||This article is a stub. You can help Athlepedia by expanding it.
Defined as muscular contraction that overcomes resistance, resulting in a change in the length of the muscle.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.