Table 1.
descriptive statistics by ethnicity (mean ± s.d.)
| Whites (n = 105) | African Americans (n = 108) | P | |
|---|---|---|---|
| Age (years) | 34.3 ± 6.4 | 34.2 ± 6.0 | 0.842 |
| Body weight (kg) | 77.5 ± 7.8 | 76.8 ± 6.4 | 0.483 |
| BMI (kg/m2) | 28.2 ± 1.4 | 28.3 ± 1.3 | 0.424 |
| Fat mass (kg) | 34 ± 5 | 33 ± 4 | 0.072 |
| Body fat (%) | 46 ± 4 | 45 ± 4 | 0.066 |
| Lean mass (kg) | 40 ± 4 | 40 ± 4 | 0.471 |
| IAAT (cm2)a | 94 ± 30 | 64 ± 26 | <0.001 |
| SSAAT (cm2)a | 188 ± 50 | 194 ± 48 | 0.350 |
| DSAAT (cm2)a | 141 ± 54 | 143 ± 51 | 0.794 |
| Fasting glucose (mg/dl) | 88 ± 6 | 86 ± 6 | 0.019 |
| Fasting insulin (μIU/ml) | 11 ± 3 | 12 ± 4 | 0.144 |
| Adiponectin (μg/ml) | 9.88 ± 3.78 | 8.97 ± 4.27 | 0.027 |
| Insulin sensitivity (×10−4 min−1/(μIU/ml))b | 3.48 ± 1.82 | 2.50 ± 1.89 | <0.001 |
| TNF-α (pg/ml)c | 1.10 ± 1.15 | 0.80 ± 0.57 | 0.003 |
| sTNFR-1 (ng/ml)d | 1.89 ± 0.37 | 1.71 ± 0.35 | <0.001 |
| sTNFR-2 (ng/ml)e | 4.33 ± 1.21 | 3.72 ± 1.03 | <0.001 |
| IL-6 (pg/ml)f | 1.79 ± 1.32 | 1.66 ± 1.20 | 0.458 |
| CRP (mg/l)g | 1.97 ± 1.70 | 2.28 ± 2.09 | 0.451 |
Boldface values indicate P < 0.05.
CRP, C-reactive protein; DSAAT, deep subcutaneous abdominal adipose tissue; IAAT, intra-abdominal adipose tissue; IL-6, interleukin-6; SSAAT, superficial subcutaneous abdominal adipose tissue; sTNFR-1, soluble tumor necrosis factor receptor-1; sTNFR-2, soluble tumor necrosis factor receptor-2; TNF-α, tumor necrosis factor-α.
a
n = 211 for CT scan data.
b
n = 204 for insulin sensitivity.
c
n = 212 for TNF-α.
d
n = 213 for sTNFR-1.
e
n = 212 for sTNFR-2.
f
n = 213 for IL-6.
g
n = 198 for CRP.