When a muscle is suddenly stretched, resulting in an eccentric contraction that is followed by a concentric contraction of the same muscle, the total force generated in the concentric contraction is greater than that of an isolated concentric contraction.

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This phenomenon is known as the stretch-shortening cycle (SSC), where the pre-stretch or eccentric phase stores elastic energy in the muscle and tendon structures, which is then released during the subsequent concentric contraction, leading to an increase in total force output.

When a Muscle Is Suddenly Stretched, Resulting in an Eccentric