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Effect of head and limb orientation on trunk muscle activation during abdominal hollowing in chronic low back pain

Parfrey, Kevin, Gibbons, Sean G.T., Drinkwater, Eric J. and Behm, David G. 2014, Effect of head and limb orientation on trunk muscle activation during abdominal hollowing in chronic low back pain, BMC musculoskeletal disorders, vol. 15, pp. 1-12, doi: 10.1186/1471-2474-15-52.

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Title Effect of head and limb orientation on trunk muscle activation during abdominal hollowing in chronic low back pain
Author(s) Parfrey, Kevin
Gibbons, Sean G.T.
Drinkwater, Eric J.ORCID iD for Drinkwater, Eric J. orcid.org/0000-0002-9594-9360
Behm, David G.
Journal name BMC musculoskeletal disorders
Volume number 15
Article ID 52
Start page 1
End page 12
Total pages 12
Publisher BioMed Central
Place of publication London, Eng.
Publication date 2014-02-22
ISSN 1471-2474
1471-2474
Keyword(s) Adult
Case-Control Studies
Chronic Pain
Disability Evaluation
Electromyography
Exercise Therapy
Female
Head Movements
Humans
Low Back Pain
Male
Middle Aged
Motor Activity
Muscle Contraction
Postural Balance
Posture
Rectus Abdominis
Reflex
Surveys and Questionnaires
Treatment Outcome
Summary BACKGROUND: Individuals with chronic low back pain (CLBP) have altered activations patterns of the anterior trunk musculature when performing the abdominal hollowing manœuvre (attempt to pull umbilicus inward and upward towards the spine). There is a subgroup of individuals with CLBP who have high neurocognitive and sensory motor deficits with associated primitive reflexes (PR). The objective of the study was to determine if orienting the head and extremities to positions, which mimic PR patterns would alter anterior trunk musculature activation during the hollowing manoeuvre. METHODS: This study compared surface electromyography (EMG) of bilateral rectus abdominis (RA), external oblique (EO), and internal obliques (IO) of 11 individuals with CLBP and evident PR to 9 healthy controls during the hollowing manoeuvre in seven positions of the upper quarter. RESULTS: Using magnitude based inferences it was likely (>75%) that controls had a higher ratio of left IO:RA activation with supine (cervical neutral), asymmetrical tonic neck reflex (ATNR) left and right, right cervical rotation and cervical extension positions. A higher ratio of right IO:RA was detected in the cervical neutral and ATNR left position for the control group. The CLBP group were more likely to show higher activation of the left RA in the cervical neutral, ATNR left and right, right cervical rotation and cervical flexion positions as well as in the cervical neutral and cervical flexion position for the right RA. CONCLUSIONS: Individuals with CLBP and PR manifested altered activation patterns during the hollowing maneuver compared to healthy controls and that altering cervical and upper extremity position can diminish the group differences. Altered cervical and limb positions can change the activation levels of the IO and EO in both groups.
Language eng
DOI 10.1186/1471-2474-15-52
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1103 Clinical Sciences
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30082986

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.