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Correlation between Tone of Suboccipital Muscle and Endurance of Deep Neck Flexor Muscle according to Angle Changes in College Students
J Korean Soc Phys Med 2019;14(2):137-144
Published online May 31, 2019;  https://doi.org/10.13066/kspm.2019.14.2.137
© 2019 Journal of The Korean Society of Physical Medicine.

Hee-ji Lee · Yeon-soo Lee · Ji-young Jeong · Dong-kwon Seo

Department of Physical Therapy, Konyang University, Daejeon, Republic of Korea
Received March 11, 2019; Revised March 19, 2019; Accepted April 5, 2019.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
PURPOSE: The continued use of smartphones has resulted in an abnormal body posture and neck alignment changes. Maintaining this posture for a long time weakens the flexor muscles in the neck and shortens the extensor muscles in the neck. This study examined the correlation between the suboccipital muscle tension and deep neck flexor muscle physical endurance according to the craniovertebral angles.
METHODS: The craniovertebral angle, tension of the suboccipital muscle and endurance of the deep neck flexor muscle were measured in 58 healthy 20-year-old male and female college students. The tension of suboccipital muscle and endurance of the deep neck flexor muscle were then divided according to the body mass index (BMI). Their correlation with the craniovertebral angle was then examined. Each parameter was measured three times to determine the interrater reliability.
RESULTS: The craniovertebral angle and suboccipital muscle tension showed differed significantly. On the other hand, the craniovertebral angle and deep neck flexor muscle physical endurance showed no significant differences.
CONCLUSION: The results show that the craniovertebral angle and deep neck flexor muscle physical endurance were not correlated, but a smaller craniovertebral angle resulted in a higher suboccipital muscle tension.
Keywords : Craniovertebral Angle, Muscle Tonus, Neck Muscle, Physical Endurance


May 2019, 14 (2)
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