Table 2

Anteroposterior centre of pressure parameters for chronic low back pain and asymptomatic participants during different standing conditions

CoPRMSEAP (mm)CoPVELAP (mm/s)
Eyes open, firm surfaceAsymptomatic3.76 (0.84)6.57 (1.09)
Chronic low back pain4.21 (1.88)7.14 (1.52)
Eyes closed, firm surfaceAsymptomatic3.93 (1.47)7.14 (1.10)
Chronic low back pain4.23 (1.38)7.39 (1.24)
Eyes open, compliant surfaceAsymptomatic8.29 (1.70)10.97 (1.78)
Chronic low back pain9.10 (2.95)12.57 (3.96)
Eyes closed, complaint surfaceAsymptomatic8.93 (1.45)17.15 (4.29)
Chronic low back pain10.56 (2.85)17.98 (4.38)
  • Summary measures represent means (SD).

  • AP, anteroposterior; CoP, centre of pressure; RMSE, root mean squared error; VEL, velocity.