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Research Journal of Pharmacy and Technology
Year : 2018, Volume : 11, Issue : 7
First page : ( 2997) Last page : ( 3002)
Print ISSN : 0974-3618. Online ISSN : 0974-360X.
Article DOI : 10.5958/0974-360X.2018.00552.8

Comparison of the thickness of Longus colli and Sternocleidomastoid according to weight of backpack and measurement of craniocervical angle

Lee Kwan-Young, Noh Hyo-Rae, Jang Seong-Jin, Lee Dong-Yeop, Hong Ji-Heon, Yu Jae-Ho, Kim Jin-Seop*

Dept. of Physical Therapy, Sun Moon University, Republic of Korea

*Corresponding Author E-mail: skylove3373@sunmoon.ac.kr

Online published on 31 October, 2018.



The purpose of the study is to compare and measure the longus colli and SCM, and craniovertebral angle when you carriage a backpack in standing position.

Methods/Statistical analysis

After preliminary research was performed, with five healthy female and 25 healthy male, total 30 people who were matched agreed to participate in this study. The weight of the backpack was set to 0%, 5%, 10%, 15%, and longus colli and SCM were measured with the ultrasound imaging equipment. The Craniovertebral angle was measured using an electronic goniometer. All measurements of the experiments were performed with the oneway repeated ANOVA.


The 30 subjects were applied weights of 5%, 10% and 15% in standing posture carrying backpacks. The thicknesses of longus colli muscle and sternocleidomastoid muscle according to the weights of the backpack showed no statistically significant differences. And The craniovertebral angle according to the weight of the backpack showed significant differences (p<0.05). Especially, in 15% of the weight of the backpack, significant differences were shown at 0%, 5% and 10%


By participating in this study, subjects can prevent future forward head posture effectively by knowing how to change their craniovertebral angle while carrying a backpack.



Forward head posture, Craniovertebral angle, Logus colli muscle, Sternocleidomastoid, Backpack.


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