Figure 1

Mean interstitial concentrations of glutamate (panel a), interleukin 6 (IL-6; panel b), lactate dehydrogenase (LDH; panel c), and bradykinin (BKN; panel d) throughout the microdialysis experiment in women with trapezius myalgia (TM) and in healthy controls (CON). X-axis gives min after insertion of the catheters and samples are plotted at midpoint of the sampling period. PEG = repetitive low-force exercise performed unilaterally on a pegboard during 40 min (160–200 min after catheter insertions), STR = STROOP test during 10 min (320–330 min after catheter insertions). TM is denoted by filled blue squares and CON is denoted with unfilled red squares.