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Definition of Exercise, isometric

Exercise, isometric: Exercise involving muscular contractions without movement of the involved parts of the body. Isometric exercise is one method of muscular exercise. In contrast, isotonic exercise occurs when a contracting muscle shortens against a constant load, as when lifting a weight.

Isometric comes from the Greek "iso-", equal + "metron", measure = maintaining the same measure, dimension or length.

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=10187
Last Editorial Review: 6/14/2012

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