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. 2021 Sep 10;11(9):1662. doi: 10.3390/diagnostics11091662

Table 3.

Bivariate correlations (Pearson) between muscle tone measurements and other measured variables in axSpA patients.

Cervical Lumbar
Frequency Stiffness Decrement Relaxation Creep Frequency Stiffness Decrement Relaxation Creep
Age 0.459 ** 0.346 * 0.655 ** −0.148 0.003 0.515 ** 0.503 ** 0.257 −0.426 * −0.404 *
Height −0.308 −0.316 −0.179 0.207 0.168 0.104 0.051 0.108 −0.053 −0.024
Weight −0.142 0.022 0.272 0.070 0.136 0.084 0.068 −0.033 0.049 0.074
BMI 0.022 0.228 0.426 * −0.051 0.052 0.040 0.051 −0.092 0.090 0.102
Evolution time −0.080 −0.006 0.120 0.009 0.016 −0.226 −0.192 −0.179 0.227 0.217
Lateral flexion −0.213 −0.148 −0.374 * 0.120 0.062 −0.487 ** −0.506 ** −0.096 0.526 ** 0.460 **
Tragus-wall 0.051 0.057 0.500 ** 0.114 0.244 0.682 ** 0.693 ** −0.029 −0.579 ** −0.574 **
Schöber test −0.023 0.044 −0.467 ** −0.101 −0.173 −0.670 ** −0.697 ** 0.174 0.618 ** 0.608 **
Intermalleolar distance −0.142 −0.050 −0.362 * 0.000 −0.055 −0.146 −0.232 −0.149 0.207 0.179
Cervical rotation −0.047 0.024 −0.562 ** −0.199 −0.324 −0.489 ** −0.493 ** 0.018 0.317 0.303
Chest expansion −0.051 −0.040 −0.550 ** −0.071 −0.153 −0.315 −0.339 −0.004 0.230 0.204
BASMI 0.052 −0.010 0.536 ** 0.138 0.239 0.613 ** 0.646 ** −0.071 −0.559 ** −0.557 **
BASDAI 0.175 0.036 −0.037 0.080 0.121 0.370 * 0.326 0.219 −0.284 −0.286
BASFI 0.042 −0.014 0.294 0.170 0.251 0.508 ** 0.563 ** 0.092 −0.522 ** −0.532 **
Pain 0.138 0.035 −0.016 0.075 0.112 0.425 * 0.381 * 0.294 −0.353 * −0.346 *
mSASSS 0.241 0.183 0.676 ** −0.044 0.082 0.774 ** 0.728 ** −0.327 −0.489 −0.534 *
PCS-12 −0.070 0.126 0.152 −0.158 −0.209 −0.308 −0.208 −0.198 0.285 0.274
MCS-12 −0.164 0.020 0.091 −0.033 −0.098 −0.444 −0.342 −0.138 0.415 0.414

* p < 0.05, ** p < 0.01.