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.
Your quadriceps at the front of your thighs extend your knees to help propel you off the floor. At the hips, your glutes and hamstrings contract to extend your hips for the jumping component. When you swing your legs out, your gluteus medius, gluteus minimize, tensor fasciae latae and sartorius are responsible.