Table 2 Paired t-test results of before and after VFTs

6.84 ± 0.90

8.04 ± 1.02

1.20 ± 1.38

8.227

0.985

7.04 ± 1.04

7.86 ± 1.06

0.82 ± 1.44

4.492

0.152

6.06 ± 1.01

6.88 ± 0.99

0.82 ± 1.81

5.592

0.924

5.89 ± 0.95

7.01 ± 1.03

1.12 ± 1.25

7.411

0.715

6.03 ± 0.92

8.23 ± 1.43

2.20 ± 1.56

11.554

0.043*

6.62 ± 0.98

7.99 ± 0.91

0.97 ± 1.39

7.341

0.692

5.91 ± 7.84

6.84 ± 1.04

0.93 ± 1.25

7.070

0.799

5.86 ± 1.01

7.62 ± 0.91

1.76 ± 1.33

7.815

0.618