Table 1 Muscle fibre type (MFT-I, IIA, and IIX) percentages (mean ± SD) for each muscle examined in 11 horses (5 Quarter horses, 4 Arabians, and 2 Thoroughbreds); ranked by the MFT-I percentage
Muscle | N | MFT-I Mean % | MFT-IIA Mean % | MFT-IIX Mean % |
|---|---|---|---|---|
SCDM P | 7 | 84.1 ± 18.4 | 11.4 ± 10.7 | 4.5 ± 9.3 |
Diaphragm P | 8 | 72.4 ± 12.5 | 27.6 ± 12.5 | 0.0 ± 0.0 |
Psoas minor | 7 | 56.4 ± 3.6 | 25.6 ± 10.5 | 18.0 ± 12.0 |
Multifidus 3 | 8 | 54.1 ± 10.7 | 31.8 ± 84.7 | 14.1 ± 8.9 |
Multifidus 1 | 6 | 47.1 ± 20.7 | 25.3 ± 7.9 | 27.6 ± 8.3 |
Multifidus 4 | 7 | 47.3 ± 14.7 | 37.7 ± 8.4 | 14.9 ± 11.6 |
Multifidus 2 | 10 | 41.2 ± 13.2 | 30.0 ± 10.1 | 28.8 ± 19.1 |
Multifidus 5 | 8 | 37.0 ± 9.5 | 31.3 ± 9.1 | 31.7 ± 14.4 |
SCDL | 9 | 41.4 ± 13.3 | 45.3 ± 11.6 | 13.4 ± 12.8 |
Psoas major | 10 | 30.1 ± 10.0 | 29.4 ± 10.0 | 50.5 ± 12,8 |
Iliocostalis | 9 | 18.2 ± 7.7 | 23.3 ± 6.6 | 58.5 ± 10.7 |
Biceps femoris | 9 | 17.3 ± 6.2 | 28.8 ± 11.8 | 53.9 ± 15.4 |
Longissimus | 10 | 14.1 ± 4.2 | 27.4 ± 5.3 | 58.5 ± 8.9 |
Gluteus medius | 6 | 10.0 ± 5.1 | 22.2 ± 6.8 | 67.9 ± 7.3 |