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.