Measurement

HF

LF

Total

Initial

2.00 ± 1.15

3.00 ± 1.24

2.50 ± 1.27

Final

1.70 ± 1.63

2.60 ± 1.43

2.15 ± 1.56

Maintenance

1.90 ± 1.85

2.60 ± 1.43

2.25 ± 1.65