Table 1.

Subject characteristics

	Men	Women	P Value
Age, yr	38±2	37±2	0.75
Body mass index, kg/m2	25.5±1.0	25.0±0.9	0.75
Body mass, kg*	78.5±4.5	68.4±1.8	0.05
Fat-free mass, kg*	62.1±2.8	46.2±2.0	<0.001
Appendicular muscle mass, kg*	27.1±1.3	17.8±1.1	<0.001
SHBG, nmol/l	165±19	309±33	0.002
Testosterone, ng/ml	5.22±0.46	0.43±0.09	<0.001
Progesterone, ng/ml	0.40±0.07	4.61±1.57	0.02
17β-Estradiol, pg/ml	25.4±1.8	56.5±10.9	0.01

Values are means ± SE. SHBG: sex-hormone binding globulin.

^*Measured by dual-energy X-ray absorptiometry as described in Experimental protocol.