Comparison of McKenzie and Isometric Exercises on Neck Functions of Computer Users with Forward Head Posture

Abstract

Introduction: Prolonged use of computer can lead to poor posture such as forward head posture (FHP). This posture is associated with imbalance and stiffness of the neck muscles, lack of postural awareness and inappropriate ergonomics, resulting in work-related musculoskeletal disorders. These disturbances can affect the performance and productivity of office workers. Postural awareness training, neck exercises, and modalities are interventions in FHP management. Research that compares the effectiveness of cervical McKenzie and isometric exercise on neck functional score in computer users with forward head posture has not been conducted.
 Methods: This research was a quasi-experimental. The participants, 24 computer users working at Kariadi Hospital, Semarang, were divided into 2 groups by purposive sampling receiving cervical McKenzie exercise (n=12) and cervical isometric exercise (n=12). Each group received different exercise. Neck functional score was assessed by Neck Disability Index (NDI) questionnaire before and after intervention. The mean differences before and after treatment, as well as between groups was compared statistically using paired t-test.
 Results: The mean NDI score in the McKenzie group after treatment showed an improvement of 7.84 ± 3.54 with p = 0.002. The mean NDI score in the isometric group after treatment also showed an improvement of 3.93 ± 3.75 with p = 0.004. The difference in NDI score improvement in the cervical McKenzie group was greater than the one in isometric group and statistically significant with p = 0.017.
 Conclusion: Cervical McKenzie exercise was proved to be more effective in improving neck functional scores in patients with FHP compared to cervical isometric exercise.