03-09-2006, 03:24 AM | #11 |
Join Date: Aug 2005
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Re: Calculating Weight in Relation to Height
An average BMI 25 would be already on the verge of being overweight.
Normal BMI values (by the book) are 19-24 for women, 20-25 for men. Here is a very good table by the way. Another very quick (but also very rough) way to calculate weight would be broca's formula: "optimal weight" weight(in kg) = height (cm) - 100 or modified broca: "ideal weight" weight(in kg) = height (cm) - 100 -10%.
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03-09-2006, 06:33 AM | #12 | |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Calculating Weight in Relation to Height
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03-09-2006, 06:55 AM | #13 | |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Calculating Weight in Relation to Height
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There was also that Norwegian survey I've seen described in a couple of places (1.8 million subjects followed over 10 years), which found that optimal longevity went with BMI 25-30. BMI 18-20 gave about the same expected lifespan as BMI 35! Presumably "overweight" is meant to be "too heavy for optimal health"—but optima should be based on empirical data rather than cultural biases, and that's a pretty big empirical result. |
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03-09-2006, 10:38 AM | #14 | |
Join Date: Jan 2005
Location: Stuttgart, Germany
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Re: Calculating Weight in Relation to Height
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Not even to mention that muscle, and a certain level of physical/weight training is very beneficial, but it may increase BMI, since BMI doesn't say anything about body fat %. Norwegians, as a whole, tend to have large blocky bone structures, which means without any further detail, they'll have a BMI a couple of points above average with the same level of body fat. There's also certain biological adaptations in people from Northern climates, see the Eskimos/Inuits, which give populations in those climates the ability to have higher body fat %, (as blubber protection from the cold? *grin*), with less detrimental health effects. Results from people in those cold climates cannot be directly ported into population groups in temperate climates.
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03-10-2006, 01:59 AM | #15 | ||
Join Date: Aug 2005
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Re: Calculating Weight in Relation to Height
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I am talking about averages, not single individuals- in average people with BMI 25+ are a little heavy set (don't anyone take this personal). While it is true that high muscle mass will give wrong results in individual cases, this is not relevant for an average number. BMI is not meant to judge individuals with any precision but groups of individuals. See here for a backup of my BMI 25+ claim: http://www.ajcn.org/cgi/reprint/72/5/1074 Quote:
Those people would have the overweight disadvantage in gurps terms. Anyway- the key to getting recommendations is: you can't rely on a single study, especially when it wasn't a whole country being observed but a few spots. What are the environmental circumstances in the picked places of this study? What does "optimal" mean here- do they live longer than the others in that place, or do they live longer than the average in the country? (and so on). BMI was not created out of cultural biases. Disease risk for type 2 diabetes, hypertension, and CVD all increase with BMIs above the 25 threshhold.
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I'm an English teacher now, so the most excitement I see these days is a dangling participle. -safisher |
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03-10-2006, 03:46 AM | #16 | |
Join Date: Jan 2005
Location: Gothenburg, Sweden
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Re: Calculating Weight in Relation to Height
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As for BMI 15 - well, I've been there and done that. In my youth (when I was about 18) I weighed about 105 lbs. I'm 6' tall. I looked like a poster child for the new Biafra diet-plan... Today I'm still 6' tall but weigh about 200 lbs., so a little overweight, but I'd rather be this way.
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03-10-2006, 04:47 AM | #17 | |
Join Date: Aug 2005
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Re: Calculating Weight in Relation to Height
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Not to say that below 20 isn't bad.. just that there are other risk factors. And yes, being slightly overweight is probably healthier overall than being slightly underweight.. but few people are in first world countries- thats why there isn't so much medical public information in that direction.
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I'm an English teacher now, so the most excitement I see these days is a dangling participle. -safisher |
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03-10-2006, 06:55 AM | #18 | |
Join Date: Jan 2005
Location: Gothenburg, Sweden
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Re: Calculating Weight in Relation to Height
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“When you arise in the morning think of what a privilege it is to be alive, to think, to enjoy, to love ...” Marcus Aurelius |
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05-15-2019, 01:11 PM | #19 |
Join Date: Oct 2007
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Re: Calculating Weight in Relation to Height
er how do I input that into my comps calculator? (particuarly "cubing" a number)
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05-15-2019, 01:28 PM | #20 |
Join Date: Jun 2005
Location: Lawrence, KS
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Re: Calculating Weight in Relation to Height
Is it a scientific calculator, or does it just add, subtract, multiply, and divide? And do you have Excel or another spreadsheet as an option?
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