A Short Detail on Muscle Contraction
Motor unit summation, or recruitment, controls the force of contraction regarding skeletal muscle tissue. Before the skeletal muscle is stimulated, there is a natural skeletal muscle tone that is present. This skeletal muscle tone keeps the muscles firm, stabilize joints, maintains posture, and readies the body to respond to stimuli. This contraction type can be likened to isometric contractions. Stimuli that will not produce an observable change in contraction strength beyond this tone is deemed sub-threshold stimuli. (more…)
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