Table 6 Pectoral muscle morphometry parameters
Morphometry parameters | Mean ± SEM |
|---|---|
Number of fibers per area± | 1277.7 ± 234.6 |
Number of type I (%) | 40.1 ± 3.1 |
Number of type II (%) | 59.9 ± 3.1 |
CSA all fibers (μm2) | 4574.8 ± 403.2 |
CSA type I (μm2) | 4044.8 ± 311.2 |
CSA type II (μm2) | 4954.0 ± 542.9 |
Perimeter all fibers (μm) | 296.0 ± 16.2 |
Perimeter type I (μm) | 276.9 ± 13.0 |
Perimeter type II (μm) | 309.6 ± 20.3 |
Major diameter all fibers (μm) | 101.2 ± 5.7 |
Major diameter type I (μm) | 94.9 ± 4.7 |
Major diameter type II (μm) | 105.9 ± 7.1 |
Minor diameter all fibers (μm) | 54.0 ± 2.9 |
Minor diameter type I (μm) | 51.3 ± 2.1 |
Minor diameter type II (μm) | 55.9 ± 3.7 |
Atrophy factor all fibers | 1.2 ± 0.4 |
Atrophy factor type I | 1.4 ± 0.2 |
Atrophy factor type II | 1.1 ± 0.6 |
Hypertrophy factor all | 4.5 ± 0.9 |
Hypertrophy factor type I | 2.7 ± 0.7 |
Hypertrophy factor type II | 5.9 ± 1.6 |