isometrics - meaning and definition. What is isometrics
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What (who) is isometrics - definition

STATIC CONTRACTION EXERCISE
Isometrics; Isometric contraction; Isymmetric tension; Isometric training; Isometrically; Static hold
  • core]] musculature. It may also be performed by balancing on the forearms.
  • obliques]].
  • weight lifter]] completes his lift he will combine dynamic leg movement with an isometric holding of the barbell.

isometrics         
Note: The form 'isometric' is used as a modifier.
Isometrics or isometric exercises are exercises in which you make your muscles work against each other or against something else, for example by pressing your hands together.
N-PLURAL
isometrics         
¦ plural noun a system of physical exercises in which muscles are caused to act against each other or against a fixed object.
Isometric exercise         
An isometric exercise is a form of exercise involving the static contraction of a muscle without any visible movement in the angle of the joint. The term "isometric" combines the Greek words isos (equal) and -metria (measuring), meaning that in these exercises the length of the muscle and the angle of the joint do not change, though contraction strength may be varied.

Wikipedia

Isometric exercise

An isometric exercise is a form of exercise involving the static contraction of a muscle without any visible movement in the angle of the joint. The term "isometric" combines the Greek words isos (equal) and -metria (measuring), meaning that in these exercises the length of the muscle and the angle of the joint do not change, though contraction strength may be varied. This is in contrast to isotonic contractions, in which the contraction strength does not change, though the muscle length and joint angle do.

The three main types of isometric exercise are isometric presses, pulls, and holds. They may be included in a strength training regime in order to improve the body’s ability to apply power from a static position or, in the case of isometric holds, improve the body’s ability to maintain a position for a period of time. Considered as an action, isometric presses are also of fundamental importance to the body’s ability to prepare itself to perform immediately subsequent power movements. Such preparation is also known as isometric preload.

Examples of use of isometrics
1. When Lucille Ball on I Love Lucy was pregnant for nearly the whole of the 1'52–53 season, the show was not allowed to use the word "pregnant", lest it provoke susceptible viewers to engage in sofa isometrics in the manner of our neighbour Mr Kiessler on St John‘s Road.