DEFINE – What does Extend mean?
Extend, or extension, refers to the straightening of a joint or making a joint’s angle wider.
BREAKING DOWN – Extend
Extension movements are found in joints throughout the human body. The knee extends when you straighten it. Your hip extends when you bring your leg up and back, behind you. Your arm extends when you send it back behind the body. Your elbow extends also when you straighten it.
This movements allows you to reach for objects. It further allows movement patterns, such as walking, running, and more.