TABLE 1

Clinical characteristics of the study population

Lean subjectsOverweight/ obese subjectsP
Sex (male/female)9 (5/4)12 (6/6)
Age (years)22.6 ± 3.338.9 ± 15.8<0.05
Weight (kg)64.8 ± 7.792.0 ± 12.8<0.05
BMI (kg/m2)22.1 ± 1.031.7 ± 1.9<0.05
Waist (cm)73 ± 4.4100 ± 10.4<0.05
Percent fat (DEXA)20.9 ± 7.634.2 ± 8.2<0.05
Fasting glucose (mg/dl)89 ± 3110 ± 27<0.05
Fasting insulin (μU/ml)4.9 ± 2.014.4 ± 9.6<0.05
Glucose disposal rate during euglycemic-hyperglycemic clamp (mg/min × kg fat-free mass)11.2 ± 3.46.0 ± 2.2<0.05
Abdominal subcutaneous AT<0.05
    AT pO2 (mmHg)55.4 ± 9.146.8 ± 10.6<0.05
    AT temperature (°C)34.0 ± 1.032.1 ± 1.4<0.05
  • Data are means ± SD. Percent body fat was measured by DEXA and represents mass as the percent of total body weight. The lean group included two African Americans, six Caucasians, and one Asian. The overweight/obese group included eight African Americans and four Caucasians. *P <0.05.