Why 31 Nike Air Max 90 Dames Roze millimeters? That’s a fairly common midsole height for previous models.Until 2016, marathon racing shoes Nike Air Max 720 Femme were constructed from thin slabs of rubber. In 1960, an Ethiopian runner named Abebe Bikila even managed to win the Olympic Marathon in his bare feet. Everyone understood that less was more; you ran more efficiently when you carried minimal weight on your feet.In Nike Air VaporMax Donne 1968, when shopping for the shoes that carried me to victory in that year’s Nike Air Max 90 Damen Boston Marathon, I had only two criteria. They had to be light and thin, and they had to be cheap. I was still in college. I paid $9.95 for my lucky shoes — a pair of Onitsuka Tiger TG-4 Nike Dunk Sky High Mujer Marathons.Little changed in the footwear for elite marathoners in Nike Internationalist Womens the next five decades, until Nike introduced its Vaporfly 4% shoes in 2016. These shoes contained a new midsole foam, Pebax, so lightweight that it is www.raheembakare.co.uk almost like running barefoot.

Pebax also delivers 30 percent more energy return than the foams used in most Nike Air Max 90 Hombre Azul running shoes since the 1970s. This allows Pebax to function almost like leg muscles, Nike Air Max 90 Mujer but without the fatigue that can debilitate the legs after 20 miles.The Nike shoes also include a carbon fiber plate in the midsole. This plate might increase energy return, or www.azurparebrise.fr it might improve foot function during the running stride. Either way, the Nike Internationalist Womens plate is prominently mentioned in Nike’s patent application.Nike-supported experts soon published papers in scientific journals showing that the Vaporfly shoes Nike Air Max 720 Femme could improve marathon times up to 3 percent. That sounds small until you consider it is often Nike Air Max 95 Homme the difference between a gold medal and a quickly forgotten fifth-place finish.

The results were so astounding, in fact, that some considered them as just another example of Nike sports marketing.“I was skeptical at first, but then came the second and third Nike Air Max 90 Dames and fourth report,” said Ross Tucker of the Science of Sport website. “I had to www.robsdriessen.nl change my skepticism. Now I think the effect is real, and large.”A 2018 New York Times data analysis based on public race results uploaded to Strava, the athlete-tracking and networking www.joergbehlen.de company, found that runners in Vaporflys ran 3 to 4 percent faster Adidas ZX Flux Donne than similar runners wearing other shoes. There probably isn’t another marathoner who could break two hours in the shoes he wore last weekend.