shoulder horizontal flexion agonist and antagonist Learn vocabulary, terms, and more with flashcards, games, and other study tools. [16][19][20], The stability of the ST joint relies on the coordinated activity of the 18 muscles that directly attach to the scapula. In addition, these torque curves confirm that the peak torque ratios are systematically calculated from noncorresponding angle values, which are usually recorded at both ends of the range of motion. Gray's Anatomy (41tst ed.). Medicine & Science in Sports & Exercise, 21(4), 450-462.Fees, M., Decker T., Snyder-Mackler, L., Axe ,MJ. > Lower the barbell toward your chest, by flexing your elbows while maintaining scapulae retraction. . Ethical approval was obtained from the Research Ethics Committee of the Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal. A question often asked is to identify the Agonist, Antagonist, Fixator & Synergist Muscles. A significant modification of the F/E (F=66.3; P<0.001) and Ab/Ad (F=100.6; P<0.001) torque ratios was observed according to the 15 angle subgroup evaluated. Philadelphia, PA: Lippincott Williams & Wilkins. The transverse humeral ligament extends horizontally between the tubercles of the humerus. This wide ligament lies deep to, and blends, with the tendon of subscapularis muscle. In: Pike C, ed. Usually, ratios are evaluated using the isokinetic peak torque of the agonist muscle compared to that of the antagonist muscle, in concentric or eccentric mode, without reference to the angles (segment positions) where these peak torques are obtained.7 Most likely, peak torques do not occur at the same angle for the agonist and antagonist muscle groups irrespective of the mode of contraction (eccentric or concentric). The first is the rotator interval, an area of unreinforced capsule that exists between the subscapularis and supraspinatus tendons. the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in The Agonist is the main muscle moving in an exercise ( sometimes called the prime mover). latissimus dorsi, teres major. An optimal level of external stabilization was provided to ensure that participants exerted maximum effort. Angle subgroup torque ratio analysis leads to a better estimation of the balance or imbalance between the agonist and antagonist muscle groups over a functional or selected range of motion than does traditional peak torque ratio analysis. For all movements investigated, the dynamometer was set to isokinetic passive mode and participants were asked to concentrically contract as forcefully as possible in the desired direction. Neer CS. Specifically for the shoulder, this could allow rehabilitation specialists to gain a better insight into the U/E strength-generating capability among individuals with SCI and locate potential muscle imbalances affecting specific portions of the tested range of motion.
