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Portable replacement for a $60k VO2 Max machine

instructables.com

71–80 of 112 posts

Re: Portable replacement for a $60k VO2 Max machine

#71

Sometimes I wonder if the way to bypass the insane regulations around medical devices is to just publish them online for anyone to build themselves. Sure I won't have the minutes detail of million dollar medical equipment, but maybe I don't need all that precision, or maybe that's better than having no access at all to the measurements at all

I think it's less about regulation and more about liability. Giving inaccurate medical information can be pretty dangerous.

Re: Portable replacement for a $60k VO2 Max machine

#72
post #29

Earlier quoted context omitted.

At least in the US, there's a fair amount of immigrant medical professionals who have the training, often the experience, but not the licensing.

What’s getting in the way of their american licensing ?

The AMA.

Re: Portable replacement for a $60k VO2 Max machine

#73
I thought the DIY air-quality monitor earlier today was neat but this blows me away.

Some serious next-level hardware hackers this generation.

I get worried everyone is turning into dumb iphone+app users but this advanced creation stuff restores faith.

Re: Portable replacement for a $60k VO2 Max machine

#74
post #21

Earlier quoted context omitted.

Just a note, it's probably "Coeur d'Alene"

Yep. Sorry for transposing a few letters. It’s a tremendously beautiful and friendly place. I’d love to go back one of these days.

:) wasn't trying to criticize. Sorry if it came off that way.

Re: Portable replacement for a $60k VO2 Max machine

#75
post #30

Earlier quoted context omitted.

Why can't ultrasounds produce 3D?

They can, but since the data is very noisy the 3D reconstruction is usually not very good. If you actually need to measure something, analysing the 2D images is much more precise. EDIT: Also, it's really hard to visualise density in a 3D view.

I just don't see what harm there is in making unregulated devices even if they're hard to interpret and less acurate.

Re: Portable replacement for a $60k VO2 Max machine

#76

This is really great. For those who aren't familiar with what these machines can do, the calculation of an athlete's Vo2 max really isn't all that useful. However, a breakdown of the fat and carbohydrate calories burned at various efforts can be incredibly useful for helping an athlete learn how to fuel correctly for performance over distance. I'm not a physiologist or physician (and I'm sure what I'm about to say ma…

could you kindly elaborate on why Vo2 max isn't useful for an athlete?

naively, it seems measuring oxygen consumption would be useful.

Re: Portable replacement for a $60k VO2 Max machine

#77
post #21

This is really great. For those who aren't familiar with what these machines can do, the calculation of an athlete's Vo2 max really isn't all that useful. However, a breakdown of the fat and carbohydrate calories burned at various efforts can be incredibly useful for helping an athlete learn how to fuel correctly for performance over distance. I'm not a physiologist or physician (and I'm sure what I'm about to say ma…

Just a note, it's probably "Coeur d'Alene"

Unless you're dealing with mail, in which case you're more likely to succeed with "Coeur D Alene". Our city name apparently isn't sufficiently American in some contexts.

Re: Portable replacement for a $60k VO2 Max machine

#78
post #19

This is really great. For those who aren't familiar with what these machines can do, the calculation of an athlete's Vo2 max really isn't all that useful. However, a breakdown of the fat and carbohydrate calories burned at various efforts can be incredibly useful for helping an athlete learn how to fuel correctly for performance over distance. I'm not a physiologist or physician (and I'm sure what I'm about to say ma…

A friend of mine does keto and after running a marathon reported that they did not experience "the wall". Presumably this is because they were using fat to begin with, not after mile 15 or whatever.

For those interested, Jeff Volek's team published a study in 2016, "Metabolic characteristics of keto-adapted ultra-endurance runners" [1] that compared fax oxidation. One of the "fat adapted" participants Zach Kibbter, an ultra-marathon record holder, posted a personal writeup that included a table of his fat usage at various VO2 Maxes (a ridiculous 98% fat usage at 75% VO2max and 76% even at 84% of VO2max!)[2]

[1] https://www.sciencedirect.com/science/article/pii/S002604951...

[2] https://web.archive.org/web/20201111190720/https://zachbitte...

Re: Portable replacement for a $60k VO2 Max machine

#80
post #16

Earlier quoted context omitted.

The person who wrote the article must've had a specific audience in mind, so they chose one title. The person who posted the article here must've had HN's audience in mind, so they chose a different title. Titles convey ultra-dense summary of the content, so there can be many titles appropriate for any given article. The purpose of the title is to attract _attention_ of the audience who the title-writer thinks would…

The OP here chose to use a title with an astounding monetary figure in it. I was baited. I would not have read the article if it had the original title. Strict adherence to the guidelines would have saved me here. Regarding your post, I am curious if "Google" was removed by yourself(and later changed your mind) or the moderators?

After reading through some of the context[1], I'm in favor of being consistent with de-clickbaiting titles. This title should be changed to "Accurate VO2 Max for Zwift and Strava" as it is a much better summary of the article (the article does mention beating $60k machinery, but does not seem to suggest being a portable replacement for that specific machinery like the title)

[1] https://news.ycombinator.com/item?id=25093563 To summarize the contextual thread, the title of a post was de-clickbaited against the OP's intentions. In my opinion, for the better.

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