Fig. 1From: Effect of spinal manipulative treatment on cardiovascular autonomic control in patients with acute low back painSchematic drawing of the experimental design. NPS refers to the numeric pain scale. D(−2) refers to 2 days before the day of the first treatment (D1), D1PRE to just before the first treatment, D1POST to immediately after the first treatment, D (5) to 5 days after the first treatment, D7PRE to just before the second treatment, and D7POST to immediately after the second treatmentBack to article page