Efficacy of Cervical Stabilization Exercises on Hand Grip Strength in Chronic Myofascial Neck Pain

Myofascial pain of the trapezius is considered one of the main causes of neck pain and characterized by deep, intense pain of the skeletal muscles and their fascia and by the presence of one or more MTrPs, Although MTrPs can be formed in any muscle or muscle group, previous studies concluded that the upper trapezius(UT) muscle is the most commonly affected muscle. Considering the role of synergistic function of the UT muscle in scapula-humeral rhythm during shoulder movement, it is not surprising that MTrPs in UT muscle can result in shoulder dysfunction and disability. Muscle activity of proximal parts is necessary for activation of distal parts. In fact, the stable activity of distal parts needs controlling the proximal parts. Thus, the stability of shoulder girdle is required for activity of distal parts such as fingers, wrists and elbows. In addition, trigger points in the UT can affect grip strength, which depends on shoulder joint and scapular stability. Thus, UT muscle dysfunction can reduce grip strength. However, little research has been carried out to determine the therapeutic effects of cervical stabilization exercises on chronic neck pain, and up till now, there is a gap in literature to explore efficacy of cervical stabilization exercises on chronic neck pain and hand grip strength. Therefore, this study aims to investigate whether cervical stabilization exercises has an effect on hand grip strength in chronic myofascial neck pain.