isotonic contraction

isotonic contraction
Contraction of a muscle, the tension remaining constant. Since the contractile force is proportional to the overlap of the filaments, and the overlap is varying, the numbers of active cross-bridges must be changing.

Dictionary of molecular biology. 2004.

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  • Isotonic (exercise physiology) — In an isotonic contraction, tension rises and the skeletal muscle s length changes. Lifting an object off a desk, walking, and running involve isotonic contractions.There are two types of isotonic contractions: (1) concentric and (2) eccentric.… …   Wikipedia

  • contraction — 1. A shortening or increase in tension; denoting the normal function of muscle. 2. A shrinkage or reduction in size. 3. Heart beat, as in premature c..beat. [L. contractus, drawn together] after c …   Medical dictionary

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  • Isotonic — The term isotonic may refer to; * Isotonic muscle exercise and Weight training * Isotonic (exercise physiology) for the term associated with muscle contraction * An isotone in nuclear physics * Isotonic solutions, solutions that have equal… …   Wikipedia

  • isotonic — 1. Relating to isotonicity or isotonia. 2. Having equal tension; denoting solutions possessing the same osmotic pressure; more specifically, limited to solutions in which cells neither swell nor shrink. Thus, a solution that is isosmotic with… …   Medical dictionary

  • isotonic muscle contraction — izotoninis raumens susitraukimas statusas T sritis Kūno kultūra ir sportas apibrėžtis Raumens susitraukimas, kurio metu raumeninės skaidulos keičia savo ilgį (patrumpėja ir pastorėja), o įtampa beveik nekinta, pvz., tolygiai, vienodu greičiu… …   Sporto terminų žodynas

  • isotonic — adjective Etymology: International Scientific Vocabulary Date: 1891 1. of, relating to, or being muscular contraction in the absence of significant resistance, with marked shortening of muscle fibers, and without great increase in muscle tone… …   New Collegiate Dictionary

  • isotonic — isotonicity /uy seuh teuh nis i tee/, n. /uy seuh ton ik/, adj. 1. Also, isosmotic. Physical Chem. noting or pertaining to solutions characterized by equal osmotic pressure. Cf. hypertonic (def. 2), hypotonic (def. 2). 2. Physiol …   Universalium

  • isotonic exercise — active exercise without appreciable change in the force of muscular contraction, with shortening of the muscle …   Medical dictionary

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