Body adiposity index

The body adiposity index (BAI) is a method of estimating the amount of body fat in humans. The BAI is calculated without using body weight, unlike the body mass index (BMI). Instead, it uses the size of the hips compared to the person's height.

Based on population studies, the BAI is approximately equal to the percentage of body fat for adult men and women of differing ethnicities.[1]

Formula

The BAI is calculated as:[2]

Hip circumference (R = 0.602) and height (R = −0.524) are strongly correlated with percentage of body fat. Comparing BAI with "gold standard" dual-energy X-ray absorptiometry (DXA) results, the correlation between DXA-derived percentage of adiposity and the BAI in a target population was R = 0.85, with a concordance of C_b = 0.95.[3]

Uses

The BAI could be a good tool to measure adiposity due, at least in part, to the advantages over other more complex mechanical or electrical systems. Probably, the most important advantage of BAI over BMI is that weight is not needed. However, in general it seems that the BAI does not overcome the limitations of BMI.[4]

Stated advantages of the BAI are that it approximates body fat percentage, while the widely used BMI is known to be of limited accuracy, and is different for males and females with similar percentage body adiposity; and that it does not involve weighing, so can be used in remote locations with limited access to scales. A detailed study published in 2012 concluded that estimates of body fat percentage based on BAI were not more accurate than those based on BMI, waist circumference, or hip circumference.[5]

Adiposity indexes that include the waist circumference (for example waist-to-height ratio WHtR) may be better than BAI and BMI in evaluating metabolic and cardiovascular risk in both clinical practice and research.[6]

gollark: How DARE you insult helloboi in this way ish?!?!?!?
gollark: Clearly, maths is wrong and I have created a brave new definition of prime numbers.
gollark: Oh no, my code thinks a number is composite when it is prime, oh bee.
gollark: Rege̿̔̉x-based HTML parsers are the cancer that is killing StackOverflow it is too late it is too late we cannot be saved the transgression of a chi͡ld ensures regex will consume all living tissue (except for HTML which it cannot, as previously prophesied) dear lord help us how can anyone survive this scourge using regex to parse HTML has doomed humanity to an eternity of dread torture and security holes using regex as a tool to process HTML establishes a breach between this world and the dread realm of c͒ͪo͛ͫrrupt entities (like SGML entities, but more corrupt) a mere glimpse of the world of reg​ex parsers for HTML will ins​tantly transport a programmer's consciousness into a world of ceaseless screaming, he comes, the pestilent slithy regex-infection wil​l devour your HT​ML parser, application and existence for all time like Visual Basic only worse he comes he comes do not fi​ght he com̡e̶s, ̕h̵i​s un̨ho͞ly radiańcé destro҉ying all enli̍̈́̂ghtenment, HTML tags lea͠ki̧n͘g fr̶ǫm ̡yo​͟ur eye͢s̸ ̛l̕ik͏e liq​uid pain, the song of re̸gular exp​ression parsing will exti​nguish the voices of mor​tal man from the sp​here I can see it can you see ̲͚̖î̩́t́̋̀ it is beautiful t​he final snuffing of the lie​s of Man ALL IS LOŚ̏̈́T ALL I​S LOST the pon̷y he comes he c̶̮omes he comes the ich​or permeates all MY FACE MY FACE ᵒh god no NO NOO̼O​O NΘ stop the an​*͑̾̾​̅ͫ͏g͛͆̾l̍ͫͥe̠̅s ͎a̧͈͖r̽̾̈́e n​ot rè̑ͧaͨl̃ͤ͂ ZA̡͊͠LGΌ ISͮ̂҉̯͈͕ TO͇̹ͅƝ̴ȳ̳ TH̘Ë͖́̉ ͠P̯͍̭O̚​N̐Y̡ Hͨ͊̽E̾͛ͪ ͧ̾ͬCͭ̏ͥOͮ͏̮M͊̒̚Ȇͩ͌Sͯ̿̔
gollark: ÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆÆ

References
  1. "A Better Index of Body Adiposity". Obesity. Obesity - A Research Journal. 20: 1135. doi:10.1038/oby.2012.99. PMC 3275633.
  2. "New Method of Calculating Body Fat Unlikely to Replace BMI". Archived from the original on 2011-09-07. Retrieved 2011-03-08.
  3. Is the new BAI better than the old BMI?
  4. López AA, Cespedes ML, Vicente T, Tomas M, Bennasar-Veny M, et al. (2012) Body Adiposity Index Utilization in a Spanish Mediterranean Population: Comparison with the Body Mass Index" PLoS ONE 7(4): e35281
  5. Freedman DS, Thornton JC, Pi-Sunyer FX, Heymsfield SB, Wang J, Pierson RN Jr, Blanck HM, Gallagher D. "The body adiposity index (hip circumference ÷ height(1.5)) is not a more accurate measure of adiposity than is BMI, waist circumference, or hip circumference". Obesity (Silver Spring). 20: 2438–44. doi:10.1038/oby.2012.81. PMC 3477292. PMID 22484365.
  6. Bennasar-Veny M, Lopez-Gonzalez AA, Tauler P, Cespedes ML, Vicente-Herrero T, et al. (2013). "Body Adiposity Index and Cardiovascular Health Risk Factors in Caucasians: A Comparison with the Body Mass Index and Others". PLoS ONE. 8 (5): e63999. doi:10.1371/journal.pone.0063999. PMC 3667028.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.