TABLE 3.
Metabolic measurements of the study participants by race1
| African Americans (n = 32) | Whites (n = 28) | P2 | |
|---|---|---|---|
| Fasting glucose (mmol/L) | 5.2 ± 0.1 (4.6–6.4)3 | 5.1 ± 0.1 (4.1–6.3) | 0.44 |
| Fasting insulin (pmol/L) | 88.7 ± 10.1 (16–306) | 65.1 ± 5.0 (24–138) | 0.06 |
| SI (μU/mL−1 · 10−4 · min−1) | 3.1 ± 0.4 (0.1–8.4) | 5.3 ± 0.5 (0.8–10) | 0.001 |
| AIRg (pmol · L−1 · min−1) | 518.4 ± 79 (93.5–2180) | 196.7 ± 27 (40–687) | 0.0006 |
1
SI, insulin sensitivity index, calculated from data obtained during the intravenous-glucose-tolerance test; AIRg, acute insulin response to intravenous glucose, calculated as the mean incremental value over baseline for the first 8 min after the glucose injection, during the same intravenous-glucose-tolerance test.
2
ANOVA; all variables were normally distributed except fasting insulin and AIRg, which were naturally log transformed before statistical analysis.
3
x̄ ±SEM; range in parentheses (all such values).