body roundness index
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Indications
Procedure
- Body Roundness Index = 364.2 - 365.5 Eccentricity*[1]
* Eccentricity quantifies the degree of circularity of an ellipse[1]
- its values range between 0 to 1
- 0 is a perfect circle, 1 a vertical line
- BRI combines waist circumference & height to describe body shape[2]
- BRI in ref[1] ranged from 1-16
- eccentricity is defined as square root of (1 - [[[A25007|waist circumference]] in cm/2 x pi]*2 / [0.5 x height in cm]*2), where *2 is squared[2]
Interpretation
- larger values of BRI are associated with rounder individuals
- values closer to 1 are related to more narrowly shaped lean individuals
More general terms
References
- ↑ 1.0 1.1 1.2 1.3 Thomas DM, Bredlau C, Bosy-Westphal A et al Relationships between body roundness with body fat and visceral adipose tissue emerging from a new geometrical model. Obesity (Silver Spring). 2013 Nov;21(11):2264-71. PMID: https://www.ncbi.nlm.nih.gov/pubmed/23519954 PMCID: PMC3692604 Free PMC article.
- ↑ 2.0 2.1 2.2 Zhang X, Ma N, Lin Q et al Body Roundness Index and All-Cause Mortality Among US Adults. JAMA Netw Open. 2024;7(6):e2415051. PMID: https://www.ncbi.nlm.nih.gov/pubmed/38837158 PMCID: PMC11154161 Free PMC article. https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2819558
- ↑ Yang M, Liu J, Shen Q et al Body Roundness Index Trajectories and the Incidence of Cardiovascular Disease: Evidence From the China Health and Retirement Longitudinal Study J Am Heart Assoc. 2024 Sep 25:e034768 PMID: https://www.ncbi.nlm.nih.gov/pubmed/39319466 https://www.ahajournals.org/doi/10.1161/JAHA.124.034768