Figure 3From: Ultrasound evidence of altered lumbar connective tissue structure in human subjects with chronic low back pain Echogenicity and thickness measurements for combined, subcutaneous and perimuscular zones. Open circles indicate No-LBP group and closed circles indicate LBP group; * p < 0.5, **p < .01, ***p < .001, ANCOVA adjusted for BMI (N = 107).Back to article page