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 large gluteus maximus in your rear is the main muscle involved in hip extension. You extend your hips when your legs move backward while you sprint. Three of the four hamstring muscles also help to extend your hips, along with the adductor magnus muscle on the inside of each thigh.he four quadriceps muscles in the front of each thigh are primarily responsible for extending your knee. When your foot moves forward and your leg straightens during your sprinting stride, that's the quadriceps hard at work.