Table 3.
Immediate changes in pain sensitivity
| Mechanical Pain Sensitivity PSIS | Mechanical Pain Sensitivity Dorsum of the Foot | Suprathreshold Heat Response | Aftersensation | ||
|---|---|---|---|---|---|
| SMT | Pre | 19.12 (20.96) | 22.14 (20.16) | 36.57 (22.81) | 13.75 (12.46) |
| Post | 18.56 (23.18) | 26.10 (26.77) | 29.54 (23.64)*& | 6.00 (4.57) | |
| Placebo | Pre | 26.48 (30.02) | 23.22 (25.76) | 31.04 (22.01) | 12.67 (9.25) |
| Post | 23.64 (28.93) | 24.16 (27.00) | 34.07 (24.37) | 11.67 (13.69) | |
| Placebo+ | Pre | 18.81 (23.82) | 15.24 (15.28) | 27.00 (22.19) | 6.75 (3.58) |
| Post | 11.78 (16.67) | 20.39 (29.14) | 25.78 (22.78) | 3.63 (2.39) | |
| No Treatment | Pre | 21.68 (26.46) | 29.27 (27.92) | 26.61 (24.92) | 9.62 (11.09) |
| Post | 21.23 (27.20) | 28.19 (26.53) | 29.54 (23.64) | 11.69 (13.79) | |
| Total Sample | Pre | 21.55 (25.39) | 22.60 (23.16) | 30.33 (23.07) | 10.61 (9.85) |
| Post | 18.89 (24.60) | 24.78 (27.12) | 29.45 (22.90) | 8.79 (10.94) | |
All data are reported as mean (standard deviation). Placebo+= placebo SMT provided with instructional set to enhance expectation. Suprathreshold heat response expressed as the rating of the 5th pulse in the suprathreshold heat response protocol using a numeric rating scale with 0= no pain to 100= worst pain imaginable. Aftersensation= pain report through numeric rating scale with 0= no pain to 100= worst pain imaginable provided 15 seconds following the 10th pulse in the suprathreshold heat response protocol. 38/100 (34.5%) of participants reported persistent pain 15 seconds following the 10th pulse in the suprathreshold heat response protocol. Aftersensation information is provided only for the participants who reported persistent pain.
significant between group differences (p≤ 0.05)
significant within group differences (p≤ 0.05).