Table 1.
Animal characteristics.
| Young-Sed-SAMP1 (n = 10) | Aged-Sed-SAMP1 (n = 10) | Aged-AT-SAMP1 (n = 10) | Aged-RT-SAMP1 (n = 10) | |
|---|---|---|---|---|
| Body weight (g) | 35.3 ± 1.1 | 36.4 ± 1.2 | 36.0 ± 3.7† | 33.9 ± 1.5†† |
| LV mass (mg) | 177.9 ± 13.1 | 196.2 ± 11.3 | 213.3 ± 6.2 | 182.7 ± 6.2 |
| LV mass/body weight (mg/g) | 5.0 ± 0.3 | 5.4 ± 0.3 | 6.4 ± 0.3† | 5.7 ± 0.2 |
| Adipose tissue mass (g) | 1.7 ± 0.1 | 1.4 ± 0.2 | 1.0 ± 0.2† | 1.2 ± 0.2 |
| Tibialis anterior muscle mass (mg) | 53.8 ± 0.7 | 49.2 ± 1.5 | 51.7 ± 1.6 | 58.3 ± 1.1††# |
| TA muscle mass/body weight (mg/g) | 1.5 ± 0.04 | 1.4 ± 0.06 | 1.5 ± 0.08 | 1.8 ± 0.04††# |
| Muscle citrate synthase activity (mol/min/gtissue) | 13.2 ± 0.8 | 11.1 ± 0.7* | 15.2 ± 0.4†† | 13.0 ± 0.7# |
| Food intake (g/day) | 3.5 ± 0.1 | 3.2 ± 0.1 | 4.2 ± 0.5†† | 3.2 ± 0.1# |
Values are means ± SEM. Young-Sed-SAMP1, young sedentary group; Aged-Sed-SAMP1, aged sedentary group; Aged-AT-SAMP1, aged aerobic training group; Aged-RT-SAMP1; aged resistance training group. LV, left ventricular.
*
p < 0.05 vs.Young-Sed;
†
p < 0.05 vs. Aged-Sed-SAMP1;
††
p < 0.01 vs. Aged-Sed-SAMP1;
#
p < 0.05 vs. Aged-AT-SAMP1.