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.
One of your quadricep muscles, the rectus femoris, helps to flex your hip. Other hip flexors include the iliopsoas muscles in your upper thigh and lower back; the tensor fasciae latae on your outer hips; the adductor longus, adductor brevis and pectineus along your upper, inner thighs; and the sartorius.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.