Author Topic: What is Body Mass Index (BMI)?  (Read 673 times)

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Offline ruben

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What is Body Mass Index (BMI)?
« on: May 09, 2009, 07:17:21 PM »
Body Mass Index (BMI) is a number calculated from a person's weight and height. BMI is a reliable indicator of body fatness for people. BMI does not measure body fat directly, but research has shown that BMI correlates to direct measures of body fat, such as underwater weighing and dual energy x-ray absorptiometry (DXA).1, 2 BMI can be considered an alternative for direct measures of body fat. Additionally, BMI is an inexpensive and easy-to-perform method of screening for weight categories that may lead to health problems

BMI is calculated the same way for both adults and children. The calculation is based on the following formulas

Kilograms and meters (or centimeters)
Formula: weight (kg) / [height (m)]2
With the metric system, the formula for BMI is weight in kilograms divided by height in meters squared. Since height is commonly measured in centimeters, divide height in centimeters by 100 to obtain height in meters.

Example: Weight = 68 kg, Height = 165 cm (1.65 m)
Calculation: 68 ÷ (1.65)2 = 24.98

Pounds and inches
Formula: weight (lb) / [height (in)]2 x 703
Calculate BMI by dividing weight in pounds (lbs) by height in inches (in) squared and multiplying by a conversion factor of 703.

Example: Weight = 150 lbs, Height = 5'5" (65")
Calculation: [150 ÷ (65)2] x 703 = 24.96

The standard weight status categories associated with BMI ranges for adults are shown in the following:
Underweight = <18.5
Normal weight = 18.5-24.9
Overweight = 25-29.9
Obesity = BMI of 30 or greater
 
Source:
http://www.nhlbisupport.com/bmi/
http://www.cdc.gov/healthyweight/assessing/bmi/adult_BMI/in
dex.html
« Last Edit: May 16, 2009, 05:15:26 PM by Forum Staff »

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What is Body Mass Index (BMI)?
« on: May 09, 2009, 07:17:21 PM »
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Offline prettygirl

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Re: Re: What is Body Mass Index (BMI)?
« Reply #1 on: April 08, 2014, 04:27:54 PM »
i think i saw another lind of measurement that is better than bmi. nabasa ko lng sa yahoo the other day. much better sya kesa sa bmi. i forgot the term. its more accurate daw to give a better assessment of how healthy you are.


Offline congressman

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Re: What is Body Mass Index (BMI)?
« Reply #2 on: April 19, 2014, 12:46:31 PM »
Yeah, BMI isn't that perfect but it is a nice starting point.
Pointless ang BMI with athletes kasi it will calculate them as obese.

Also BMI doesn't take account the thin-fat (those who look thin, have thin arms and legs but have belly fat) who are higher risk for diabetes and heart disease.

Caliper measurements are more accurate in measuring body fat. Also Waist-to-hip ratio is a better indicator for disease risk.


Offline firefox

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Re: What is Body Mass Index (BMI)?
« Reply #3 on: June 08, 2014, 11:46:54 AM »
The body mass index (BMI) is a measure of weight relative to height and is commonly used to classify underweight, overweight and obesity in adult men and women. It is defined as the weight in Kg divided by the square of the height in metres. e.g., An adult weighing 65 Kg and 1.7 m tall will have a bmi of 22.48.
BMI = 65 Kg/ (1.7 m2) = 65/ 2.89 = 22.49
It is pertinent to note that BMI calculation (formula) is age-independent and the same for both sexes. However, for children below 19 years of age, BMI values are interpreted based on sex- and age-specific percentiles.  :)


Offline Bubbles

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Re: What is Body Mass Index (BMI)?
« Reply #4 on: June 09, 2014, 12:51:52 PM »
i think i saw another lind of measurement that is better than bmi. nabasa ko lng sa yahoo the other day. much better sya kesa sa bmi. i forgot the term. its more accurate daw to give a better assessment of how healthy you are.


I think yung tinutukoy mo is yun A Body Shape Index or ABSI...

From "A New Body Shape Index Predicts Mortality Hazard Independently of Body Mass Index" by Nir Y. Krakauer and Jesse C. Krakauer:

"Body shape, as measured by ABSI, appears to be a substantial risk factor for premature mortality in the general population derivable from basic clinical measurements. ABSI expresses the excess risk from high WC (waist circumference) in a convenient form that is complementary to BMI and to other known risk factors."

The new obesity measurement tool was developed by researchers at The City College of New York. Using data from over 14,000 non-pregnant adults, they found mortality rates were best predicted by ABSI, while BMI was less accurate. To get your ABSI, you’ll need both your BMI and waist circumference (WC) equation is:



 The results compare the relative risk of your BMI along with the risk calculated from the ABSI measurement. It's a good way to see how an elevated waist circumference is affecting your health.




Offline JohnG2012

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Re: What is Body Mass Index (BMI)?
« Reply #5 on: March 22, 2015, 10:49:57 PM »
Good read! Thank you for the Information. Nagpacheck ako dati ng BMI


 

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