1. Is There Altered Activity of the Extensor Muscles in Chronic Mechanical Neck Pain? A Functional Magnetic Resonance Imaging Study 
Shaun O'Leary, PT, PhD, Barbara Cagnie, PT, PhD, Ashton Reeve, BSc, Gwendolen Jull, PT, PhD, James M. Elliott, PT, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 92, Issue 6, Pages (June 2011)
DOI: /j.apmr
Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

2. Fig 1
Dynamometry method used to perform the (A) cervical extension in CCN, and (B) cervical extension in CCE exercises.
Reprinted from Elliott et al.19
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions

3. Fig 2
Group mean T2 shift values (ms) (95% confidence interval error bars) after the (A) cervical extension in cranio-cervical neutral exercise, and (B) cervical extension in cranio-cervical extension exercise, conditions for all muscles (Mul/SCe, SpC, SCa), and levels in the control and mechanical neck pain group. *Significant group differences (P<.05) for the specific exercise condition.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /j.apmr )
Copyright © 2011 American Congress of Rehabilitation Medicine Terms and Conditions