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littlebluedog
littlebluedog
Tim
Wednesday, May 4th, 2011 09:38 am
calorie inflation

6CommentReply

circumambulate
circumambulate
Circumambulate
Wednesday, May 4th, 2011 05:40 pm (UTC)

you're being bamboozled by a shiny number - those numbers are purely estimates based on an average body model and the amount of work performed. They don't take into account gender, size, body composition, etc., that all drastically impact actually calorie burn.

Hopefully the number obtained on the same machine over time should be a good indicator of whether you've worked more or less, but those probably aren't particularly comparable between different machines, or even different versions of the same machine if they've changed their algorithm. I wouldn't be at all surprised, as you suggest, that machine manufacturers tweak that algorithm towards a postitive outcome for the user so that they're drawn to that machine.


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littlebluedog
littlebluedog
Tim
Wednesday, May 4th, 2011 06:00 pm (UTC)

Sure they're estimates, but achieving the same output consistently with the same work input gives you scientific precision even if that output value range is not scientifically accurate. This is what I'm basing the aberrations on.

I'm sure the machine manufacturers make the number tweakable, but I'm guessing they don't necessarily tweak it themselves--rather, I think the gyms do it, like you said, to give a user a positive outcome.


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circumambulate
circumambulate
Circumambulate
Wednesday, May 4th, 2011 06:29 pm (UTC)

But you can only get scientific precision if the inputs are processed the same way every time - my point was that you can probably only build trends based on the output of a single machine - not really across multiple machines, and maybe not even from the same machine over time if these things are updated during field service.

I actually wouldn't be surprised if manufacturers did some playing of the numbers on their own - I would imagine that competition for gym floor space is quite intense, so anything that pulls customers to a specific machine over another would ultimtately result in higher sales to the manufacturer.


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