Lean Mass Index (LMI): Age Trend
Median LMI peaks at age 45–54 (20.2 kg/m² men, 16.4 women), then declines gradually with age.
Data source: Kelly et al. (NHANES DXA) About this study
Lean Mass Index (LMI) Body Composition Trend
lean mass index LMI lean body mass LBM lean muscle mass skeletal muscle NHANES DXA body composition trend aging norms normative data normative values reference values percentiles benchmarks reference ranges standards Lean Mass Index (LMI) by Age Chart (kg/m²)
Lean Mass Index (LMI) Median Values
| Age | Male (kg/m²) | Female (kg/m²) |
|---|---|---|
| 20-24 | 18.98 | 15.60 |
| 25-29 | 19.31 | 15.83 |
| 30-34 | 19.60 | 16.03 |
| 35-39 | 19.85 | 16.19 |
| 40-44 | 20.04 | 16.30 |
| 45-49 | 20.15 | 16.36 |
| 50-54 | 20.15 | 16.35 |
| 55-59 | 20.07 | 16.30 |
| 60-64 | 19.91 | 16.21 |
| 65-69 | 19.67 | 16.08 |
| 70-74 | 19.36 | 15.92 |
| 75-79 | 18.98 | 15.73 |
| 80-84 | 18.58 | 15.53 |
| 85+ | 18.16 | 15.32 |