Table 2.

Fasting plasma substrate and insulin concentrations and HOMA-IR

	Nonobese	Obese
Glucose concentration, mM	4.5 ± 0.1	4.9 ± 0.2
Fatty acid concentration, mM	0.50 ± 0.07	0.44 ± 0.05
Triglyceride concentration, mM	0.63 ± 0.07	0.86 ± 0.08
Insulin concentration, μU/ml	10.5 ± 1.2	19.6 ± 3.8*
HOMA-IR	2.1 ± 0.2	3.9 ± 0.6**

Values are means ± SE. HOMA-IR, homeostasis model assessment of insulin resistance. Plasma samples collected after an overnight fast.

^*P < 0.05;

^**P < 0.01, obese vs. nonobese.