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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)

#131

Post by dmos62 »

moron4hire wrote: post #109
mikestew wrote: post #36

Earlier quoted context omitted.

Mmmm, not quite. The ones you and I can buy have a single plate, and stack height of 36mm. The ban was for shoes (like the VaporFly prototype) with >40mm stack height and/or multiple plates. Not that this article clears the matter a whole lot, but there is more information (sorry, couldn't find a succinct article on the topic): https://www.cbsnews.com/news/nike-vaporfly-running-sneaker-n... I've used them (as a ~3:00…

I wonder if that would do anything for my plantar fascitis... I made a mistake in shoe choice for a vacation one year, before I knew how much my wife absolutely insists on walking at least 10 miles a day. That was 8 years ago and I still have pretty severe pain almost every morning.

Take this with a bag of salt, but I've heard people get notable improvements in joint, feet, leg health from switching to barefoot shoes. They also tend to be extremely comfortable. I've been using them exclusively ~5 years and ran a half-marathon in them. For what it's worth, a physical therapist told me my feet are remarkably muscular. I like the UK manufacturer Freet, btw.

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

#132

Post by planaerfasci »

moron4hire wrote: post #109
mikestew wrote: post #36

Earlier quoted context omitted.

Mmmm, not quite. The ones you and I can buy have a single plate, and stack height of 36mm. The ban was for shoes (like the VaporFly prototype) with >40mm stack height and/or multiple plates. Not that this article clears the matter a whole lot, but there is more information (sorry, couldn't find a succinct article on the topic): https://www.cbsnews.com/news/nike-vaporfly-running-sneaker-n... I've used them (as a ~3:00…

I wonder if that would do anything for my plantar fascitis... I made a mistake in shoe choice for a vacation one year, before I knew how much my wife absolutely insists on walking at least 10 miles a day. That was 8 years ago and I still have pretty severe pain almost every morning.

[dead]

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

#133

Post by hinkley »

jackmott42 wrote: post #72
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.

This is false, even cyclists who think they pull up and pull back do not, and it is less efficient to do so. However it is a VERY common misconception that you should do this.

When the only American who won the Tour de France without drugs tells people to do something, a lot of people are going to do it.

Anyway, I can't find any of these so-called studies that admits to knowing what a sprinter is let alone a green jersey, so I'm going to keep my eye out for less flawed studies.

In fact, get me one by a team medic or physiologist, and then we can talk. Until then it's nerds in coats coatsplaining things to people actually doing the work.

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

#134

Post by ck2 »

303uru wrote: post #66
fwip wrote: post #12

Earlier quoted context omitted.

Presumably there are areas/applications where "running" is important - otherwise we can just use a bicycle.

Historically, human survival. No other animal can cover ground the way we can. We've evolved to be highly efficient, one example; we cool ourselves better than any other animal we can maintain a fairly high power output almost indefinitely due to sweating.

Pronghorns would like a word.

Not only could they race an entire marathon, they would beat those inline-skaters. 30mph for hours and 150 miles in some journeys.

They evolved a different cooling system than sweating.

https://journals.biologists.com/jeb/article/211/5/749/18118/...

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

#135

Post by jraby3 »

moron4hire wrote: post #109
mikestew wrote: post #36

Earlier quoted context omitted.

Mmmm, not quite. The ones you and I can buy have a single plate, and stack height of 36mm. The ban was for shoes (like the VaporFly prototype) with >40mm stack height and/or multiple plates. Not that this article clears the matter a whole lot, but there is more information (sorry, couldn't find a succinct article on the topic): https://www.cbsnews.com/news/nike-vaporfly-running-sneaker-n... I've used them (as a ~3:00…

I wonder if that would do anything for my plantar fascitis... I made a mistake in shoe choice for a vacation one year, before I knew how much my wife absolutely insists on walking at least 10 miles a day. That was 8 years ago and I still have pretty severe pain almost every morning.

I had it for years, even had to get cortisone shots in the bottom of my feet.

The only solution that worked for me was stretching. When you are standing on a step, let your heel hang down as low as possible one foot at a time. Do this for both feet and do it with straight legs and bent knees multiple times a day. It only takes about a minute and does an amazing job of curing plantar.

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

#136

Post by [deleted] »

dmos62 wrote: post #131
moron4hire wrote: post #109

Earlier quoted context omitted.

I wonder if that would do anything for my plantar fascitis... I made a mistake in shoe choice for a vacation one year, before I knew how much my wife absolutely insists on walking at least 10 miles a day. That was 8 years ago and I still have pretty severe pain almost every morning.

Take this with a bag of salt, but I've heard people get notable improvements in joint, feet, leg health from switching to barefoot shoes. They also tend to be extremely comfortable. I've been using them exclusively ~5 years and ran a half-marathon in them. For what it's worth, a physical therapist told me my feet are remarkably muscular. I like the UK manufacturer Freet, btw.

[deleted]

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

#139

Post by namelosw »

asoneth wrote: post #64

Their model seems to predict a theoretical top speed of 18-20.9m/s (or 40.0-46.8mph, 64.8-75.2kph): https://www.science.org/doi/10.1126/sciadv.aay1950#F2 As much as I want to imagine people chasing down cheetahs, without empirical testing I have to admit I am skeptical of their claims.

Wow that's fast. But it sounds dangerous.

The last time I attempted to run at full speed after not running for years, I struggled to keep up and lost my balance. I started tilting forward slowly and eventually fell then slide on the ground for a while, resulting in multiple scratches on my face, front pelvis, etc.

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

#140

Post by ordu »

jdietrich wrote: post #120
stouset wrote: post #63

Earlier quoted context omitted.

> The idea that your muscles have enough strength on the upstroke to contribute meaningfully to cycling is actually a bit of a misunderstanding. Absolutely not, and there are plenty of easy counterexamples. If you've ever raced track, team pursuits start from a dead standstill. You have to expend a ton of force to turn a huge gear, and the contribution of the lifting leg is crucial to getting up to speed. Of course i…

>the contribution of the lifting leg is crucial to getting up to speed This might feel true, but it isn't. Buy or borrow a dual-sensing power meter (Garmin Rally, SRM X-Power etc) and you can see for yourself - there's practically no useful power in the upstroke. Toe clips or clipless pedals can extend the power stroke, but only by a few degrees at the bottom of the stroke. https://bythlon-pedal.myshopify.com/pages/t…

My cyclist's intuition says that leg clipping allows you to extort greater force on a down stroke. Without clipping the force is limited by your body weight, with it the only limit is your muscles.

Thinking about it your hands and a back leg allow you to apply a lot of downward force to your body and your lead leg can add all this force to a stroke. It doesn't matter that your hands or back leg individually are not so strong when pulling, because their efforts are combined.

In situations when you need not to extend as much force as you can, probably clips do not add much, though I do not know. I tried at some point to ride a bicycle without clips and nearly failed. My back leg tries to pull and leave a pedal.

> https://bythlon-pedal.myshopify.com/pages/the-myth-of-the-up...

They are saying that with high rpm cyclists do not pull. I can believe that, high rpm is beneficial exactly because you need to apply a relatively small force.

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