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 main adductors of the hip are the adductor magnus muscle, the adductor longus muscle, and the adductor brevis muscle. These adductors are assisted by the gracilis and the pectineus. The gracilis helps to flex the leg at the knee.