Table 1.

Effect of hindlimb suspension and irradiation on body weight and muscle mass

	LB	HS	IRR	HS+IRR
Body weight, g	17.1 ± 0.4	21.2 ± 0.6*	17.1 ± 0.4	21.2 ± 0.6*
Gastrocnemius mass
Absolute, mg	74 ± 2.4	62 ± 2.7*	76 ± 1.5	62 ± 2.4*
Relative, mg/g	4.3 ± 0.1	2.9 ± 0.2*	4.4 ± 0.1	2.9 ± 0.1*

Values are means ± SE. Body weight and muscle mass were measured when animals died. Irradiation was performed on the right leg; the left leg served as an intra-animal control. Body weights are the same for treatment groups within the same animal. Relative muscle mass is calculated as mg of muscle/g body weight.

LB, load bearing; HS, hindlimb suspension; IRR, irradiation.

^*Signifies main effect of HS.