Muscle Contractions (Isomertric and Isotonic)
Isotonic Contractions: -Muscles can pull but they cannot push so they must work in pairs to create movement. - An isotonic muscle contraction occurs when a muscle contracts and works over a range of movement. Isotonic Contraction creates movement. It is muscle contraction that results in limb movement Isometric Contractions: - occurs when muscle contracts but stay in a fixed position. eg plank Isometric Contraction results in no movement. It is muscle contraction that results in increased tension but the length does not alter, eg when pressing against a stationary object