Test
AxSpA group [mean (SD)] Non-back pain group [mean (SD)]
p value
Seated cervical rotation (cm) 5.7 (1.4) 6.3 (0.8) 0.06
Lumbar forward flexion (cm) 33.5 (1.4) 18.7 (9.4) <0.001
Hip internal rotation (cm) 36.4 (12.3) 47.4 (7.6) <0.001
Shoulder flexion (degrees)
Right shoulder 140.5 (21.6) 164.9 (18.7) <0.001
Left shoulder 140.5 (26.3) 166.9 (18.8) <0.001
Hip abduction (degrees)
Right hip 30.6 (10.2) 44.0 (9.9) <0.001
Left hip 29.8 (10.1) 44.6 (8.3) <0.001
Lumbar side flexion (cm)
Right side 12.9 (4.6) 20.3 (4.5) <0.001
Left side 12.4 (4.9) 19.5 (3.1) <0.001
Tragus-to-wall (cm) 16.7 (4.0) 13.2 (1.5) <0.001
Thoracic kyphosis (index) 11.8 (3.9) 9.1 (3.6) 0.008
Lumbar lordosis (index) 10.4 (3.2) 12.27 (4.4) 0.08