Skip to main content

Table 2 Changes in pressure pain threshold over time

From: Effect of lumbar spinal manipulation on local and remote pressure pain threshold and pinprick sensitivity in asymptomatic individuals: a randomised trial

  Mean PPT, kg/cm2 (SD) Difference compared to baseline, kg/cm2 (% change) p-value (effect size), compared to baseline
Calf
 Baseline 4.8 (2.1) - -
 Immediate 5.1 (2.2) 0.3 (5.4 %) .11 (.08)
 10 min 5.1 (2.2) 0.4 (7.3 %) .05 (.11)
 20 min 5.2 (2.2) 0.5 (9.6 %) .02* (.17)
 30 min 5.2 (2.0) 0.4 (9.0 %) .03* (.14)
Lumbar spine
 Baseline 6.5 (2.8) - -
 Immediate 6.7 (2.7) 0.2 (3.7 %) .25 (.04)
 10 min 7.0 (2.5) 0.5 (7.2 %) .03* (.13)
 20 min 7.1 (2.7) 0.6 (9.2 %) .01* (.19)
 30 min 7.3 (2.6) 0.8 (11.8 %) .01* (.21)
Scapula
 Baseline 4.6 (1.9) - -
 Immediate 4.6 (2.0) −0.01 (−0.2 %) .88 (.001)
 10 min 4.7 (2.1) 0.1 (2.4 %) .45 (.02)
 20 min 4.7 (1.9) 0.1 (2.6 %) .44 (.02)
 30 min 4.7 (1.7) 0.1 (2.0 %) .58 (.01)
Forehead
 Baseline 2.6 (1.0) - -
 Immediate 2.7 (1.1) 0.1 (2.3 %) .40 (.02)
 10 min 2.7 (1.1) 0.1 (2.3 %) .45 (.02)
 20 min 2.7 (1.0) 0.1 (1.9 %) .58 (.01)
 30 min 2.7 (1.0) 0.1 (3.1 %) .34 (.03)
  1. Abbreviations: PPT pressure pain threshold, SD standard deviation, * = p ≤ .05. Note: effect size reported as partial eta squared (ƞP 2)