Body Roundness Index (BRI): Age Trend
Median Body Roundness Index trends upward from about 3.4 in the early 20s to a peak of 5.9-6.0 in men's 70s, and from 3.5 to a peak of 6.3 in women's late 50s, with bracket-to-bracket noise rather than a smooth monotonic climb.
Data source: NHANES (CDC) — derived BRI percentiles About this study
Body Roundness Index (BRI) Body Composition Trend
body roundness index BRI body shape eccentricity central adiposity Thomas 2013 waist height roundness trend aging norms normative data normative values reference values percentiles benchmarks reference ranges standards Body Roundness Index (BRI) by Age Chart (index)
Body Roundness Index (BRI) Median Values
| Age | Male (index) | Female (index) |
|---|---|---|
| 20-24 | 3.39 | 3.47 |
| 25-29 | 4.21 | 4.21 |
| 30-34 | 4.39 | 5.19 |
| 35-39 | 5.04 | 4.85 |
| 40-44 | 4.86 | 5.00 |
| 45-49 | 5.24 | 5.37 |
| 50-54 | 5.62 | 5.76 |
| 55-59 | 5.31 | 6.30 |
| 60-64 | 5.29 | 5.73 |
| 65-69 | 5.41 | 5.90 |
| 70-74 | 5.90 | 5.99 |
| 75-79 | 5.95 | 5.88 |
| 80+ | 5.42 | 5.71 |