Table 2.
Mitochondrial morphological parameters of aged hearts after 8 weeks of swimming training.
| Parameter | Mean ± SEM | |||
|---|---|---|---|---|
| Sham (n = 243) |
MI-sedentary (n = 257) |
MI + 15' ST (n = 240) |
MI + 60' ST (n = 251) |
|
| Area (μm2) | 0.65 ± 0.05 | 1.17 ± 0.12∗ | 0.64 ± 0.06# | 1.11 ± 0.15∗ ,& |
| Aspect ratio | 1.97 ± 0.11 | 1.15 ± 0.21∗∗ | 2.35 ± 0.26∗ ,## | 1.53 ± 0.08∗ ,& |
| Circularity | 0.73 ± 0.03 | 0.88 ± 0.03∗ | 0.67 ± 0.04 | 0.77 ± 0.02 |
| Roundness | 0.52 ± 0.04 | 0.73 ± 0.05∗∗ | 0.50 ± 0.05# | 0.68 ± 0.04& |
| Solidity | 0.97 ± 0.01 | 0.84 ± 0.02 | 0.91 ± 0.01 | 0.96 ± 0.01 |
∗ P < 0.05, ∗∗ P < 0.01 versus the sham group; # P < 0.05, ## P < 0.01 versus the MI-sedentary group; & P < 0.05 versus the MI + 15' ST group. N = 243–257.