Abstract
Objective: To evaluate the efficacy of strengthening exercise of deep neck flexors in patients with chronic neck pain. Design: Case series. Setting: Rehabilitation outpatient clinic. Participants: 19 patients (age range, 21−61y) with chronic neck pain lasting more than 3 months. Interventions: The strengthening exercise of deep neck flexors was performed 3 sessions a week for 12 weeks. Main Outcome Measures: The visual analog scale (VAS) of pain, Neck Disability Index (NDI), maximum voluntary contractile strength of neck deep flexors, maximum voluntary contractile strength holding time, and submaximal strength holding time. Results: There were significant decreases in VAS, NDI, maximum voluntary contractile strength holding time, and submaximal strength holding time at 6 (P<.05) and 12 weeks (P<.05). And effect of exercise was more favorable at 12 weeks. Conclusions: The strengthening exercise program of the deep neck flexors resulted in reduced neck pain and a decrease in disability of the neck, as well as improved static strength and static endurance of the deep neck flexors.
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