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Table 1—

Subject characteristics

African AmericansCaucasians
n (male/female) 41/42 41/37 
Age (years) 12.2 ± 2.0 (8.5–16.8) 12.3 ± 2.1 (8.0–17.2) 
Tanner stage   
    I 22 20 
    II–V 61 58 
Weight (kg) 60.5 ± 25.9 (27.6–128.8) 61.5 ± 30.1 (25.3–139.1) 
BMI (kg/m224.8 ± 8.2 (14.7–49.6) 24.6 ± 8.5 (13.9–47.1) 
Fat mass (kg)"* 18.3 ± 14.5 (2.7–51.0) 17.5 ± 14.3 (3.1–50.6) 
Total fat (%)"* 27.7 ± 13.3 (6.1–51.1) 27.7 ± 12.4 (9.2–51.1) 
Viseral adipose tissue (cm232.2 ± 26.5 (3.2–108.1) 43.3 ± 39.5 (5.2–161.4) 
Abdominal subcutaneous adipose tissue (cm2231.1 ± 222.2 (7.0–890.1) 247.6 ± 228.5 (20.8–822.6) 
Leptin (ng/ml) 18.3 ± 14.6 (1.5–61.6) 16.3 ± 14.0 (1.9–65.2) 
Adiponectin (μg/ml) 10.2 ± 5.5 (2.7–28.4) 12.1 ± 6.0 (1.6–30.4) 
Fasting glucose (mg/dl) 95.0 ± 5.4 (83.0–108.0) 96.5 ± 6.4 (84.3–117.7) 
Fasting insulin (μU/ml) 24.5 ± 16.0 (8.1–91.1) 24.6 ± 16.0 (6.8–95.5) 
Proinsulin (pmol/l) 19.7 ± 20.5 (3.2–112.0) 23.1 ± 21.2 (3.2–108.0) 
Insulin sensitivity (mg · kg FFM−1 · min−1)"* 11.0 ± 5.9 (1.1–24.2) 13.2 ± 8.0 (1.9–40.1) 
Total cholesterol§ 157.0 ± 28.8 (76.0–232.0) 166.3 ± 31.6 (84.0–258.0) 
Triglycerides§ 76.8 ± 33.3 (32.0–164.0) 112.6 ± 65.7 (36.0–395.0) 
HDL§ 48.0 ± 11.7 (27.0–97.8) 46.6 ± 10.3 (28.8–78.7) 
LDL§ 93.7 ± 26.6 (22.0–167.0) 97.0 ± 27.6 (35.0–189.0) 
African AmericansCaucasians
n (male/female) 41/42 41/37 
Age (years) 12.2 ± 2.0 (8.5–16.8) 12.3 ± 2.1 (8.0–17.2) 
Tanner stage   
    I 22 20 
    II–V 61 58 
Weight (kg) 60.5 ± 25.9 (27.6–128.8) 61.5 ± 30.1 (25.3–139.1) 
BMI (kg/m224.8 ± 8.2 (14.7–49.6) 24.6 ± 8.5 (13.9–47.1) 
Fat mass (kg)"* 18.3 ± 14.5 (2.7–51.0) 17.5 ± 14.3 (3.1–50.6) 
Total fat (%)"* 27.7 ± 13.3 (6.1–51.1) 27.7 ± 12.4 (9.2–51.1) 
Viseral adipose tissue (cm232.2 ± 26.5 (3.2–108.1) 43.3 ± 39.5 (5.2–161.4) 
Abdominal subcutaneous adipose tissue (cm2231.1 ± 222.2 (7.0–890.1) 247.6 ± 228.5 (20.8–822.6) 
Leptin (ng/ml) 18.3 ± 14.6 (1.5–61.6) 16.3 ± 14.0 (1.9–65.2) 
Adiponectin (μg/ml) 10.2 ± 5.5 (2.7–28.4) 12.1 ± 6.0 (1.6–30.4) 
Fasting glucose (mg/dl) 95.0 ± 5.4 (83.0–108.0) 96.5 ± 6.4 (84.3–117.7) 
Fasting insulin (μU/ml) 24.5 ± 16.0 (8.1–91.1) 24.6 ± 16.0 (6.8–95.5) 
Proinsulin (pmol/l) 19.7 ± 20.5 (3.2–112.0) 23.1 ± 21.2 (3.2–108.0) 
Insulin sensitivity (mg · kg FFM−1 · min−1)"* 11.0 ± 5.9 (1.1–24.2) 13.2 ± 8.0 (1.9–40.1) 
Total cholesterol§ 157.0 ± 28.8 (76.0–232.0) 166.3 ± 31.6 (84.0–258.0) 
Triglycerides§ 76.8 ± 33.3 (32.0–164.0) 112.6 ± 65.7 (36.0–395.0) 
HDL§ 48.0 ± 11.7 (27.0–97.8) 46.6 ± 10.3 (28.8–78.7) 
LDL§ 93.7 ± 26.6 (22.0–167.0) 97.0 ± 27.6 (35.0–189.0) 

Data are means ± SD (range).

*

Obtained from n = 80 and n = 72 in African Americans and Caucasians, respectively.

P < 0.05;

P = 0.05;

§

n = 82 in African Americans. FFM, fat free mass.

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