The main objective of this review is to assess the effect of biofeedback on neck pain. Specifically, this review will estimate the mean effect of biofeedback and heterogeneity in the following comparisons at short-term (i.e., the period at or closest to four to six weeks) and intermediate-term (i.e., the period at or closest to eight to 12 weeks) measurement periods:

• EMG biofeedback versus no treatment/placebo for individuals with short-duration neck pain.
• EMG biofeedback versus alternative treatment for individuals with short-duration neck pain.
• EMG biofeedback versus no treatment/placebo for individuals with long-duration neck pain.
• EMG biofeedback versus alternative treatment for individuals with long-duration neck pain.
• Pressure biofeedback versus no treatment/placebo for individuals with short-duration neck pain.
• Pressure biofeedback versus alternative treatment for individuals with short-duration neck pain.
• Pressure biofeedback versus no treatment/placebo for individuals with long-duration neck pain.
• Pressure biofeedback versus alternative treatment for individuals with long-duration neck pain.