runners spend when running in them. That is an astonishing claim, an efficiency improvement worth almost six minutes to a three-hour marathoner, or about eight minutes to a four-hour Nike Air Force 1 Donna marathoner.

And it may be an accurate one, according to a new analysis by The New York Times of race data from about 500,000 marathon and half marathon running times since 2014.

Using public race reports and shoe records from Strava, a fitness app that calls itself the social network for athletes, The Times found that Nike Air Vapormax Femme runners in Vaporflys ran 3 to 4 percent faster than similar runners wearing other shoes, and more than 1 percent faster than the next-fastest racing shoe.

We found that the difference was not explained by faster runners Nike Air Presto Womens choosing to wear the shoes, by runners choosing to wear them in easier races or by runners switching to Vaporflys after running more training miles. Instead, the analysis suggests that, in a race between two marathoners of the same ability, a runner wearing Vaporflys would have a real advantage over a Nike Air Vapormax Donna competitor not wearing them.

An onyx stage catches fire and three performers, silhouetted in the blaze, begin to sing from behind the flames. You can hear Kanye West’s voice, but you can’t make out his face. The first glimpse of him, poking out of the fire, is a shoe.

But not just any shoe: specifically, a white Adidas ZX Flux Donna Adidas Ultra Boost, which until this moment—the Billboard Music Awards in May 2015—has never been worn in public.

West begins his next song and leaps through the flames. He’s dressed all in black except for the two white Adidas Stan Smith Damen Ultra Boosts, which hang in the air like exclamation points. “What happens next? Every single store that had [Ultra Boosts] cleared out within the hour,” says Yu-Ming Wu, founder of shoe-culture network Sneaker News, with only a touch of hyperbole.



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