Table 4. Fibre type composition and capillary density in the vastus lateralis muscle of women and men.
Women | Men | |
---|---|---|
Fibre type composition (number percentage) | ||
″Type 1 | 67.9 ± 3.6** | 54.6 ± 2.8 |
″Type 2A | 23.3 ± 3.6 | 30.2 ± 2.0 |
″Type 2X | 8.7 ± 3.0 | 15.2 ± 3.0 |
Fibre type composition (area percentage) | ||
″Type 1 | 68.2 ± 3.0*** | 49.2 ± 2.9 |
″Type 2A | 24.2 ± 3.8* | 35.6 ± 2.2 |
″Type 2X | 7.6 ± 2.6 | 15.3 ± 3.1 |
Mean area per fibre (μm2) | ||
″Type 1 | 4267 ± 177 | 4490 ± 233 |
″Type 2A | 4407 ± 224*** | 5895 ± 189 |
″Type 2X | 4327 ± 473 | 5021 ± 339 |
Capillary density | ||
″Capillaries per fibre | 2.0 ± 0.2 | 2.2 ± 0.1 |
″Capillaries per mm2 | 435 ± 32* | 355 ± 17 |
Data are mean ± s.e.m. Sex difference
P < 0.05
P < 0.01
P < 0.001