Table 2 Characteristics of African American Subjects Who Underwent Intravenous Glucose Tolerance Testing

Gender (Male/Female)

44/64

Age (years)

37.2 ± 9.4

Body mass index (kg/m²)

30.5 ± 6.4

Waist circumference (cm)

97.6 ± 19.9

Waist:Hip ratio

0.919 ± 0.108

Systolic blood pressure

106.4 ± 10.7

Diastolic blood pressure

63.1 ± 11.4

Protocol (tolbutamide/insulin)

60/30

Percent fat (DEXA)

32.1 ± 11.2

S_I (× 10^-4 min^-1/μU/ml)

4.95 ± 9.17

Sg (min^-1)

0.0194 ± 0.082

AIR_g (pmol/l)

5013 ± 3996

Disposition Index

2590 ± 2608

Fasting glucose (mmol/l)

4.66 ± 0.56

Fasting insulin (pmol/l)

54.3 ± 36.8