General Discussion Triathlon Talk » BMI Rss Feed  
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2008-07-30 2:28 PM

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Elite
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Subject: BMI

BMI pisses me off...

states that i'm overweight!

i'm 5' 9.5"  and weigh 172lbs. I think i look healthy, i feel and act healthy, therefore I am healthy? I also think that BMI is an antiquated , one dimensional measurement of  the body.

Ok, just my rant...

Thanks for listening... 



2008-07-30 2:44 PM
in reply to: #1570678

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Champion
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Butler
Subject: RE: BMI
Agree, BMI is garbage.  I am 6'7" 215 and at the high end of normal but am 13% BF.  But I think going strickly by weight is garbage too.  I have heard too many people, mainly women, say I want to weigh Xlbs, where are you getting that number from?  I say do you BF% and then get to a normal %.  As long as that number is going down you are okay even if your weight goes up.
2008-07-30 3:26 PM
in reply to: #1570678

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Extreme Veteran
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Glasgow, UK
Subject: RE: BMI
I don't think it's too bad for the majority of the population, particularly those that are overwight as long as you don't take it in isolation (you use body fat and waist to hip ratio). I agree that it's unsuitable for athelete and those involved in training.
2008-07-30 5:04 PM
in reply to: #1570678

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Subject: RE: BMI

X2, Tri d00d. 

BMI is taking considerable flak these days, and I think rightly so.  I'm about the same height as you, and the BMI "healthy zone" is insane.  A while back I had a couple of different body fat tests done , and they estimated my lean mass at 165-170 (somewhere in there, don't remember the exact number)... yet, the "healthy" part of the BMI scale for my height starts at what, 135?  I suppose I could chop an arm and a leg off to fit better on the chart?

There's supposedly movement to adopt waist circumference as a better measurement of fitness--which makes sense.

 

2008-08-01 8:22 AM
in reply to: #1570678

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Extreme Veteran
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Subject: RE: BMI
Yeah, BMI seems kinda crazy to me. There are other things that need to be considered-bone structure, fat%, porportionality, cardiovascular fitness, hormones, and on and on. 6 Billion different people in the world-6 billion different definitions of healthy.
2008-08-01 11:39 AM
in reply to: #1570678

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Chicago suburbs
Subject: RE: BMI
For anyone who's interested..BMI is just your weight to height ratio (or maybe the other way around).  It has no capability to include your body type whatsoever, and I'm pretty sure diet companies just use it to make people think they are unhealthy and need to lose more weight.  A body fat percentage measurement is much more accurate!  I've personally had a BodPod measurement done.  It's pretty easy and you can find testing locations on their website   Other options are the hydro testing or electrical conductivity or others that are newer/more advanced (and presumably more expensive).


2008-08-02 2:25 PM
in reply to: #1570678

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Regular
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Katy, TX
Subject: RE: BMI
Agree totally with tri_d00d and kproudfoot. I have always found the BMI "normal" ranges to be ridiculously low. I started using the BF% as a main indicator and a goal rather than BMI. This was primarily due to the fact that when I started weight lifting, my weight was holding steady, but waistline was dropping like rock. Any measurement that doesn't take into consideration that fact seems seriously flawed.
2008-08-02 8:06 PM
in reply to: #1570678

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Subject: RE: BMI
BMI is . It is outdated and doesn't take into consideration muscle mass.

I'm 6' and 202 lbs. I may be a tad overweight compared to brad pitt but I am also strong and fit. I have 18% bodyfat and wear a size 36" pants. BMI says I'm "obese". My docotr says I have a healthy liver, blood pressure, cholesterol, etc. I'll trust him over a chart.
2008-08-03 10:05 AM
in reply to: #1578274

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No excuses!
Subject: RE: BMI

big john h - 2008-08-02 9:06 PM BMI is . It is outdated and doesn't take into consideration muscle mass. I'm 6' and 202 lbs. I may be a tad overweight compared to brad pitt but I am also strong and fit. I have 18% bodyfat and wear a size 36" pants. BMI says I'm "obese". My docotr says I have a healthy liver, blood pressure, cholesterol, etc. I'll trust him over a chart.

I am in the exact same situation. I just took one of those tests at the supermarket that does Blood Pressure, weight, BMI. Granted I am a little heavy right now but it came back obese. Blood pressure was grea, resting heart rate was that of a elite level athlete (which I am not) but OBESE Yell

2008-08-03 10:41 AM
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Subject: RE: BMI
BMI is a POPULATION statistic.  You guys (and many others) are attempting to use it as an individual one.  Big difference.
2008-08-04 9:02 PM
in reply to: #1570678

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Subject: RE: BMI
Agreed but it is hard when I read a magazine or website or article and people who are 6' tall and 200 lbs are listed as obese. That means people like Evander Holyfield or Bo Jackson are grossly obese. That is ridiculous. I get defensive


2008-09-06 7:53 PM
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Expert
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Milwaukee, Wisconsin
Subject: RE: BMI
Ha, yeah BMI is way off...  I just had mine tested along with a skin-fold test.  The BMI put me at a 23, and the gal kinda looked at me funny and said, "Are you sure you're 5'6? Cuz you sure don't look like a 23."  Sink-fold is MUCH more accurate, and put me at 17% BF

Edited by Pegasus1731 2008-09-06 7:54 PM
2008-09-08 9:53 AM
in reply to: #1578274

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Regular
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BA, Oklahoma
Subject: RE: BMI

big john h - 2008-08-02 8:06 PM I'm 6' and 202 lbs.  BMI says I'm "obese".

