Table 1.
Descriptive characteristics of the participants
| N | Mean ± SD | |
|---|---|---|
| Sex (women %) | 82 (70.7%) | |
| Age (years) | 82 | 21.8 ± 2.2 |
| Body composition variables | ||
| Body mass index (kg/m2) | 82 | 24.9 ± 4.8 |
| Lean mass index (kg/m2) | 76 | 14.4 ± 2.3 |
| Fat mass index (kg/m2) | 76 | 8.9 ± 3.1 |
| Fat mass percentage (%) | 76 | 36.1 ± 7.9 |
| PET/CT variables | ||
| BAT volume (mL) | 82 | 69.0 ± 59.9 |
| BAT SUVmean | 82 | 2.2 ± 1.0 |
| BAT SUVpeak | 82 | 6.4 ± 4.7 |
| BAT Mean radiodensity (HU) | 62 | − 59.0 ± 9.7 |
| Descending aorta SUVpeak | 82 | 0.9 ± 0.2 |
| Subcutaneous WAT Triceps SUVpeak | 82 | 0.10 ± 0.05 |
| All skeletal muscle SUVpeak | 82 | 0.8 ± 0.2 |
| Fecal microbiota variables | ||
| Composition (Phylum) | ||
| Actinobacteria (%) | 82 | 1.7 ± 1.6 |
| Bacteroidetes (%) | 82 | 39.9 ± 8.9 |
| Firmicutes (%) | 82 | 48.3 ± 9.9 |
| Proteobacteria (%) | 82 | 6.7 ± 5.4 |
| Verrucomicrobia (%) | 82 | 2.3 ± 4.3 |
Data are presented as means ± standard deviations (SD). All SUV variables are shown relative to lean body mass
BAT brown adipose tissue, HU Hounsfield Units, SUV standardized uptake value, WAT white adipose tissue