Table 5.
Distribution of fiber types in PCA muscles of the rat, rabbit, cat, and baboon
| Fiber type | Rat | Rabbit | Cat | Baboon |
|---|---|---|---|---|
| Slow | 7.4 ± 1.4a | 36.0 ± 1.7g | 29.8 ± 1.8f | 42.5 ± 3.3 |
| Slow/2a | 0 | 0.1 ± 0.1 | 0.7 ± 0.3 | 0.3 ± 0.4 |
| 2a | 16.6 ± 2.2 | 21.6 ± 2.6c | 44.7 ± 3.4 | 31.6 ± 4.3 |
| 2a/2x | 0.6 ± 0.2 | 0.7 ± 0.2c | 20.7 ± 3.6d | 3.3 ± 0.7 |
| 2x | 29.1 ± 1.7 | 23.1 ± 3.2c | 3.7 ± 1.8e | 22.3 ± 4.4 |
| 2x/2b | 0b | 18.5 ± 2.9b | 0.4 ± 0.3 | 0 |
| 2b | 44.6 ± 1.6a | 0 | 0 | 0 |
| 2x/2b/eo | 0 | 0 | 0 | 0 |
| 2b/eo | 1.9 ± 1.0 | 0 | 0 | 0 |
Footnotes indicate statistical significance (ap<0.0001; bp<0.001; cp<0.002; dp<0.005; ep<0.01; fp<0.02; gp<0.05; t-test) compared with the value on the right.
Distribution of fiber types in PCA muscles of the rat, rabbit, cat, and baboon. Data for the rat are from (Rhee et al. 2004) and are included for comparison. The fiber types are arranged in the order of increasing speed. Note that pure eo fibers are absent. Values are mean percentages ± SEM; n=4 for all species.