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KMID : 0361420120360010098
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Journal of Korean Academy of Rehabilitation Medicine
2012 Volume.36 No. 1 p.98 ~ p.104
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The Effect of The Forward Head Posture on Postural Balance in Long Time Computer Based Worker
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Kang Jung-Ho
Park Rae-Young
Lee Su-Jin
Kim Ja-Young
Yoon Seo-Ra
Jung Kwang-Ik
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Abstract
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Objective: To estimate the effects of a relatively protruded head and neck posture on postural balance, in computer based worker.
Method: Th irty participants, who work with computers for over 6 hrs per day (Group I), and thirty participants, who rarely work with computers (Group II), were enrolled. Th e head and neck posture was measured by estimating angles A and B. A being the angle between the tragus of the ear, the lateral canthus of the eye, and horizontal line and B the angle between the C7 spinous process, the tragus of the ear, and the horizontal line. Th e severity of head protrusion with neck extension was assessed by the subtraction of angle A from angle B. We also measured the center of gravity (COG) and postural balance by using computerized dynamic posturography to determine the eff ect of computer-based work on postural balance.
Results: Results indicated that group I had a relatively more protruded head with extensive neck posture (angle B-A of group I and group II, 28.2±8.3, 32.9±6.0; p<.05). Th e COG of group I tended more toward the anterior than that of group II. Postural imbalance and impaired ability to regulate movement in forward and backward direction were also found.
Conclusion: The results of this study suggest that forward head postures during computer-based work may contribute to some disturbance in the balance of healthy adults. These results could be applied to education programs regarding correct postures when working at a computer for extended periods of time.
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KEYWORD
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Turtle neck, Center of gravity, Postural balance
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