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 surface | Asymptomatic | 3.76 (0.84) | 6.57 (1.09) |
| Chronic low back pain | 4.21 (1.88) | 7.14 (1.52) | |
| Eyes closed, firm surface | Asymptomatic | 3.93 (1.47) | 7.14 (1.10) |
| Chronic low back pain | 4.23 (1.38) | 7.39 (1.24) | |
| Eyes open, compliant surface | Asymptomatic | 8.29 (1.70) | 10.97 (1.78) |
| Chronic low back pain | 9.10 (2.95) | 12.57 (3.96) | |
| Eyes closed, complaint surface | Asymptomatic | 8.93 (1.45) | 17.15 (4.29) |
| Chronic low back pain | 10.56 (2.85) | 17.98 (4.38) | |
Summary measures represent means (SD).
AP, anteroposterior; CoP, centre of pressure; RMSE, root mean squared error; VEL, velocity.