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Calories adjust by weight on PM3/PM4
Posted: October 9th, 2010, 11:47 pm
by rlddikeman
While I can (and do) calculate my more accurate calorie counts using the web site, it would be nice if if I could enter my weight on the PM3 and it would store on my log card and accurately calculate cals while I am rowing based on weight/height or whatever instead of assuming a certain weight man
Re: Calories adjust by weight on PM3/PM4
Posted: October 10th, 2010, 1:07 pm
by jamesg
If you keep the rating low your weight won't make much difference. At 20 the max body speed is of the order of 1m/s with full length strokes, so the kinetic energy lost at stroke ends is small. In any case the C2 calcs consider us as fuel cells with 25% efficiency (i.e 1 unit of external work implies 3 units of heat in us) and also gives us 300kCal/h free. How accurate are these?
The erg is for getting fit, and this is what it does, if we get on and pull long and hard, as most of us have seen. To imagine anything else is I think somewhat illusory, so can only lead to delusion. Maybe a ½M a day wouldn't leave us enough time to get our knees under the table tho'.
Re: Calories adjust by weight on PM3/PM4
Posted: October 10th, 2010, 3:48 pm
by Citroen
rlddikeman wrote:While I can (and do) calculate my more accurate calorie counts using the web site, it would be nice if if I could enter my weight on the PM3 and it would store on my log card and accurately calculate cals while I am rowing based on weight/height or whatever instead of assuming a certain weight man
It's impossible. Even if you were the exact same weight/height/build/fat percentage as me then there's nothing to say that your metabolic rate is the same as mine. The calories displayed on a PM3/PM4 are are a rough estimate, nothing more. Even a weight adjusted formula would be an estimate.
Re: Calories adjust by weight on PM3/PM4
Posted: October 10th, 2010, 4:22 pm
by rlddikeman
Gosh folks, I was just asking since this available via the C2 website. I realize it's an estimate on their website. The cals on the pm3 isn't a valid estimate for a smaller woman. It's a feature request not a complaint
Re: Calories adjust by weight on PM3/PM4
Posted: October 10th, 2010, 4:44 pm
by Citroen
rlddikeman wrote:Gosh folks, I was just asking since this available via the C2 website. I realize it's an estimate on their website. The cals on the pm3 isn't a valid estimate for a smaller woman. It's a feature request not a complaint
The cals on a pm3 isn't a valid estimate for anyone, nor is the stuff on the website.