Table 1. Changes in body weights, muscle weights and liver weights in 8-month, 18-month, 29-month and 37-month old ad libitum (AL) and calorie restricted rats.

Age	8 months		18 months		29 months		37 months
Diet	AL	CR	AL	CR	AL	CR	AL	CR
Body weights (g)	377±15 c	268±5 a	479±6 d	307±3 b	538±7 e	318±3 b	486±10 d	270±4 a
MW/BW (g/100 g)	0.50±0.01 de	0.58±0.01 f	0.44±0.01 c	0.53±0.01 e	0.33±0.01 b	0.47±0.01 cd	0.15±0.01 a	0.30±0.02 b
LW/BW (g/100 g)	2.70±0.03 ab	2.79±0.02 abc	2.78±0.06 abc	2.60±0.05 a	2.78±0.06 abc	2.66±0.04 ab	2.96±0.10 c	2.89±0.07 bc

Values are means±SEM (n = 9). ^a,b,c,d,e,fDifferent letters indicate values are significantly different (p<0.05 by Tukey's Multiple Comparison Test). MW/BW = gastrocnemius muscle-to-body weight ratio. LW/BW = liver weight-to-body weight ratio.