Table 2 Breath rate and HRV measures in breath awareness sessions.

Breath rate (breaths/min)

15.39 ± 3.52

14.61 ± 3.80

15.03 ± 3.79

14.93 ± 3.76

16.13 ± 3.32

16.24 ± 3.33

16.20 ± 3.74

LF (nu)

71.09 ± 3.30

72.08 ± 3.43

72.52 ± 3.50

72.63 ± 2.62*

72.39 ± 2.80

72.73 ± 2.21*

72.81 ± 2.49*

HF (nu)

28.91 ± 3.30

27.92 ± 3.43

27.48 ± 3.50

27.37 ± 2.62*

27.61 ± 2.80

27.27 ± 2.21*

27.19 ± 2.49*

LF/HF (nu)

2.50 ± 0.36

2.63 ± 0.43

2.70 ± 0.48

2.69 ± 0.38

2.66 ± 0.35

2.69 ± 0.30

2.71 ± 0.32**

Mean RR (sec)

1.01 ± 0.17

1.01 ± 0.16

1.00 ± 0.16

1.00 ± 0.16

0.98 ± 0.15*

0.95 ± 0.15***

0.94 ± 0.15***

NN50 (count)

139.95 ± 55.77

137.97 ± 51.33

134.87 ± 54.23

133.53 ± 51.92

127.00 ± 51.98

122.03 ± 53.62

110.21 ± 59.33**

pNN50 (%)

48.69 ± 21.62

47.09 ± 19.85

46.07 ± 21.05

45.45 ± 20.61

42.74 ± 20.34

39.31 ± 20.57**

35.69 ± 21.71***