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.
Several muscles, including the scalenes and sternocleido-. mastoid muscles of the neck and the pectoralis minor of the chest, raise the ribs. even more than occurs during quiet inspiration. Additionally, the back extends as. the thoracic curvature is straightened by the erector spinae muscles.