1. Volume 12, Issue 4, Pages 267-273 (December 2005)
Back extensor muscle oxygenation and fatigability in healthy subjects and low back pain patients during dynamic back extension exertion 
Markku Kankaanpää, Willy N. Colier, Simo Taimela, Christoph Anders, Olavi Airaksinen, Satu-Mari Kokko-Aro, Osmo Hänninen 
Pathophysiology 
Volume 12, Issue 4, Pages (December 2005)
DOI: /j.pathophys
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2. Fig. 1
(a) The DBC110 back extension exercise unit where the 90s repetitive back extensions were performed up to 90s with the load that was calculated on the basis of upper body mass. (b) The bipolar EMG electrodes and NIRS optodes were placed on the L4–L5 spinal level. The optode locations are indicated with ×. The EMG electrodes were placed bilaterally and NIRS optodes on the right side over the paraspinal muscles.
Pathophysiology  , DOI: ( /j.pathophys )
Copyright © 2005 Elsevier Ireland Ltd Terms and Conditions

3. Fig. 2
The relationship between the paraspinal muscle oxygenation during the endurance test and subcutaneous tissue thickness are better described by quadratic (R2=0.542) than linear (R2=0.360) fitting. The detection depth of the NIRS seems to be limited to about 9mm in this experimental set up.
Pathophysiology  , DOI: ( /j.pathophys )
Copyright © 2005 Elsevier Ireland Ltd Terms and Conditions