Relationship between Craniovertebral Angle and Function of the Neck Flexor Muscles in Healthy Adults

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  • NAKAMARU Koji
    Department of Rehabilitation, Terashima Orthopedic Clinic Graduate School of Human Health Science, Tokyo Metropolitan University
  • AIZAWA Junya
    Department of Physical Therapy, Ryotokuji University
  • KOYAMA Takayuki
    College of Humanities and Sciences, Nihon University
  • NITTA Osamu
    Graduate School of Human Health Science, Tokyo Metropolitan University

Bibliographic Information

Other Title
  • 健常成人における頭蓋脊椎角と頸部屈筋群機能との関係
  • ケンジョウ セイジン ニ オケル トウガイ セキツイカク ト ケイブ クッキングン キノウ ト ノ カンケイ

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Description

[Purpose] This study examined the relationship between craniovertebral (CV) angle and the activity of the sternocleidomastoid (SCM) during performance of the cranio-cervical flexion test (CCFT) by healthy subjects. [Subjects] Ten volunteer subjects without neck pain enrolled in this study. [Methods] SCM electromyographic (EMG) activity was recorded at five incremental levels of CCFT. Side-view pictures of each subject were taken in the sitting position to assess forward head posture by measurement of the CV angle. [Results] The CV angle was negatively correlated with activity of the SCM muscles at 30 mmHg increments of CCFT (r= -0.75). [Conclusion] Greater activity of SCM was present during the highest stage of the CCFT in subjects with small CV angle. This suggests a small CV angle influences the activity of superficial neck flexors muscles.<br>

Journal

  • Rigakuryoho Kagaku

    Rigakuryoho Kagaku 25 (6), 837-841, 2010

    The Society of Physical Therapy Science

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