Neck Exercises in Patients With Temporomandibular Disorders

The treatment will consist of an 8-week progressive exercise program of neck flexors and extensors exercises supervised by a physical therapist for 30-45 min twice a week per 8 weeks as described in Arm/group descriptions.

The placebo treatment will be for 30-45 min twice a week for 8 weeks, as for the intervention group. ( see details in arm description)