Table 2.
Cross‐sectional areas (μm2) of the muscle fibres in the iliopsoas muscle
| Type | n | Left | Right | ||||
|---|---|---|---|---|---|---|---|
| Iliacus | Psoas major | P a | Iliacus | Psoas major | P a | ||
| I | 10 | 1950.28 ± 429.77 | 1361.38 ± 293.14 | < 0.05 | 2089.77 ± 543.08 | 1332.08 ± 228.05 | < 0.001 |
| IIA | 10 | 1710.69 ± 362.68 | 1297.98 ± 318.35 | < 0.05 | 1721.01 ± 425.92 | 1273.05 ± 186.91 | < 0.05 |
| IIB | 10 | 4476.09 ± 827.71b | 3752.27 ± 780.66c | 0.059 | 4089.42 ± 656.30b | 3850.66 ± 519.93c | 0.379 |
| IIX | 10 | 2010.47 ± 536.33 | 1761.27 ± 302.03 | 0.217 | 2060.43 ± 586.03 | 1724.59 ± 298.49 | 0.123 |
Values are mean ± SD.
a
P‐value stands for the comparison of iliacus to psoas major muscle.
b
Type II B muscle fibres have a significantly larger CSAs compared with other muscle fibre types in the left and right iliacus muscle (P < 0.001).
c
Type II B muscle fibres have significantly larger CSAs compared with other muscle fibre types in the left and right psoas major muscle (P < 0.001).