Knickerbocker's theory emphasizes on the interdependence of major players in the same industry. Imitation is the name of the game where firms try to match each other's moves to keep each other in check so as not to allow a rival gain a competitive advantage over others.
hamstrings. extend the hip and flex the knee against resistance and are important knee stabilizers. help control hip flexion in weightbearing position by contracting eccentrically when the flexion occurs in same direction as gravity as dead lift or hip=hinge position.
The Hip Flexors. Your hip flexors, or iliopsoas, are the muscles that stretch from your lower spine, through your pelvis, and down to your thighs. They comprise two primary muscles: the iliacus and the psoas major. These muscles work to lift your thighs, contracting and releasing with every stride.