Stabilizer Muscles

Definition: The muscles of the body that act to stabilize one joint so a desired movement can be performed in another joint. These muscles usually aren't directly involved in a movement, but work to keep you steady so that the primary muscles can do their job. For example, if you were doing a chest press on an exercise ball, the primary muscles working include the chest and arms, but the abs, back and legs work isometrically to stabilize your body.