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Buh-Bye BMI?
Topic Started: Jun 15 2017, 03:59 AM (136 Views)
George K
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Finally
Hello Waist-to-Height Ratio:

Quote:
 
Toss the body mass index (BMI) scale, researchers have found that calculating a person's waist-to-height ratio may be a better estimate of risk of obesity and metabolic conditions—such as insulin resistance, type-2 diabetes, cardiovascular disease, and chronic pain.

In a newly published study, researchers studied a group of 81 adults (40 women and 41 men) and measured whole-body fat percentage and abdominal fat (visceral adipose tissue, VAT) mass.1 They found that 36.5% more adults would be classified as obese using whole-body fat data rather than BMI.

To capture these results, the researchers, led by Michelle Swainson, PhD, a senior lecturer in exercise physiology at the Carnegie School of Sport at Leeds Beckett, gathered whole-body and VAT data using a total body dual-energy x-ray absorptiometry (DXA) scanner. They then calculated 5 predictors of whole-body fat and VAT:
  • BMI
  • Waist circumference
  • Waist-to-hip ratio
  • Waist-to-height ratio
  • Waist-to-height ratio0.05
According to the study, derived cut-points for predicting whole body obesity were 0.53 in men and 0.54 in women. The cut-point for predicting visceral obesity was 0.59 in both sexes.

"The conventional measurement of obesity used by primary care physicians is BMI. Although there are benefits of this method, there is concern that a lot of people are being classified as obese by BMI when they are not or are being missed by this classification when they need to be referred for help," said Dr. Swainson. For example, take the case of the person who has a normal BMI but high abdominal fat that is often missed.

"Whole-body fat percentage, and specifically VAT mass, are associated with health conditions including insulin resistance, type 2 diabetes, and cardiovascular disease, but are not fully accounted for through BMI evaluation," said.

The results of the study found that the best predictor of obesity was a waist-to-height ratio. The simple waist circumference divided by height measurement is not new to obesity study but despite evidence supporting its use, it is still not routinely measured in clinical practice, noted the researchers.

"Our waist-to-height broadly align to current guidelines that adults and children should kept their waist circumferences to less than half their height.," said Dr. Swainson, "By introducing this alternative measure, more men and women would potentially be referred to programs, such as weight loss management, to receive help in improving their health."
A guide to GKSR: Click

"Now look here, you Baltic gas passer... "
- Mik, 6/14/08


Nothing is as effective as homeopathy.

I'd rather listen to an hour of Abba than an hour of The Beatles.
- Klaus, 4/29/18
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jon-nyc
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Cheers
N=81? Gonna need more than that to dislodge BMI. But interesting all the same.
In my defense, I was left unsupervised.
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George K
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Finally
jon-nyc
Jun 15 2017, 05:26 AM
N=81? Gonna need more than that to dislodge BMI. But interesting all the same.
Thought the same thing. Gonna need at least two orders of magnitude more.

Here's a couple of orders of magnitude:

http://www.jclinepi.com/article/S0895-4356(07)00322-8/fulltext

Quote:
 
This meta-analysis, including data on more than 88,000 individuals from diverse populations, supports previous claims that measures of central obesity, in particular, the WHtR [[7], [8], [9], [18], [19]], provide a superior tool for discriminating obesity-related cardiovascular risk compared with BMI. However, the observed differences in the discriminatory capability between BMI with each of the individual measures of central obesity were observed to be small, and in general, statistically nonsignificant.
Edited by George K, Jun 15 2017, 05:34 AM.
A guide to GKSR: Click

"Now look here, you Baltic gas passer... "
- Mik, 6/14/08


Nothing is as effective as homeopathy.

I'd rather listen to an hour of Abba than an hour of The Beatles.
- Klaus, 4/29/18
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John D'Oh
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MAMIL
If it makes me appear less of a lard-arse, then I'm all for it.


If it doesn't, what a ridiculous waist of pubic money!!!!!
What do you mean "we", have you got a mouse in your pocket?
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Catseye3
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Fulla-Carp
So this means what? That fewer angels will fit on the head of the pin?
Chocolate doesn't ask silly questions. Chocolate understands.
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brenda
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..............
Catseye3
Jun 15 2017, 06:45 AM
So this means what? That fewer angels will fit on the head of the pin?
Depends on their waist measurements ...
“Weeds are flowers, too, once you get to know them.”
~A.A. Milne
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Big John
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Senior Carp
I have more chins than a Chinese phone book. Thank goodness for goatees.





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Rainman
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Fulla-Carp
Big John
Jun 15 2017, 09:25 AM
I have more chins than a Chinese phone book. Thank goodness for goatees.
Never heard that one before. :lol2:
(actually, I had to think for a second) :lol2:
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Big John
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Senior Carp
I have to watch who I tell that one to. People under 30 don't know what a phone book is.





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