Fig. 14

Human model of DOMS in the thoracolumbar paraspinal muscles. a Distribution of pressure pain thresholds. In the CTR group (n = 12), there were no remarkable changes in the pressure pain threshold maps at 0 (before LC), 24, and 48 h after LC. In the LC group (n = 12), the pressure pain thresholds remarkably decreased 24 h after LC, and the decreased threshold appeared to recover 48 h after LC. Heatmap images were obtained from the mean pressure pain threshold values at each measurement point (ranging from 294 to 588 kPa). b: Magnitude of DOMS in the thoracolumbar area after LC. Note the significantly higher magnitude of DOMS in the LC group than in the CTR group at segments Th11–L5 (*p < 0.05, **p < 0.01, ***p < 0.001, and ****p < 0.0001; CTR vs. LC, two-way repeated-measures analysis of variance followed by Sidak’s multiple comparison test).