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| Sed | EXT | |
| Body weight (g) | 266 ± 13 | 259 ± 11 |
| Heart weight (g) | 0.75 ± 0.06 | 0.84 ± 0.06** |
| Body:heart ratio | 2.8 ± 0.15 | 3.2 ± 0.18** |
Values are mean ± SD (n = 10 rats); **p < 0.05, significantly different from the sedentary group; Sed: sedentary and EXT: exercise-trained rats.
