Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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The Effect of Gaze Directions and Pressure Levels on longus colli and Sternocleidomastoid Thickness during Cranio-cervical flexor Exercise in Young Adults

젊은 성인에서 머리-목 굽힘근 운동 시 시선과 압력이 목긴근과 목빗근의 근두께에 미치는 영향

  • Cha, Ha-ri (Department of Physical Therapy, Konyang University) ;
  • Lee, Byoung-Kwon (Department of Physical Therapy, Konyang University) ;
  • Seo, Dong-Kwon (Department of Physical Therapy, Konyang University)
  • 차하리 (건양대학교 물리치료학과) ;
  • 이병권 (건양대학교 물리치료학과) ;
  • 서동권 (건양대학교 물리치료학과)
  • Received : 2020.09.28
  • Accepted : 2021.02.05
  • Published : 2021.02.28
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Abstract

This study aimed to investigate the effect of changes in pressure levels and gaze directions on deep neck flexor muscle thickness. Twenty-seven subjects participated in this study. Ultrasound imaging of the longus colli (LC) and sternocleidomastoid (SCM) were measured in four gaze directions (0°, 20°, 40°, 60°) and five pressure levels (20 mmHg, 22 mmHg, 24 mmHg, 26 mmHg, 28 mmHg) during cranial-cervical flexor (CCF) exercises. Repeated ANOVA was performed for analysis of muscle thickness difference according to gaze direction and pressure levels in LC and SCM. Results: LC showed a significant difference between 0° and 20°, 0° and 40°, and 0° and 60° at pressures of 20 mmHg and 22 mmHg (p<.05). SCM displayed a significant difference between 0° and 20°, 20° and 40°, and 40° and 60° at 28 mmHg (p<.05). In this study, it was found that setting the gaze direction to 20° for the CCF exercise can increase the activation of LC and lower the activity of SCM to obtain the effect of exercise. Based on the results of this study, it is hoped that the beneficial effects of the CCF exercise can be increased by setting an optimal gaze direction in a clinical environment.

이 연구는 정상 성인에서 머리-목 굽힘 운동 시 시선의 각도와 압력이 깊은목굽힘근의 두께변화에 미치는 영향을 알아보고자 하였다. 본 연구에는 27명이 참여하였다. 머리-목굽힘 운동하는 동안 4가지(0°, 20°, 40°, 60°)의 시선과 5가지(20mmHg, 22mmHg, 24mmHg, 26mmHg, 28mmHg)의 압력에서 목긴근과 목빗근의 근 두께는 초음파 영상을 이용해 측정하였다. 시선 각도 및 압력변화에 따른 목긴근과 목빗근의 두께 변화를 비교 분석하기 위하여 반복측정분산분석을 수행하였다. 본 연구결과, 목긴근은 20과 22mmHg에서 0°와 20°, 0°와 40°, 0°와 60°은 유의한 차이를 보였으며, 20°에서 가장 근활성도가 높았다(p<.05). 목빗근은 28mmHg에서 0°와 20°, 20°와 40°, 40°와 60°은 유의한 차이를 보였으며, 20°에서 가장 낮은 근활성도를 보였다(p<.05). 본 연구에서 머리-목 굽힘 운동 시에는 시선의 방향을 20°로 설정하는 것이 목긴근의 활성화를 높이고, 목빗근의 근활성도를 낮추어 운동의 효과를 얻을 수 있다는 것을 찾았다. 본 연구의 결과를 바탕으로 임상환경에서 머리-목 굽힘 운동시에 시선 방향을 설정하여 운동의 효과를 증대시키길 바란다.

Keywords

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