1. Fatigue of abdominal and paraspinal muscles during sustained loading of the trunk in the coronal plane 
Kelly Thomas, BAppSc, Raymond Y.W. Lee, PhD 
Archives of Physical Medicine and Rehabilitation 
Volume 81, Issue 7, Pages (July 2000)
DOI: /apmr
Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

2. Fig. 1
The experimental set up. Subject stood upright inside a restraint frame while a lateral bend load was applied.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /apmr )
Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

3. Fig. 2
The mean median frequency of the power spectrum of the EMG signals of the trunk muscles for (A) 20%, (B) 40%, and (C) 60% of maximal lateral bend exertion. LES, lumbar erector spinae; TES, thoracic erector spinae; RA, rectus abdominus; EO, external abdominal oblique; IO, internal abdominal oblique.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /apmr )
Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions

4. Fig. 3
The total power of the EMG signals of the trunk muscles for (A) 20%, (B) 40%, and (C) 60% of maximal lateral bend exertion. LES, lumbar erector spinae; TES, thoracic erector spinae; RA, rectus abdominus; EO, external abdominal oblique; IO, internal abdominal oblique.
Archives of Physical Medicine and Rehabilitation  , DOI: ( /apmr )
Copyright © 2000 American Congress of Rehabilitation Medicine and the American Academy of Physical Medicine and Rehabilitation Terms and Conditions