Extension
Updated May 01, 2014.
Definition: Extension refers to a movement at a joint in the body in which the bones on either side move further apart, thus increasing the joint angle. An example of this would be straightening the elbow during the lowering phase of a biceps curl.
Definition: Extension refers to a movement at a joint in the body in which the bones on either side move further apart, thus increasing the joint angle. An example of this would be straightening the elbow during the lowering phase of a biceps curl.
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