An electromyographic analysis of the deep cervical flexor muscles in performance of craniocervical flexion

Falla, D, Jull, G, Dall'Alba, P, Rainoldi, A and Merletti, R (2003) An electromyographic analysis of the deep cervical flexor muscles in performance of craniocervical flexion. Physical Therapy, 83 10: 899-906.

Author Falla, D
Jull, G
Dall'Alba, P
Rainoldi, A
Merletti, R
Title An electromyographic analysis of the deep cervical flexor muscles in performance of craniocervical flexion
Journal name Physical Therapy   Check publisher's open access policy
ISSN 0031-9023
1538-6724
Publication date 2003-01-01
Year available 2003
Sub-type Article (original research)
Open Access Status Not yet assessed
Volume 83
Issue 10
Start page 899
End page 906
Total pages 8
Editor Dr. Jules Rothstein
Jan P Reynolds
Place of publication USA
Publisher American Physical Therapy Association
Language eng
Subject C1
321024 Rehabilitation and Therapy - Occupational and Physical
730303 Occupational, speech and physiotherapy
Abstract Background and Purpose. This study evaluated an electromyographic technique for the measurement of muscle activity of the deep cervical flexor (DCF) muscles. Electromyographic signals were detected from the DCF, sternocleidomastoid (SCM), and anterior scalene (AS) muscles during performance of the craniocervical flexion (CCF) test, which involves performing 5 stages of increasing craniocervical flexion range of motion-the anatomical action of the DCF muscles. Subjects. Ten volunteers without known pathology or impairment participated in this study. Methods. Root-mean-square (RMS) values were calculated for the DCF, SCM, and AS muscles during performance of the CCF test. Myoelectric signals were recorded from the DCF muscles using bipolar electrodes placed over the posterior oropharyngeal wall. Reliability estimates of normalized RMS values were obtained by evaluating intraclass correlation coefficients and the normalized standard error of the mean (SEM). Results. A linear relationship was evident between the amplitude of DCF muscle activity and the incremental stages of the CCF test (F=239.04, df=36, P<.0001). Normalized SEMs in the range 6.7% to 10.3% were obtained for the normalized RMS values for the DCF muscles, providing evidence of reliability for these variables. Discussion and Conclusion. This approach for obtaining a direct measure of the DCF muscles, which differs from those previously used, may be useful for the examination of these muscles in future electromyographic applications.
Keyword Orthopedics
Rehabilitation
Cervical Spine
Electromyography
Longus Capitis Muscle
Longus Colli Muscle
Neck Pain
Surface Emg Variables
Scalene Muscles
Longus-colli
Neck Muscles
Repeatability
Dysfunction
Headache
Q-Index Code C1
Institutional Status UQ

 
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Created: Wed, 15 Aug 2007, 05:18:28 EST