Advanced search
1 file | 282.67 KB

Craniocervical orientation affects muscle activation when exercising the cervical extensors in healthy subjects

Author
Organization
Abstract
Objective: To evaluate the activity of neck extensor muscles during different extension exercises with muscle functional magnetic resonance imaging (mfMRI). Design: Cross-sectional. Setting: University laboratory. Participants: Healthy subjects (N=11; 7 men, mean age +/- SD, 34 +/- 5.6y; 4 women, mean age +/- SD, 23.3 +/- 5.2y; group mean age +/- SD, 30.1 +/- 7.5y). Intervention: Not applicable. Main Outcome Measures: mfMRI measures of T2 relaxation were made for the multifidus (Mul), the semispinalis cervicis (SCe), the semispinalis capitis (SCa), and the splenius capitis (SpC) at C2-3, C5-6, and C7-T1 in response to 2 head/neck orientations: craniocervical neutral (CCN) and craniocervical extension (CCE). Subjects performed three 1-minute repetitions of each condition at 20% maximum voluntary contraction. Results: Significant shifts were observed in all muscle groups at the C5-6 and C7-T1 levels after both conditions (P=.04) except the SpC muscle at C5-6 with CCN (P=.17). T2 shifts in the SCa were significantly greater in response to CCE than CCN at C2-3 (P=.03) and C5-6 (P=.02). Similarly, CCE resulted in larger shifts than CCN in the Mul/SCe at C7-T1 (P=.003). No segmental differences were observed between exercises for SpC (P=.25). Conclusions: The results of this study provide some preliminary insight into the impact of craniocervical orientation on the differential response of the deep and superficial cervical extensor muscles during the performance of cervical extensor exercises.
Keywords
MUSCULOSKELETAL IMPAIRMENT, WORK, FUNCTIONAL MRI, ELECTROMYOGRAPHY, WOMEN, CROSS-SECTIONAL AREA, Exercise, Magnetic resonance imaging, Rehabilitation, CHRONIC NECK PAIN, EMG, RANDOMIZED CONTROLLED-TRIAL, FREQUENT INTERMITTENT HEADACHE

Downloads

    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 282.67 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Elliott, James M, Shaun P O’Leary, Barbara Cagnie, Gail Durbridge, Lieven Danneels, and Gwendolen Jull. 2010. “Craniocervical Orientation Affects Muscle Activation When Exercising the Cervical Extensors in Healthy Subjects.” Archives of Physical Medicine and Rehabilitation 91 (9): 1418–1422.
APA
Elliott, J. M., O’Leary, S. P., Cagnie, B., Durbridge, G., Danneels, L., & Jull, G. (2010). Craniocervical orientation affects muscle activation when exercising the cervical extensors in healthy subjects. ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION, 91(9), 1418–1422.
Vancouver
1.
Elliott JM, O’Leary SP, Cagnie B, Durbridge G, Danneels L, Jull G. Craniocervical orientation affects muscle activation when exercising the cervical extensors in healthy subjects. ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION. 2010;91(9):1418–22.
MLA
Elliott, James M, Shaun P O’Leary, Barbara Cagnie, et al. “Craniocervical Orientation Affects Muscle Activation When Exercising the Cervical Extensors in Healthy Subjects.” ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION 91.9 (2010): 1418–1422. Print.
@article{1075545,
  abstract     = {Objective: To evaluate the activity of neck extensor muscles during different extension exercises with muscle functional magnetic resonance imaging (mfMRI).
Design: Cross-sectional.
Setting: University laboratory.
Participants: Healthy subjects (N=11; 7 men, mean age +/- SD, 34 +/- 5.6y; 4 women, mean age +/- SD, 23.3 +/- 5.2y; group mean age +/- SD, 30.1 +/- 7.5y).
Intervention: Not applicable.
Main Outcome Measures: mfMRI measures of T2 relaxation were made for the multifidus (Mul), the semispinalis cervicis (SCe), the semispinalis capitis (SCa), and the splenius capitis (SpC) at C2-3, C5-6, and C7-T1 in response to 2 head/neck orientations: craniocervical neutral (CCN) and craniocervical extension (CCE). Subjects performed three 1-minute repetitions of each condition at 20\% maximum voluntary contraction.
Results: Significant shifts were observed in all muscle groups at the C5-6 and C7-T1 levels after both conditions (P=.04) except the SpC muscle at C5-6 with CCN (P=.17). T2 shifts in the SCa were significantly greater in response to CCE than CCN at C2-3 (P=.03) and C5-6 (P=.02). Similarly, CCE resulted in larger shifts than CCN in the Mul/SCe at C7-T1 (P=.003). No segmental differences were observed between exercises for SpC (P=.25).
Conclusions: The results of this study provide some preliminary insight into the impact of craniocervical orientation on the differential response of the deep and superficial cervical extensor muscles during the performance of cervical extensor exercises.},
  author       = {Elliott, James M and O'Leary, Shaun P and Cagnie, Barbara and Durbridge, Gail and Danneels, Lieven and Jull, Gwendolen},
  issn         = {0003-9993},
  journal      = {ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION},
  keyword      = {MUSCULOSKELETAL IMPAIRMENT,WORK,FUNCTIONAL MRI,ELECTROMYOGRAPHY,WOMEN,CROSS-SECTIONAL AREA,Exercise,Magnetic resonance imaging,Rehabilitation,CHRONIC NECK PAIN,EMG,RANDOMIZED CONTROLLED-TRIAL,FREQUENT INTERMITTENT HEADACHE},
  language     = {eng},
  number       = {9},
  pages        = {1418--1422},
  title        = {Craniocervical orientation affects muscle activation when exercising the cervical extensors in healthy subjects},
  url          = {http://dx.doi.org/10.1016/j.apmr.2010.05.014},
  volume       = {91},
  year         = {2010},
}

Altmetric
View in Altmetric
Web of Science
Times cited: