Table 2 Heart rate variability (HRV) in time and frequency domain between non-T2D and T2D resistant hypertension patients

24 hour-SDNN *

131.5 ± 9.9 [110 - 152,9]

89.1 ± 6.2 [74.9 - 103.3]

0.00

Day time SDNN *

78.5 ± 6.4 [64.7 - 92.3]

58.2 ± 4.3 [48.5 - 67.9]

0.03

Night time SDNN

104.7 ± 11.1 [80.8 -128.5]

84.7 ± 12.0 [57.6 - 111.8]

0.21

24 hour-SDANN *

122.9 ± 10.2 [101.0 - 144.8]

79.8 ± 5.4 [67.6 - 92.0]

0.00

Day time SDANN *

65.5 ± 6.5 [51.5 - 79.4]

47.8 ± 3.5 [39.7 - 55.9]

0.03

Night time SDANN

73.2 ± 10.7 [50.1 - 96.3]

67.3 ± 11.0 [42.3 - 92.3]

0.80

24 hour-pNN50 *

5.3 ± 1.6 [1.8 - 8.9]

1.8 ± 0.6 [0.3 - 3.3]

0.05

Day time pNN50 *

2.6 ± 0.7 [0.9 - 4.2]

0.5 ± 0.1 [0.1 - 0.8]

0.04

Night time pNN50 *

12.4 ± 4.7 [2.3 - 22.5]

4.2 ± 1.6 [0.5 - 7.9]

0.04

24 hour-rMSSD

27.4 ± 4.0 [18.7 - 36.1]

19.7 ± 3.6 [11.6 - 27.8]

0.17

Day time rMSSD *

19.8 ± 2.2 [14.9 - 24.7]

13.8 ± 1.9 [9.5 - 18.1]

0.05

Night time rMSSD

37.3 ± 8.2 [19.6 - 55.0]

27.8 ± 6.1 [14.0 - 41.6]

0.21

Day time LF nu

22.5 ± 3.2 [15.4 - 29.5]

25.7 ± 7.1 [9.6 - 41.8]

0.97

Night time LF nu

51.0 ± 7.1 [35.8 - 66.3]

47.1 ± 7.3 [30.5 - 63.8]

0.80

Day time HF nu

77.5 ± 3.2 [70.4 - 84.5]

74.2 ± 7.1 [58.1 - 90.3]

0.97

Night time HF nu

48.9 ± 7.1 [33.6 - 64.1]

52.8 ± 7.3 [36.2 - 69.4]

0.80