Index to Chiropractic Literature
Index to Chiropractic Literature
My ICL     Sign In
Thursday, June 27, 2019
Index to Chiropractic LiteratureIndex to Chiropractic LiteratureIndex to Chiropractic Literature
Share:

ICL Home


For best results switch to Advanced Search.
Article Detail
Return to Search Results
ID 25090
Title The effects of forward head posture on neck extensor muscle thickness: An ultrasonographic study
URL https://www.ncbi.nlm.nih.gov/pubmed/29248172
Journal J Manipulative Physiol Ther. 2018 Jan;41(1):34-41
Author(s)
Subject(s)
Peer Review Yes
Publication Type Article
Abstract/Notes

Objective: This study aimed to compare neck extensor muscle thickness, thickness changes, and strength between participants with forward head posture (FHP) and controls with normal head posture (NHP).

Methods: Twenty college students with FHP (mean age 21.30 ± 2.36 years) and 20 students with NHP (mean age 21.85 ± 2.78 years) participated in this case-control study. The thickness of neck extensor muscles was measured at rest and at maximal voluntary isometric contraction (MVIC). In addition, the craniovertebral angle (CVA) was calculated. To compare thickness changes between the 2 groups and among 5 muscles, a 2-way repeated measures analysis of variance was applied. In addition, Pearson’s correlation test was performed to investigate the relationship between neck extensor MVIC and CVA.

Results: The FHP group demonstrated lower MVIC compared with the NHP group (P = .03). Semispinalis capitis showed the smallest thickness changes during neck extensor MVIC in FHP compared with the controls (P < .001). However, no significant difference in terms of muscle thickness was observed between the 2 groups at the state of rest (P = .16-.99). A positive association was also found between the MVIC and CVA (P = .02).

Conclusions: Semispinalis capitis had less thickness changes during MVIC of neck extensors in individuals with FHP compared with those with NHP. This indirectly implies lower activity of this muscle in FHP condition. This study finding may help researchers develop therapeutic exercise protocols to manage FHP.

Author keywords: Muscle Contraction; Muscle Strength; Neck Muscles; Posture; Ultrasonography

Author affiliations: GF, LR, NK, RB: University of Social Welfare and Rehabilitation Sciences. Department of Physiotherapy (Iran / Tehran); SJ: Monash University. Faculty of Medicine, Nursing and Health Sciences. School of Primary Health Care. Department of Physiotherapy (Australia / Frankston)

This abstract is reproduced with the permission of the publisher. Free full text is temporarily provided by the publisher.


 

      Text (Citation) Tagged (Export) Excel
 
Email To
Subject
 Message
Format
HTML Text     Excel



Search Tips
  • Enclose phrases in "quotation marks".  Examples: "low back pain", "evidence-based"
  • Retrieve all forms of a word with an asterisk*, also called a wildcard or truncation.  Example: chiropract* retrieves chiropractic, chiropractor, chiropractors
  • Register an account in My ICL to save search histories (My Searches) and collections of records (My Collections)
Advanced Search Tips