isotonic contraction
physiology
Quick Summary
An isotonic contraction occurs when a muscle shortens against little or no resistance. This type of contraction involves movement, as opposed to isometric contractions where muscles strain against an unmoving resistance. In an isotonic condition, the muscle shortens and produces a pulling motion. The velocity of shortening is determined by the size of the load. This principle applies to various muscle types, including striated, cardiac, and smooth muscles.1234
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