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How to run 50% faster without external energy (2020)

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Re: How to run 50% faster without external energy (2020)

#51

Post by make3 »

tech_ken wrote: post #31

ITT: people who read scientific articles by skimming the pictures. The proposal isn't "springs under your feet" it's "springs along your legs that you load while your leg is in the air". The point is that by loading the spring with a leg which is otherwise not doing anything you're able to increase the overall energy output of the body. Their Fig. 2 shows exactly the (theoretical) difference between the naive "jumpin…

yeah also bike speeds keeps mechanical difficulty optimal, vs having to move your legs very fast at minimal difficulty

Re: How to run 50% faster without external energy (2020)

#52

Post by jph »

criddell wrote: post #46
hinkley wrote: post #37

Earlier quoted context omitted.

One of the reason pro cyclists clip their feet to their pedals is so they can load the “other” leg through the back of the stroke, and across the bottom as well by pulling back on the loaded leg. Come unclipped in a sprint and you’re fucked. Sounds like this is the same thing for running.

Have you ever used an elliptical chainring?

Yes, elliptical chainrings are great IMHO, especially if you train for elliptical continual exertion. Added 2km to my speed.

Re: How to run 50% faster without external energy (2020)

#53

Post by onetimeuse92304 »

rottencupcakes wrote: post #48
hinkley wrote: post #37

Earlier quoted context omitted.

One of the reason pro cyclists clip their feet to their pedals is so they can load the “other” leg through the back of the stroke, and across the bottom as well by pulling back on the loaded leg. Come unclipped in a sprint and you’re fucked. Sounds like this is the same thing for running.

The idea that your muscles have enough strength on the upstroke to contribute meaningfully to cycling is actually a bit of a misunderstanding. Your leg muscles for lifting are much much much weaker than your leg muscles for pushing - they're designed to only lift up the weight of your leg and not much more. The main advantage of the clips is to keep your leg in contact with the pedal throughout the cycle and make sur…

Any muscle is trainable. To some extent. If you cycle enough, you will develop muscles necessary to pull the pedal up.

Additionally, the goal isn't to double your power output. It is to be better than the other cyclist. Even by just a tiny bit.

I personally think that clipping the feet helps more with left right stability. Also, if you are pulling with one leg, you can potentially push more with the other. Normally you can only push as much as you weight, but with the other leg clipped you can push your weight plus the force you use to pull the other pedal.

Re: How to run 50% faster without external energy (2020)

#54

Post by Ericson2314 »

tech_ken wrote: post #31

ITT: people who read scientific articles by skimming the pictures. The proposal isn't "springs under your feet" it's "springs along your legs that you load while your leg is in the air". The point is that by loading the spring with a leg which is otherwise not doing anything you're able to increase the overall energy output of the body. Their Fig. 2 shows exactly the (theoretical) difference between the naive "jumpin…

Reverse running, that sure sounds like a lot of tripping and falling!

The power leg and the stability/control leg being opposite not the same really boggles my mind.

Re: How to run 50% faster without external energy (2020)

#55

Post by scotty79 »

helsinkiandrew wrote: post #8

Haven’t similar devices been around for ages https://en.m.wikipedia.org/wiki/Jumping_stilts

I think it's about having you being hanged in harness on the hips while you are running. This way you don't have to extend energy for your muscles to keep you upright. Springs do that. Then all the energy generated by your muscles can go towards creating motion.

Re: How to run 50% faster without external energy (2020)

#56

Post by Ericson2314 »

Ericson2314 wrote: post #54
tech_ken wrote: post #31

ITT: people who read scientific articles by skimming the pictures. The proposal isn't "springs under your feet" it's "springs along your legs that you load while your leg is in the air". The point is that by loading the spring with a leg which is otherwise not doing anything you're able to increase the overall energy output of the body. Their Fig. 2 shows exactly the (theoretical) difference between the naive "jumpin…

Reverse running, that sure sounds like a lot of tripping and falling! The power leg and the stability/control leg being opposite not the same really boggles my mind.

If we're getting really transhuman with this, assuming the brain is more malleable than the leg, I think it would actually be easier physiologically to run backwards than forwards with this.

Real shape rotators will know what I mean ;)

Re: How to run 50% faster without external energy (2020)

#57

Post by Someone »

hinkley wrote: post #37
tech_ken wrote: post #31

ITT: people who read scientific articles by skimming the pictures. The proposal isn't "springs under your feet" it's "springs along your legs that you load while your leg is in the air". The point is that by loading the spring with a leg which is otherwise not doing anything you're able to increase the overall energy output of the body. Their Fig. 2 shows exactly the (theoretical) difference between the naive "jumpin…

One of the reason pro cyclists clip their feet to their pedals is so they can load the “other” leg through the back of the stroke, and across the bottom as well by pulling back on the loaded leg. Come unclipped in a sprint and you’re fucked. Sounds like this is the same thing for running.

> Come unclipped in a sprint and you’re fucked.

Not necessarily :-)

See https://www.eurosport.com/cycling/famenne-ardenne-classic/20... for an example where that happened and the sprinter still won.

Re: How to run 50% faster without external energy (2020)

#59

Post by [deleted] »

nvy wrote: post #41
checkyoursudo wrote: post #25

Naruto run. Don't even need to read the article. "Without external energy (but with external device attached)" is ... a bit disappointing. At what point does it cease to be running and start to be run-assisted catapulting? Or catapult-assisted running? It seems like more than just running .

I googled "Naruto run" and it's just... Anime characters running with their arms outstretched behind them. That's not what TFA is discussing, you should probably read it.

[deleted]

Re: How to run 50% faster without external energy (2020)

#60

Post by jc2jc »

nvy wrote: post #41
checkyoursudo wrote: post #25

Naruto run. Don't even need to read the article. "Without external energy (but with external device attached)" is ... a bit disappointing. At what point does it cease to be running and start to be run-assisted catapulting? Or catapult-assisted running? It seems like more than just running .

I googled "Naruto run" and it's just... Anime characters running with their arms outstretched behind them. That's not what TFA is discussing, you should probably read it.

The person you are replying to was (probably) making a joke. Naruto run is an old meme. I think they get the idea of what the article is describing going off of the full comment.
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