The contribution of the psoas during extension has been shown to be minor, but the psoas paradox remains an interesting caveat of the function of the muscle.

Psoas muscles connect the torso and the lower body. Discover the psoas major muscle's function and its crucial role in posture and movement.

The iliopsoas is a muscle group composed of the the psoas major and the iliacus that is essential for hip flexion. Here's how to train it for better movement.

The psoas (including iliopsoas and in some people there is a psoas minor) is the only muscle to cross over both the upper and lower body. It attaches your spine to your thighs while grabbing onto your ...

The pubis has a prominent tubercle for the psoas minor muscle (Fig. 4a), a feature otherwise present only in living monotremes 13 but absent in living therians and all other Mesozoic mammals for ...