The force generated by a single muscle fiber can be increased by: A) increasing the frequency of action potentials only. B) increasing muscle length beyond optimal only. C) increasing the asynchrony of recruitment only. D) increasing the frequency of action potentials and increasing muscle length beyond optimal only.
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This is known as temporal summation. Increasing muscle length beyond optimal can actually decrease the force generated by a single muscle fiber. This is because the optimal length for force generation is when the muscle fibers have the greatest overlap of actin Show more…
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