Proportions of cytochrome c oxidase (COX+) and succinate dehydrogenase (SDH+) fibres within the combination of myofibrillar adenosine trisphosphatase (mATPase) and multiple myosin heavy chain (MyHC) fibre type categories
| Fibre type | COX+fibres % | SD H+ fibres % | ||
| Controls | COPD | Controls | COPD | |
| I | 87.8 | 82.7 | 81.4 | 76.8 |
| I/IIA | 73.3 | 33.3* | 56.0 | 19.9* |
| IIA | 34.1 | 7.8** | 10.2 | 1.6* |
| IIA/IIX | 2.5 | 2.4 | 0.7 | 1 |
| IIX | 0 | 0.4 | 0 | 0.1 |
Significance of difference compared to controls: *: p<0.05; **: p<0.01