BMI has two categories beyond healthy.  Overweight and Obese.  Overweight is just outside of the healthy range, while Obese is a good bit past that.

 I also weight about 205 and am 6'-0", my BMI rating is Overweight...not Obese.

For my height to get in the normal range (normal body type, not a body builder), it says I would have to weight under 185.  I think this is extremely reasonable, and probably pretty correct.

2008-09-08 10:24 AM
in reply to: #1657782

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Subject: RE: BMI
toader - 2008-09-08 10:53 AM

big john h - 2008-08-02 8:06 PM I'm 6' and 202 lbs. BMI says I'm "obese".

BMI has two categories beyond healthy. Overweight and Obese. Overweight is just outside of the healthy range, while Obese is a good bit past that.

I also weight about 205 and am 6'-0", my BMI rating is Overweight...not Obese.

For my height to get in the normal range (normal body type, not a body builder), it says I would have to weight under 185. I think this is extremely reasonable, and probably pretty correct.

Its accuracy varies too drastically, and that's the problem. I've read more and more that there's pressure to move to the hips to waist ratio (or is it waist to hips?), since that gives a better indication of fitness.

In my case, my "healthy weight" according to the BMI charts (I'm 5'9) tops out around 162, with 169 as the start of the Overweight section... problem is, couple different forms of testing were both pretty close in estimating my lean body mass at around 175ish... The guy doing the testing laughed and said "Well, I guess they want you to chop off a leg or something."

As for it being a population statistic... it's used extensively by health insurance companies and MANY doctors. Thankfully, my latest doctor isn't a fan of the chart--he suggested I shoot for the 180s and see how I look and feel there, and maybe get another round of BF testing at that time.

2008-09-08 10:35 AM
in reply to: #1657875

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Master
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Subject: RE: BMI
merlyn411 - 2008-09-08 10:24 AM
toader - 2008-09-08 10:53 AM

big john h - 2008-08-02 8:06 PM I'm 6' and 202 lbs. BMI says I'm "obese".

BMI has two categories beyond healthy. Overweight and Obese. Overweight is just outside of the healthy range, while Obese is a good bit past that.

I also weight about 205 and am 6'-0", my BMI rating is Overweight...not Obese.

For my height to get in the normal range (normal body type, not a body builder), it says I would have to weight under 185. I think this is extremely reasonable, and probably pretty correct.

Its accuracy varies too drastically, and that's the problem. I've read more and more that there's pressure to move to the hips to waist ratio (or is it waist to hips?), since that gives a better indication of fitness.

In my case, my "healthy weight" according to the BMI charts (I'm 5'9) tops out around 162, with 169 as the start of the Overweight section... problem is, couple different forms of testing were both pretty close in estimating my lean body mass at around 175ish... The guy doing the testing laughed and said "Well, I guess they want you to chop off a leg or something."

As for it being a population statistic... it's used extensively by health insurance companies and MANY doctors. Thankfully, my latest doctor isn't a fan of the chart--he suggested I shoot for the 180s and see how I look and feel there, and maybe get another round of BF testing at that time.

Many Doctors use it as a way of producing statistics (not always for advising patients)...especially for research purposes it is a way of looking at a population of people without having to do extensive other testing...in fact you don't even need to have the person in front of you...they could be dead or in Antartica or anywhere all you need is their height and their weight.  Is it perfect?...No  Does it have a place in looking at the correlation between size and various health problems or practices..probably yes.  Will it work for everyone?...No, that is why we all should have a relationship with our doctor and discuss weight and other health issues.  As for insurance companies well...there is nothing I can say that is nice about them and what they can use against you so I won't say anything at all. 

2008-09-14 1:08 AM
in reply to: #1570678

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Regular
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Subject: RE: BMI
And now the Wii fit is out there touting it as the be all end all for everyone...  just adding the the public misconception about BMI.


2008-09-14 6:28 AM
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Champion
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MA
Subject: RE: BMI

I find BMI somewhat amusing. What it recommends I weigh for my height is almost the same as my lean body mass is..so that would mean I'd be like 2% body fat...obviously that wouldn't be healthy for me.

I think what Derek and others have chimed in with that is a general tool for group that shouldn't be used on an individual level.  Yet I know folks that have gone to their doc who has shared with them their BMI.

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