Skeletal Muscle Mass Index (SMMI): Age Trend
Male SMMI (median) declines from 8.95 kg/m2 at ages 40-44 to 8.37 kg/m2 at 65-69; female SMMI is more stable, ranging from 6.80 to 6.77 kg/m2.
Data source: Lee et al. (UK Biobank SMMI) About this study
Skeletal Muscle Mass Index (SMMI) Body Composition Trend
skeletal muscle mass index SMMI skeletal muscle index SMI appendicular skeletal muscle mass ASMM sarcopenia muscle mass UK Biobank BIA trend aging norms percentiles reference ranges
Skeletal Muscle Mass Index (SMMI) by Age (kg/m2)
Skeletal Muscle Mass Index (SMMI) Median Values
| Age | Male (kg/m2) | Female (kg/m2) |
|---|---|---|
| 42 | 8.95 | 6.8 |
| 47 | 8.88 | 6.82 |
| 52 | 8.8 | 6.81 |
| 57 | 8.67 | 6.78 |
| 62 | 8.53 | 6.78 |
| 67 | 8.37 | 6.77 |