There are no "springs" in the shoe; and yes, Tucker's hubris and refusal to be infallible type attitude makes him a borderline retard.
MarathonMind wrote:
Well then so is Ross Tucker 'cuz he agrees with me.
http://sportsscientists.com/20...edibility/
The carbon fiber and foam behave just like springs- they return almost all of the compressive force applied to them. They are indeed springs, just not made of steel as one typically thinks of one.
CO= hr x sv wrote:There are no "springs" in the shoe...
Would tape be banned too?
Shoes Bad, MMMKAY wrote:
Let's just ban all shoes that have unfair cushioning in them. Barefoot only.
Not really. Animals that run faster than us use springs so we're essentially trying to alter our conformation to duplicate their advantage. I
Shshhdnnd wrote:
What science demonstrates that running on springs would be beneficial? Basically the runner and his or her shoes is a closed energy loop. Without an external source of energy, shoes cannot create extra energy for the runner.
So if the spring returns more energy, it also requires the runner to produce more energy.
I am no expert in biomechanics or physics, although I do have an engineering degree, so I would love to understand more about how a spring would work to "create" energy. Not trolling, I really am interested.
You oversimplified wrote:Shshhdnnd wrote:Not really. Animals that run faster than us use springs so we're essentially trying to alter our conformation to duplicate their advantage. I
What science demonstrates that running on springs would be beneficial? Basically the runner and his or her shoes is a closed energy loop. Without an external source of energy, shoes cannot create extra energy for the runner.
So if the spring returns more energy, it also requires the runner to produce more energy.
These Nike shoes have yet to show an improvement in the real world. The Adios boosts have performed in the real world but I'm OK with them.
MarathonMind wrote:
Such hypocritical BS. So if it's a given that doped up runners compete with an unfair advantage then it's also a given that high energy return shoes are also conferring an advantage. Whatever the exact increase in energy return the new carbon fiber/"magic" foam aided shoes have over older shoes from pre-Adidas Boost, there is no denying that it has been increasing with technological advances and it is quantifiable and it is significant (Nike says it's as high as 85%). So let's just wipe all the POST 2005 records off the books until the high energy returns shoes are also banned. Seems fair. Who knows what Clayton, Hill, Shorter, Rodgers et al could have run with these shoes?
Drop a pogo stick on end and a broomstick. Compare the two.
sdfgdffgd wrote:You oversimplified wrote:I am no expert in biomechanics or physics, although I do have an engineering degree, so I would love to understand more about how a spring would work to "create" energy. Not trolling, I really am interested.Shshhdnnd wrote:Not really. Animals that run faster than us use springs so we're essentially trying to alter our conformation to duplicate their advantage. I
What science demonstrates that running on springs would be beneficial? Basically the runner and his or her shoes is a closed energy loop. Without an external source of energy, shoes cannot create extra energy for the runner.
So if the spring returns more energy, it also requires the runner to produce more energy.
If you're a mechanical engineer or an engineer who understood dynamics fairly well, draw a free body diagram of the whole foot as it contacts the ground. This will show you that all this "spring" nonsense about saving energy is more of a publicity thing than working technology.
sdfgdffgd wrote:You oversimplified wrote:I am no expert in biomechanics or physics, although I do have an engineering degree, so I would love to understand more about how a spring would work to "create" energy. Not trolling, I really am interested.Shshhdnnd wrote:Not really. Animals that run faster than us use springs so we're essentially trying to alter our conformation to duplicate their advantage. I
What science demonstrates that running on springs would be beneficial? Basically the runner and his or her shoes is a closed energy loop. Without an external source of energy, shoes cannot create extra energy for the runner.
So if the spring returns more energy, it also requires the runner to produce more energy.
so are asphalt and concrete, the difference is they bounce back up a lot quicker.
MarathonMind wrote:CO= hr x sv wrote:There are no "springs" in the shoe...The carbon fiber and foam behave just like springs- they return almost all of the compressive force applied to them. They are indeed springs, just not made of steel as one typically thinks of one.
It's not necessarily energy return as the big brands (mostly Adidas) claim, as much as it is reduced energy loss. The Boost doesn't "return" any energy, the runner just loses less energy.
Shshhdnnd wrote:
What science demonstrates that running on springs would be beneficial? Basically the runner and his or her shoes is a closed energy loop. Without an external source of energy, shoes cannot create extra energy for the runner.
So if the spring returns more energy, it also requires the runner to produce more energy.
Classic Magicians 🎩 trick. Hey everyone, look over here at this shoe. Makes them miss out on the Wind blocking draft inducing TESLA.
Whistleblower wrote:
I am a industry insider.
The foam itself cannot give you MORE energy than you put in. It the higher energy return of the foam the more you get back. It is a form of spring in pure engineering terms.
The Carbon fibre leaf type spring hidden inside the Nike shoes works similar to Pistorious's foot. I believe it works in a couple of ways, directional propulsive energy return, and by changing the human biomechanics. The propulsion was a word commonly used in early Nike PR that has since been removed due to the obvious negative connotations. Plenty of google evidence from
Nike spokespeople who mentioned the propulsive benefit then after the initial backlash changed their story. The carbon leaf spring potentially lengthens the stride similar to Pistorious at the end of a 400m once he got up to steady state speed. It also potentially minimises bending at the inefficient metatarsal joint transferring more load to the more efficient Achilles and valve artificially changing the biomechanics of the runner. These changes explain why there have been several Injuries in the shoes and complaints about sore legs.
However what everyone is missing is the drafting effect of the big füçk off TESLA with timing board that has been specifically told to stay 5m in front of the runners.
You can argue about the shoes but this whole thing is irrelevant unless they get rid of the pace car, and the jump in pace makers.