Range of motion

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It has been suggested that this article should be split into articles titled Range of motion (mechanical engineering) and Range of motion (biomechanics). (discuss) (March 2023)

Range of motion (or ROM) is the linear or angular distance that a moving object may normally travel while properly attached to another.

In biomechanics and strength training, ROM refers to the angular distance and direction a joint can move between the flexed position and the extended position. The act of attempting to increase this distance through therapeutic exercises (range of motion therapy—stretching from flexion to extension for physiological gain) is also sometimes called range of motion.

In mechanical engineering, it is (also called range of travel or ROT) used particularly when talking about mechanical devices, such as a sound volume control knob.