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Body Mass Index
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George



Joined: 07 Oct 2007
Posts: 249
Location: Devon

PostPosted: Thu Mar 13, 2008 11:52 am    Post subject: Body Mass Index Reply with quote

Ive been ill so have lost about a stone in weight Shocked so I thought Id check my BMI to see if I was still 'officially' overweight and I wasnt! Ive never been a stick or anything but as a general rule I eat sensibly and was exercising every day before I got ill.

This got me thinking - I had to be ill for 3 months and not eat anything like properly to get to my ' ideal' weight - is there anyone out there that is actually anywhere near the weight they should be? Ive always thought the whole BMI was a bit stupid but now Im sure it is!

you can check your BMI here http://www.nhsdirect.nhs.uk/magazine/interactive/bmi/index.aspx
if you want to that is!!!!
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Juz
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Joined: 09 Feb 2007
Posts: 1000

PostPosted: Thu Mar 13, 2008 1:22 pm    Post subject: Reply with quote

Quote:
is there anyone out there that is actually anywhere near the weight they should be?


Me: height 162 cm (or 5'4"), weight - 50 kg (or 7 stones 13 pounds)

From the site:
Quote:
Your BMI is 19.05

If your BMI is between 18.5 and 24.9 you're an ideal weight for your height.

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Last edited by Juz on Thu Mar 13, 2008 1:48 pm; edited 1 time in total
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Nathan
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Joined: 19 May 2007
Posts: 810
Location: Brighton

PostPosted: Thu Mar 13, 2008 1:37 pm    Post subject: Reply with quote

the BMI is complete bollocks

it does not take into account muscle/fat which can have a huge effect on your ideal body weight

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Reenie
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Joined: 08 Feb 2007
Posts: 3577
Location: Glasgow

PostPosted: Thu Mar 13, 2008 2:04 pm    Post subject: Reply with quote

Quite. How about 18 stone rugby players...
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Juz
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PostPosted: Thu Mar 13, 2008 2:08 pm    Post subject: Reply with quote

Working physically - which means 4 hours of non stop walking and climbing staircases with carrying in total 30-40 kgs (or 4,3 - 6,3 stones) a day - actually turned half of me into pure muscles Mr. Green
Although it does have an impact on the weight, it's not that large. With or without muscles, when I'm in good condition, 48 - 50 kgs is my usual weight. When kind of feeling down, fall to 46 - 44 but when things are better, go back to my "norm" easily enough without focusing on it.
I think the body is a self-programming system and it kind of maintains itself in the condition which is best for it.

It' s probably not about muscles / fat but rather about high and low metabolism, genes, eating habits and the system self-programming.

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GenderQuest



Joined: 12 Oct 2007
Posts: 451

PostPosted: Thu Mar 13, 2008 3:18 pm    Post subject: Reply with quote

Quote:
You are the ideal weight for your height
Your BMI is 23.02


Selecting male or female made no difference to the result.....
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Alan314159
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PostPosted: Thu Mar 13, 2008 3:58 pm    Post subject: Reply with quote

GenderQuest wrote:
Selecting male or female made no difference to the result.....

I noticed that. Nor did it change the description about being pear/apple shaped.
I wonder why they bothered putting it there at all, unless perhaps they're attempting to collect data on how many men/women are interested in their BMI.
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Juz
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PostPosted: Thu Mar 13, 2008 4:00 pm    Post subject: Reply with quote

I like this part most of all:
Quote:
To improve your health further, stop smoking, cut down on salt and high-fat foods, and limit your alcohol intake.

Any visitor to this site is seen as a smoking drunkard by default Mr. Green

P.S. I also noticed about no difference in results for males and females. Wonder why they put that sex box at all.
Theoretically, as I imagine it, men are supposed to be heavier than women of the same height, so that distinction would make sense. Strange they didn't take it into account.

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Skyler
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Joined: 08 Feb 2007
Posts: 934
Location: Canada

PostPosted: Thu Mar 13, 2008 4:57 pm    Post subject: Reply with quote

They don't take muscle mass into account at all and as far as I know that's the main reason men tend to weigh more than woman, so naturally they wouldn't make adjustments accordingly...

There's just so many reasons BMI isn't reliable
I think it tells a person a lot more to look at themselves and see how much flab is on their body than to get on a scale or calculate their BMI

And about this tip:
"Also, eat smaller portions at mealtimes and avoid snacking between meals."

Um yeah I've always heard you SHOULD snack between meals because it keeps you from getting too hungry (and then overeating at meals) and keeps your metabolism going steadily
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George



Joined: 07 Oct 2007
Posts: 249
Location: Devon

PostPosted: Thu Mar 13, 2008 6:40 pm    Post subject: Reply with quote

LOL, its not just me that thinks its rubbish then!

Ideal weight has to have much more to do with fat/muscle ratio -interesting that changing the gender didnt have any effect though Confused Cant believe I didnt try that Laughing
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Juz
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PostPosted: Thu Mar 13, 2008 6:45 pm    Post subject: Reply with quote

I think, ideal weight is a subjective feeling and it only means you feel comfortable in your body.

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Corti



Joined: 08 Feb 2007
Posts: 191

PostPosted: Thu Mar 13, 2008 9:18 pm    Post subject: Reply with quote

the sex box is there because men and women have different ideal BMIs, because they have different amounts of natural body fat (Same with body fat measurements. Men are supposed to have about 15%, women 22%)
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GenderQuest



Joined: 12 Oct 2007
Posts: 451

PostPosted: Thu Mar 13, 2008 10:06 pm    Post subject: Reply with quote

Maybe but the gender selector does nothing on that page, neither altering the BMI calculation nor the 'ideal' range values.
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Herb



Joined: 29 Aug 2007
Posts: 339
Location: Greater London Co-Prosperity Sphere, UK

PostPosted: Thu Mar 13, 2008 10:16 pm    Post subject: Reply with quote

BMI 23.5, which on the upper end of "healthy". Apparently I'm borderline obese.

WHR 0.78, which is on the lower end of "healthy". Apparently, I'm borderline malnourished.

("healthy" in terms of my alleged gender)

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nicholas



Joined: 08 Feb 2007
Posts: 117

PostPosted: Fri Mar 14, 2008 12:34 pm    Post subject: Reply with quote

17.5... :\
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