Table 1.
Whole body metabolic health measures and skeletal muscle enzymatic activity in sedentary and exercise trained LCR/HCR rats and initial running capacity
| LCR SED | LCR EXT | HCR SED | HCR EXT | |
|---|---|---|---|---|
| Initial running capacity, m | 282 ± 12 | 276 ± 17 | 1927 ± 57*† | 1968 ± 64 |
| Body weight, g | 497 ± 19 | 432 ± 10* | 331 ± 8*† | 317 ± 14 |
| Fat pad weight, g | 6.4 ± 0.3 | 4.2 ± 0.5* | 2.1 ± 0.1 | |
| Fasting blood glucose | 6.2 ± 0.1 | 5.7 ± 0.2 | 5.3 ± 0.1* | |
| Serum nonesterified fatty acids, mM | 0.35 ± 0.04 | 0.18 ± 0.03* | 0.26 ± 0.03* | 0.20 ± 0.02 |
| Citrate synthase activity, μmol·min−1·g dry weight−1 | 46.0 ± 2.3 | 45.9 ± 1.8 | 61.5 ± 4.8*† | 66.8 ± 2.8*† |
| β-hydroxyacyl CoA dehydrogenase activity, μmol·min−1·g wet weight−1 | 4.9 ± 0.4 | 4.6 ± 0.2 | 6.2 ± 0.4*† | 6.3 ± 0.4*† |
Values are means ± SE. SCR, low aerobic capacity runners; HCR, high aerobic capacity runners; SED, sedentary; EXT, exercixed trained. Significant differences between groups:
*
P < 0.05 vs. LCR SED;
†
P < 0.05 vs. LCR EXT (n = 9–10 rats/group).