Category: Theory
-
What is Isometric?
The term isometric (n) comes from the Greek “ios” which means the same, and “metric” which means distance. i·so·met·ric (s-mtrk) Combined together they make a static contraction where there is no perceivable motion. There are two types of isometric resistance:- Isometric is variable effort against an immovable force Note: Resistance band exercises are not Isometric technically they are Isotonic The…
-
What is Isotonic?
Isotonic (n) literally means equal tension. In exercise science an isotonic contraction is a contraction in which the tension remains constant as the muscle shortens or lengthens. i·so·ton·ic (adj.) (s-tnk) Isotonic is fixed resistance variable speed movement. For example weights in a gym. Although ‘isotonic’ is the term used most frequently to describe fixed resistance variable speed exercise, ‘isoinertial’…
-
Concentric
Concnetric (n) con·cen·tric is a term used to describe a type of movement or exercise. Concentric Definition: The word concentric is most commonly used in sports science and medicine. In these settings concentric defines a type of exercise or movement. Translated literally concentric means towards the centre. This type of contraction occurs when the tension generated within amuscle is sufficient to overcome…
-
Eccentric
Eccentric (n) ec·cen·tric is a term used to describe a type of movement or exercise. Eccentric Definition: The word concentric is most commonly used in sports science and medicine. In these settings eccentric defines a type of exercise or movement. Translated literally eccentric means away from the centre. Whenever a muscle lengthens it generates a contractile force meaning all movements in the body occur…
-
History of Isokinetic (s)
Isokinetic movement has been available since the late 1950’s. First introduced by Hettinger isokinetic movement was is in contrast to the other forms of motion in that it permitted maximum muscle contraction throughout the full range of joint motion. Origionally referred to as ‘accommodating resistance exercise’. This new resistance was variable in proportion to the change in muscular…
-
Why Use Isokinetic (s)?
Isokinetic motion is unique in that the force developed by the subject is equally matched by the machine. Isokinetics has been shown to effective in many situations. Below are specific examples for selected joints: Knee: All the below authors used isokinetic strength as the gold standard measure following arthroscopy. In fact in ACL rehab: Amongst…
-
This is how it all started…
In May 2000 isokinetics.net launched the first isokinetic web pages not made to sell you something. I had already worked with patients on the largest manufacturers machines (Cybex, Biodex and Kin-Com) but found their web sites contained little information on actually using isokinetics machines. Cybex and Biodex did run training courses, and had manuals to…