Saving weight is also an urgent task. Studies show that every 100 grams (about 3.5 ounces) of shoes are shaved and economically running is about 1%. Hunting is always a lighter foam, a way to cut unnecessary materials from the midsole, plate and outsole. The stripper's upper also plays the role of a minimal heel collar, thin tongue and almost no mesh.
Whether you are targeting less than 3 3-hour marathons, the temptation of promised performance growth is strong. However, the effectiveness of carbon shoes varies from shoe to shoe to runner.
Research shows that while some runners have experienced economic improvements through new footwear technology, others have the least profit or even performance declines. Various biomechanics, running speed and adaptive shoe design play an important role. The key is to find the shoes you respond to.
The mixed results mean we don't see any competitor claims that competes with Nike's initial 4% stamps. so far.
PUMA says the new Fast-R Nitro Elite 3 not only unlocks the efficiency gain, but now outperforms any other shoe on the shelf. But this is also a running shoe all Runner responded.
It is pasted with classic super footwear recipes: high ammunition, nitrogen-infused foam, full-length carbon plate, incredibly lightweight upper and a very thin layer of outsole rubber. But in some ways, it cuts with a decoupled midsole, steep heel, saving weight and extending carbon plates, thereby cutting out unique shapes in some ways and giving extra leverage on the front lips.
The changes from PUMA Fast-R2 to Fast-R3 are subtle, but Puma promises they will make a difference. Zeroing to unlock details that improve efficiency requires a new design approach inspired by Formula One digital prototype. Today, tweaks to F1 cars are usually almost modeled, not physical. PUMA essentially adopts a similar digital modeling approach to developing its running shoes.
“We recorded 15 athletes’ footsteps strikes in 3D, then used a computer to average them out and turned them into one,” said Todd Falker, product head of PUMA Run. “We can then do digital foot strikes and observe how all runners’ feet interact with digital shoes.”
Romain Girard, Vice President of Innovation at PUMA, added more. "We copied the runner's behavior in the 3D world, but the copying is 100% accurate. In computer simulations, shoes behave exactly the same in reality."
This technology not only allows designers to identify a portion of unused shoes, for example, 5.2% of midsole foam has no effect. So it was cut off. However, it enables designers to "test" 100 seconds of different design arrangements without having to go through a long process to create a large number of physical prototypes to retest runners.
“Usually you need to build a plate, a second plate, a third plate, and then test it,” Gillard said. “But we were able to test hundreds of plates and configurations digitally until we had a couple that looked better and then we had to make a decision.”