Analysis of Head Posture and Activation of the Cervical Neck Extensors During a Low-Load Task in Women With Chronic Migraine and Healthy Participants.

An extended (forward) head posture was moderately correlated with an increased in electrical activity of superficial neck extensor muscles, particularly the upper trapezius, when acting as an antagonist, during the performance of the CCFT in women with chronic but not episodic migraine.