. Author manuscript; available in PMC: 2015 Aug 22.

Published in final edited form as: Exp Gerontol. 2011 Nov 4;47(1):100–108. doi: 10.1016/j.exger.2011.10.011

Table 2.

Effects of aging, hindlimb suspension and re-loading on body weight (BW), gastrocnemius muscle wet weight (MW) and gastrocnemius muscle weight to body weight ratio (MW/BW) in Fischer344×Brown Norway rats at 6 and 32 months of age.

Age	6-month				32-month
Treatment	Control	HS	HS + 7-day	HS +14-day	Control	HS	HS + 7-day	HS +14-day
BW (g)	416 ± 10^b	325 ± 8^a	340 ± 10^a	355 ± 11^a	580 ± 19^c	463 ± 16^b	437 ± 6^b	450 ± 9^b
MW (g)	2.16 ± 0.05^e	1.42 ± 0.03^b	1.57 ± 0.05^c	1.82 ± 0.06^d	1.58 ± 0.04^bc	1.04 ± 0.03^a	1.12 ± 0.03^a	1.18 ± 0.08^a
MW/BW (mg/g)	5.11 ± 0.04^e	4.40 ± 0.05^c	4.67 ± 0.05^d	5.10 ± 0.03^e	2.75 ± 0.11^b	2.25 ± 0.06^a	2.65 ± 0.04^b	2.62 ± 0.18^b

Values are means±SEM (n=8).

^a,b,c,d,eDifferent letters are significantly different from each other (p<0.05 by Tukey’s Multiple Comparison Test). The muscle weight is reported as the average weight of muscles from two legs. Control, non-suspended control; HS, 14 days of HS; HS+7, 14 days of HS followed by 7 days of ambulatory re-loading; HS+14, 14 days of HS followed by 14 days of ambulatory re-loading.