Test AxSpA AxSpA Non-back pain Non-back pain
n r, p value n r, p value
Seated cervical rotation (cm) 31 0.649, <0.001 31 0.443, 0.013
Lumbar forward flexion (cm) 31 0.856, <0.001 31 0.858, <0.001
Hip internal rotation (cm) 30 0.854, <0.001 31 0.846, <0.001
Shoulder flexion (degrees)
Right shoulder 30 0.787, <0.001 26 0.468, 0.016
Left shoulder 31 0.906, <0.001 30 0.533, 0.002
Hip abduction (degrees)
Right hip 31 0.583, <0.001 31 0.683, <0.001
Left hip 31 0.643, <0.001 31 0.720, <0.001
Lumbar side flexion (cm)
Right side 31 0.895, <0.001 31 0.476, 0.007
Left side 31 0.842, <0.001 31 0.655, <0.001
Tragus-to-wall (cm) 31 0.872, <0.001 31 0.194, 0.002
Thoracic kyphosis (index) 27 0.705, <0.001 28 0.553, 0.002
Lumbar lordosis (index) 25 -0.272, 0.183 28 0.239, 0.221