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11. Magnitude, direction, point of application, and line of action are the four components of force.●True●False12. Newton's third law of motion deals with force and its relationship to mass and acceleration.13. A high development of the agonist-antagonist function is essential to the development of dynamic balance.14. The hamstrings muscles are two-joint muscles that act at the knee and ankle.
15. Given certain constraints, strength is our ability to contract our muscles with maximum force.●True●False16. The Valsalva maneuver involves expiring against a closed glottis and, when combined with contracting muscles of theabdomen and ribcage, creates rigidity in the entire torso.17. The term "anaerobic" indicates the presence of oxygen.18. Cross training utilizes one mode of training to develop a specific component of fitness.19. The Golgi tendon organ detects the magnitude of mechanical stress at the musculotendinous junction.●True●False20. Decreased temperature helps to facilitate increases in ROM.