Isotonic contraction

Definition

Isotonic contraction is a type of muscle action where the muscle changes length while the tension remains constant, commonly occurring during most everyday activities. This process facilitates movement of the body or objects by shortening (concentric contraction) or lengthening (eccentric contraction) of the muscle.

Related terms

Concentric Contraction:

It is when a muscle shortens as it contracts, like lifting a weight upwards.

Eccentric Contraction:

This occurs when a muscle lengthens under tension, such as lowering a weight back down after lifting it.

Muscle Tension: The force generated by the contraction of the muscle, which can vary in response to different types of muscular activity