Table 2 Pre- and post-treatment mean values of stability index within each group and between groups

Overall stability index

Pre

3.37 ± 0.21

3.28 ± 0.16

− 0.05

0.24

0.21**

Post

2.25 ± 0.16

2.75 ± 0.15

− 0.62

− 0.38

< 0.001*

P value

< 0.001*

< 0.001*

Antero-posterior stability index

Pre

2.85 ± 0.16

2.78 ± 0.14

− 0.04

0.18

0.29**

Post

1.8 ± 0.15

2.26 ± 0.19

− 0.59

− 0.33

<v0.001*

P value

< 0.001*

< 0.001*

Medio-lateral stability index

Pre

2.32 ± 0.29

2.24 ± 0.28

− 0.13

0.30

0.42**

Post

1.65 ± 0.16

2.01 ± 0.18

− 0.49

− 0.23

< 0.001*

P value

< 0.001*

< 0.001*