TABLE 1

Body composition and basal metabolic characteristics of SD rats

3-month-old9-month-old20-month-old20-month-old VF−20-month-old CR
n66966
Body weight (g)322 ± 14.3*583 ± 17.3585 ± 28572 ± 22374 ± 5.2*
Fat mass (g)26.6 ± 2.9*170.1 ± 7.1179.8 ± 9.8166.8 ± 23.429.8 ± 6.2*
Total VF (g)4.9 ± 0.3*32.2 ± 5.330.9 ± 2.38.0 ± 1.05.3 ± 0.6*
Insulin (ng/ml)1.5 ± 0.33.1 ± 0.63.0 ± 0.51.4 ± 0.41.4 ± 0.2
Glucose (mmol/l)8.1 ± 0.28.1 ± 0.28.0 ± 0.37.2 ± 0.37.2 ± 0.1
FFAs (mmol/l)0.7 ± 0.1*1.3 ± 0.11.3 ± 0.11.2 ± 0.20.7 ± 0.1*
  • Data are means ± SE.

  • *

    * P < 0.05 vs. 9-month-old, 20-month-old, and 20-month-old VF− rats;

  • P < 0.05 vs. all other groups;

  • P < 0.05 vs. 9-month-old and 20-month-old rats.