A muscle can exert force while remaining the same length (e.g., when you hold a heavy bucket of cattle feed in a fixed position). This is known as:

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Quizplus · Accepted Answer

Isometric contraction is when a muscle can exert force without changing its length. This occurs when there is resistance against the force being applied, such as holding a weight in a fixed position. Geometric contraction and isometric relaxation are not recognized terms in muscle physiology. Shortening contraction refers to a muscle that is actively shortening while generating force.

A Muscle Can Exert Force While Remaining the Same Length