Table 2.
Indices of the microvascular supply of the muscle fibres before and after training
| Before | After | |
|---|---|---|
| Total | ||
| Global microvessel indices | ||
| CD | 333 ± 69 | 357 ± 61 |
| C/F | 1.7 ± 0.4 | 2.0 ± 0.4* |
| Individual fibre microvessel indices | ||
| CAF | 4.8 ± 1.3 | 5.7 ± 1.4 |
| CAFA | 0.9 ± 0.1 | 1.0 ± 0.3 |
| C/Fi | 1.8 ± 0.6 | 2.1 ± 0.6* |
| CFPE | 5.8 ± 1.5 | 6.7 ± 1.5 |
| LC/PF | 16 ± 7 | 25 ± 10*** |
| Type I | ||
| CAF | 5.1 ± 1.3 | 5.9 ± 1.2 |
| CAFA | 0.8 ± 0.3 | 1.0 ± 0.4 |
| C/Fi | 1.9 ± 0.6 | 2.2 ± 0.5 |
| CFPE | 6.1 ± 1.4 | 6.7 ± 1.7 |
| LC/PF | 18 ± 7 | 25 ± 10** |
| Type IIa | ||
| CAF | 4.2 ± 1.4 | 5.4 ± 1.9 |
| CAFA | 0.8 ± 0.3 | 0.8 ± 0.4 |
| C/Fi | 1.5 ± 0.5 | 2.1 ± 1.0* |
| CFPE | 5.0 ± 1.5 | 6.2 ± 2.0 |
| LC/PF | 13 ± 7 | 22 ± 9** |
| Type IIx | ||
| CAF | 4.0 ± 1.2 | 4.8 ± 2.1 |
| CAFA | 0.8 ± 0.4 | 0.8 ± 0.5 |
| C/Fi | 1.4 ± 0.4 | 1.9 ± 0.9 |
| CFPE | 5.0 ± 1.2 | 5.3 ± 2.7 |
| LC/PF | 13 ± 5 | 20 ± 9 |
The data are means ± s.d. CD: capillary density (cap mm−2), C/F: capillary-to-fibre ratio (cap); CAF: number of capillaries around single fibres (cap); CAFA: CAF relative to the area of the fibre (cap (1000 μm)−2); C/Fi: individual capillary-to-fibre ratio (cap); CFPE: capillary-to-fibre perimeter exchange (cap (1000 μm)−1); LC/PF: length of the contact between microvessels and the fibre/perimeter of the fibre (%).
*
P < 0.05
**
P < 0.01
***
P < 0.001.