TABLE 2.

Body composition before the experimental infusion trial in lean and obese middle-aged men¹

	Lean	Obese
Lean body mass, kg (%)	57.7 ± 1.6 (75 ± 1)	76.8 ± 2.7 (66 ± 2)*
Appendicular lean mass, kg (%)	26.1 ± 0.9 (34 ± 1)	34.5 ± 1.4 (30 ± 1)*
Fat mass, kg (%)	16.4 ± 0.7 (21 ± 1)	38.8 ± 3.8 (32 ± 2)*
Trunk:limb fat mass ratio	1.1 ± 0.1	1.5 ± 0.1*
Android fat mass, kg (%)	1.4 ± 0.1 (25 ± 2)	4.6 ± 0.5 (40 ± 2)*
Gynoid fat mass, kg (%)	2.7 ± 0.1 (23 ± 1)	5.5 ± 0.7 (30 ± 2)*
Android:gynoid fat ratio	1.1 ± 0.1	1.4 ± 0.04*
Visceral adipose tissue, g	363 ± 28	917 ± 59*
Left leg thigh CSA, cm2	144 ± 4	178 ± 5*
Right leg thigh CSA, cm2	146 ± 5	181 ± 5*
Left quadriceps CSA, cm2	77 ± 2	88 ± 3*
Right quadriceps CSA, cm2	79 ± 3	91 ± 4**
Left fat CSA, cm2	38 ± 4	95 ± 13*
Right fat CSA, cm2	38 ± 4	95 ± 14*
Left leg thigh, HU	51 ± 1	45 ± 1*
Right leg thigh, HU	52 ± 1	46 ± 1*
Left leg quadriceps, HU	55 ± 1	51 ± 1*
Right leg quadriceps, HU	55 ± 1	51 ± 1*

¹Values are mean ± SEM, n = 12/group. Data were analyzed by unpaired Student's t test. *,**Different from lean: *P < 0.05, **P < 0.1. CSA, cross-sectional area; HU, Hounsfield Units.