Table 2. Intraclass correlation coefficients (ICC), standard error of measurement (SEM) and minimum detectable change (MDC) for pressure pain thresholds assessed during session 1 over 14 locations (P1 to P14) over the low back region, for left and right locations (Pleft and Pright) as well as overall low back (Pall) between the mean of the first and second trials (T1-T2), the first and the third trials (T1-T3), the second and the third trials (T2-T3) and the means of the three trials (T1-T2-T3).
| Trials | T1-T2 | T1-T3 | T2-T3 | T1-T2-T3 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ICC | SEM | MDC | MDC | ICC | SEM | MDC | MDC | ICC | SEM | MDC | MDC | ICC | SEM | MDC | MDC | |
| Points | (95%CI) | (kPa) | (kPa) | (%) | (95%CI) | (kPa) | (kPa) | (%) | (95%CI) | (kPa) | (kPa) | (%) | (95%CI) | (kPa) | (kPa) | (%) |
| P1 | 0.92 (0.72 - 0.97) | 64 | 179 | 35 | 0.88 (0.67 - 0.96) | 77 | 215 | 42 | 0.96 (0.88 - 0.99) | 44 | 122 | 25 | 0.92 (0.81 - 0.97) | 63 | 175 | 35 |
| P2 | 0.85 (0.61 - 0.95) | 85 | 234 | 46 | 0.90 (0.74 - 0.97) | 60 | 167 | 33 | 0.93 (0.81 - 0.98) | 59 | 164 | 32 | 0.90 (0.77 - 0.96) | 68 | 190 | 37 |
| P3 | 0.92 (0.78 - 0.97) | 72 | 200 | 33 | 0.91 (0.76 - 0.97) | 71 | 197 | 31 | 0.89 (0.71 - 0.96) | 85 | 235 | 37 | 0.91 (0.80 - 0.96) | 76 | 210 | 34 |
| P4 | 0.94 (0.84 - 0.98) | 50 | 138 | 21 | 0.86 (0.62 - 0.95) | 76 | 212 | 33 | 0.91 (0.74 - 0.97) | 67 | 185 | 29 | 0.90 (0.79 - 0.96) | 65 | 180 | 28 |
| P5 | 0.94 (0.78 - 0.98) | 57 | 159 | 25 | 0.91 (0.75 - 0.97) | 68 | 190 | 30 | 0.95 (0.86 - 0.98) | 52 | 144 | 22 | 0.93 (0.85 - 0.97) | 59 | 164 | 26 |
| P6 | 0.88 (0.69 - 0.96) | 83 | 229 | 37 | 0.88 (0.59 - 0.96) | 84 | 232 | 37 | 0.94 (0.83 - 0.98) | 60 | 166 | 26 | 0.90 (0.78 - 0.96) | 76 | 210 | 34 |
| P7 | 0.94 (0.84 - 0.98) | 57 | 159 | 29 | 0.90 (0.71 - 0.97) | 77 | 213 | 38 | 0.94 (0.83 - 0.98) | 60 | 167 | 29 | 0.93 (0.84 - 0.97) | 65 | 180 | 32 |
| P8 | 0.91 (0.75 - 0.97) | 81 | 224 | 41 | 0.91 (0.75 - 0.97) | 74 | 204 | 37 | 0.93 (0.81 - 0.98) | 65 | 180 | 32 | 0.91 (0.82 - 0.97) | 73 | 202 | 36 |
| P9 | 0.95 (0.87 - 0.98) | 51 | 142 | 23 | 0.86 (0.65 - 0.95) | 86 | 237 | 37 | 0.93 (0.81 - 0.98) | 64 | 176 | 28 | 0.92 (0.82 - 0.97) | 68 | 188 | 30 |
| P10 | 0.95 (0.81 - 0.99) | 51 | 141 | 24 | 0.96 (0.80 - 0.99) | 46 | 127 | 22 | 0.97 (0.91 - 0.99) | 40 | 111 | 18 | 0.96 (0.90 - 0.99) | 46 | 126 | 21 |
| P11 | 0.97 (0.91 - 0.99) | 40 | 112 | 17 | 0.94 (0.83 - 0.98) | 60 | 165 | 26 | 0.93 (0.81 - 0.98) | 61 | 170 | 26 | 0.95 (0.88 - 0.98) | 54 | 150 | 23 |
| P12 | 0.95 (0.84 - 0.98) | 61 | 168 | 26 | 0.98 (0.94 - 0.99) | 34 | 94 | 15 | 0.94 (0.81 - 0.98) | 62 | 172 | 27 | 0.95 (0.89 - 0.98) | 53 | 148 | 24 |
| P13 | 0.93 (0.78 - 0.97) | 63 | 174 | 28 | 0.88 (0.68 - 0.96) | 79 | 218 | 35 | 0.95 (0.87 - 0.98) | 45 | 126 | 20 | 0.92 (0.82 - 0.97) | 63 | 176 | 28 |
| P14 | 0.87 (0.66 - 0.95) | 91 | 253 | 42 | 0.89 (0.71 - 0.96) | 78 | 217 | 37 | 0.94 (0.84 - 0.98) | 57 | 158 | 27 | 0.90 (0.78 - 0.96) | 76 | 212 | 36 |
| Pleft | 0.97 (0.91 - 0.99) | 41 | 115 | 20 | 0.96 (0.90 - 0.99) | 43 | 118 | 20 | 0.99 (0.96 - 1.00) | 26 | 72 | 12 | 0.97 (0.94 - 0.99) | 37 | 103 | 18 |
| Pright | 0.98 (0.95 - 1.00) | 27 | 75 | 12 | 0.95 (0.86 - 0.98) | 46 | 128 | 21 | 0.97 (0.93 - 0.99) | 35 | 98 | 16 | 0.97 (0.93 - 0.99) | 37 | 102 | 17 |
| Pall | 0.98 (0.94 - 0.99) | 32 | 88 | 15 | 0.96 (0.88 - 0.99) | 44 | 122 | 20 | 0.99 (0.96 - 1.00) | 27 | 74 | 12 | 0.97 (0.94 - 0.99) | 35 | 96 | 16 |