The purpose of this study is to determine whether manipulative osteopathic treatment associated exercises improves pain and function in individuals with chronic non-specific neck pain Design: a randomized single blind placebo controlled trial will be conducted trial. Patients (n=40) with non-specific neck pain will be randomized to receive 1) osteopathic manipulative treatment and exercise (n=20) or 2) exercise alone (n=20). Participants will receive 8 treatments during 4 weeks.