isometric

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i·so·met·ric / ˌīsəˈmetrik/ • adj. 1. of or having equal dimensions. 2. Physiol. of, relating to, or denoting muscular action in which tension is developed without contraction of the muscle. 3. (in technical or architectural drawing) incorporating a method of showing projection or perspective in which the three principal dimensions are represented by three axes 120° apart. 4. Math. (of a transformation) without change of shape or size. DERIVATIVES: i·so·met·ri·cal·ly / -ik(ə)lē/ adv. i·som·e·try / īˈsämitrē/ n. (in sense 4).

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isometrics A form of strength training in which muscles are contracted strongly without producing significant movement, by opposing themselves against a fixed object or, more commonly, the same action of the opposite limb or the antagonist muscles of the same limb. The term is derived from the muscle physiologist's adjective, ‘isometric’, describing a contraction in which the muscle does not change length. Contrast ‘isotonics’ and ‘isokinetics’: both of these develop strength over the whole range of joint angles, which isometrics cannot do.

Neil C. Spurway

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i·so·met·rics / ˌīsəˈmetriks/ • pl. n. a system of physical exercises in which muscles are caused to act against each other or against a fixed object. Also called isometric exercise.

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isometric (I-soh-met-rik) adj. of or denoting muscular contraction that does not cause muscle shortening. i. exercise see exercise.

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isometric (from Gr. isos, equal). Having the same rhythm in every v. or part (i.e. proceeding in chords rather than in freely moving counterpoint).

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isometric See CUBIC.