Table 2.
Statistics for posturography measures obtained under different conditions of postural difficulty for the ACL injury group and the control group.
| Test | Control (median) | ACL injury (median) | p | Effect size (Cohen’s D) |
|---|---|---|---|---|
| Eyes open | ||||
| Mediolateral displacement (cm) | 0.30 | 0.11 | 0.89 | 0.50 |
| Anteroposterior displacement (cm) | 2.98 | 2.46 | 0.64 | 0.86 |
| Velocity of displacement (cm/s) | 3.40 | 3.92 | 0.20 | 1.24 |
| Area of displacement (cm2) | 7.24 | 6.81 | 0.23 | 0.30 |
| Eyes closed | ||||
| Mediolateral displacement (cm) | 3.07 | 0.04 | 0.04* | 0 |
| Anteroposterior displacement (cm) | 0.42 | 1.29 | 0.19 | 0.10 |
| Velocity of displacement (cm/s) | 8.40 | 7.73 | 0.88 | 0 |
| Area of displacement (cm2) | 18.77 | 20.83 | 0.38 | 0 |
| Flexion/extension (squat) | ||||
| Mediolateral displacement (cm) | 0.44 | 0.26 | 0.01* | 0.81 |
| Anteroposterior displacement (cm) | 1,27 | 0.73 | 0.63 | 0.89 |
| Velocity of displacement (cm/s) | 9.45 | 9.27 | 1.00 | 0.32 |
| Area of displacement (cm2) | 21.79 | 24.52 | 0.53 | 6.99 |
| Kick | ||||
| Mediolateral displacement (cm) | 0.11 | 0.67 | 0.45 | 1.85 |
| Anteroposterior displacement (cm) | 1.01 | 1.16 | 0.87 | 0.23 |
| Velocity of displacement (cm/s) | 10.31 | 11.20 | 0.76 | 1.33 |
| Area of displacement (cm2) | 32.54 | 33.58 | 0.66 | 0.31 |