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http://dx.doi.org/10.9708/jksci.2021.26.06.129

Analysis of Correlation Coefficient between head posture and muscle stiffness of cervical extensor muscles  

Kim, Jeong-Ja (Dept. of Physcial Therapy, Howon University)
Wang, Joong-San (Dept. of Physcial Therapy, Howon University)
Publication Information
Journal of the Korea Society of Computer and Information / v.26, no.6, 2021 , pp. 129-135 More about this Journal
Abstract
The purpose of this study was to investigate the relationship of the head posture with the tone and stiffness of the cervical extensor muscles. Eighty adults in their twenties were chosen as subjects, and the tone and stiffness of the cervical extensor muscles were measured, with their usual head posture in the sagittal plane. For the measured head posture, the craniovertebral angle (CVA), craniorotation angle (CRA), and forward shoulder angle (FSA) were analyzed using Image J. It was observed that the tone and stiffness of the upper trapezius muscle increased significantly with a decrease in the CVA as well as with an increase in the CRA (p < 0.05). As a result of further classification into the normal and forward head postures based on the CVA of the subjects, the forward head posture was characterized by a significant increase in the tone and stiffness of the upper trapezius muscle (p<.05). The results of this study are expected to be used as basic data for the evaluation of the forward head posture and posture education in clinical practice.
Keywords
Forward head posture; Craniovertebral angle; Craniorotation angle; Neck extensor muscle; Muscle tone; Muscle Stiffness;
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Times Cited By KSCI : 2  (Citation Analysis)
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