NSCA - CSCS - Chapter 2 with Certified Solutions

NSCA - CSCS - Chapter 2 with Certified Solutions concentric muscle action a muscle action in which the muscle shortens because the contractile force is greater than the resistive force. The forces are generated within the muscle and acting to shorten it are greater than the external forces acting as its tendons to stretch it distal away from the center of the body dorsal toward the posterior of the body eccentric muscle action a muscle action in which the muscle lengthens because the contractile for is less than the resistive force. The forces generated within the muscle and acting to shorten it are less than the external forces acting as its tendons to stretch it fibrous attachment a band of tough, inelastic fibrous tissues that connects a muscle with its bony attachment first-class lever a lever for which the muscle force ad resistive force act on opposite sides of the fulcrum fleshy attachment a form of muscle attachment in which the epimysium is continuous with the perimysium of the muscle fluid resistance the resistive force encountered by an object moving through a fluid (liquid or gas), or by a fluid moving past or around an object or through an opening form drag a form of fluid resistance that results from the way in which a fluid presses against the front or rear of an object passing through it friction the resistive force encountered when one attempts to move an object while it is pressed against another frontal plane the plane running parallel to the long axis of the body fulcrum the pivot point of a level inertial force a force opposite in direction to an accelerating force acting on a body; equal to the product of the accelerating force and the mass of the body acceleration the change in velocity per unit time agonist also called the prime mover. The muscle most directly involved in bringing about a movement anatomical position the body is erect, the