Table 1. Subject characteristics.
| Normal Testosterone (n = 13) | Low Testosterone (n = 12) | |
| Age | 56±1 | 57±2 |
| Weight (kg) | 97.0±4.9 | 93.4±4.6 |
| BMI (kg/m2) | 29.8±1.2 | 30.1±1.3 |
| Fat (%) | 33±2 | 35±2 |
| Fat (kg) | 31.7±3.5 | 32.2±3.1 |
| Upper body SQ (kg) | 16.3±2.1 | 17.2±1.9 |
| Lower body SQ (kg) | 8.8±0.8 | 9.9±0.7 |
| Visceral fat (kg) | 6.7±1.0 | 5.0±0.8 |
| Abdominal fat cell size (µg lipid·cell−1) | 0.71±0.07* | 0.84±0.07 |
| Femoral fat cell size (µg lipid·cell−1) | 0.92±0.11 | 0.86±0.08 |
| Testosterone (ng·dL−1) | 287±19 | <50 |
| Estradiol (pg·mL−1) | 17.6±1.3 | 3.3±0.3† |
| Fasting insulin (µU·L−1) | 8.9±2.1 | 7.7±1.7 |
| Fasting plasma glucose (mg·dL−1) | 100±2 | 102±3 |
| QUICKI | 0.36±0.01 | 0.36±0.01 |
| Plasma palmitate (µmol·L−1) | 92±4 | 93±7 |
| Palmitate flux (µmol·min−1) | 117±8 | 106±12 |
Values are mean ± SEM.
*p<0.05 between upper and lower body within groups.
†
p<0.05 between groups. Testosterone concentrations were not random variables and therefore not subject to statistical testing. For palmitate flux n = 12 for the normal testosterone group.