Table 1. Mean (± standard deviation) of Center of Pressure (CoP) measures for individuals with ACL reconstruction (ACLr) and typical individuals (Controls) during normal quite stance and one leg stance (OLS). For each group comparison, the F-ratio resulting from the analysis of variance and the relevant p value are presented.
|
ACL reconstruction |
Controls |
F-ratio, p value |
| One leg Stance |
| Operated (Right) |
Non-operated (left) |
Right |
Left |
|
| CoPsd M/L (mm) |
.60 (.33) |
.51 (.20) |
.34 (.16) * |
.36 (.12) |
7.64, p = .010 |
| CoPsd A/P (mm) |
.83 (.41) |
.68 (.28) |
.44 (.24) * |
.47 (.23) * |
7.69, p = .007 |
| Total CoP path (mm) |
384.5 (186.4) |
304.9 (99.1) # |
316.5 (89.0) * |
324.4 (84.1) |
12.32, p = 0.01 |
| CoP Speed (mm/s) |
20.37 (14.34) |
17.21 (6.41) |
12.21 (4.90) * |
12.42 (5.45) * |
4.87, p = .034 |
| Sway area (mm2) |
44173 (18101) |
41100 (9681) |
34104 (17232) * |
34184 (15684) * |
5.35, p = .031 |
|
Normal Quite Stance |
| CoPsd M/L (mm) |
1.58 (.11) * |
.72 (.51) |
6.96, p = .013 |
| CoPsd A/P (mm) |
2.30 (1.31) * |
.67 (.26) |
12.32, p = .01 |
| Total CoP path (mm) |
61.8 (43.0) * |
29.1 (10.9) |
8.69, p = .006 |
| CoP Speed (mm/s) |
2.33 (1.47) * |
1.07 (.47) |
9.41, p = .005 |
| Sway area (mm2) |
6526 (4392) * |
3185 (1412) |
8.35, p = .007 |
CoPsd M/L : standard deviation of the CoP in the mediolateral axis; CoPsd A/P : standard deviation of the CoP in the anteroposterior axis;*: significantly lower compared with the same leg of the ACL group;# significant different compared with the other leg of the same group, p < 0.05.
