CHAPTER 11 MUSCLE – part 1

Concentric: Biceps, Upper Back Muscles, Deltoid (Back 1/3) Eccentric: Chest Muscles, Triceps, Deltoid (Front & Mid 1/3) Roles of Muscles. Four Roles Muscles Play. Agonist. Antagonist. Stabilizer or Fixator. Neutralizer or Synergist. Definitions. Agonist. Muscles that concentrically contract to cause a movement. ................
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