Table 4.

Body Composition Analysis by Deuterium Oxide Dilution Method^*

	No Exercise		Exercise
	Placebo	Testosterone	Placebo	Testosterone
Fat-free mass, kg
Baseline	60.1 (2.0)	62.9 (3.3)	57.9 (2.3)	55.7 (2.8)
Week 16	59.6 (2.3)	66.9 (2.9)	59.9 (2.5)	57.3 (2.9)
Change from baseline	−0.4 (1.0)	2.9 (1.0)	2.0 (0.9)	1.6 (0.8)
P value	.67	.05	.04	<.09
Fat mass, kg
Baseline	16.6 (2.4)	14.2 (2.2)	15.1 (3.1)	13.3 (3.0)
Week 16	16.5 (2.5)	14.2 (2.8)	15.7 (3.2)	12.4 (3.0)
Change from baseline	−0.1 (0.7)	0.2 (0.6)	0.6 (0.5)	0.9 (0.7)
P value	.89	.81	.24	.19
Total body water, kg
Baseline	43.8 (1.5)	45.9 (2.4)	42.3 (1.7)	40.7 (2.0)
Week 16	43.5 (1.7)	48.9 (2.1)	43.7 (1.8)	41.9 (2.1)
Change from baseline	−0.3 (0.7)	2.1 (0.7)	1.5 (0.6)	1.2 (0.6)
P value	.67	.05	.01	.07
Ratio of total body water by deuterium oxide dilution to fat-free mass by DEXA
Baseline	0.78 (0.02)	0.77 (0.02)	0.77 (0.05)	0.79 (0.03)
Week 16	0.77 (0.03)	0.78 (0.02)	0.75 (0.04)	0.78 (0.02)
Change from baseline	−0.02 (0.02)	0.01 (0.01)	−0.01 (0.01)	−0.02 (0.02)
P value	.23	.71	.35	.35

^*The data on each day represent the mean (SEM) of all available values on that day. However, the change represents the difference between paired values only. DEXA indicates dual-energy x-ray absorbtiometry.