The strongest muscle contractions are normally achieved by_________ .

Question

Quizplus · Accepted Answer

Increasing the stimulation up to the maximal stimulus results in the strongest muscle contractions. This is because at maximal stimulation, all of the muscle fibers in the motor unit are firing, resulting in a stronger contraction. Option A is incorrect because increasing stimulus above threshold only results in more motor units being recruited, not necessarily stronger contractions of each individual muscle fiber. Option C is incorrect because recruiting small and medium muscle fibers only results in a partial contraction of the muscle, not a maximal contraction. Option D is also incorrect because the treppe phenomenon refers to the gradual increase in strength of a muscle contraction due to repeated stimulation, not the strongest possible muscle contraction.

The Strongest Muscle Contractions Are Normally Achieved By_________