Table 6 Functional characteristics of muscles in the flat-back posture
From: Non-structural misalignments of body posture in the sagittal plane
| Muscle | Lengthened | Shortened | Hypoactive | Hyperactive |
|---|---|---|---|---|
| Erector spinae part thoracic (upper part) | + | + | ||
| Erector spinae (lumbar part) | + | + | ||
| Iliacus | + | + | ||
| Psoas | + | + | ||
| Two-joint hip flexors | + | + | ||
| Suboccipital | + | + | ||
| Sternocleidomastoid | + | + | ||
| Scaleni | + | + | ||
| Erector spinae part thoracic (lower part) | + | + | ||
| Gluteus maximus | + | + | ||
| Hamstrings | + | + |