Table 2 Electrographic and Heart Rate Variability parameters in the study groups.

From: Analysis of ventricular repolarization parameters and heart rate variability in obesity: a comparative study

Parameters

Normal (n = 30)

Overweight (n = 30)

Obese (n = 30)

p value

Heart rate (bpm)

68.69 ± 10.57

74.34 ± 7.97

74.83 ± 8.59

0.018*

TPe interval (ms)

56.23 ± 3.81

57.18 ± 7.33

60.63 ± 7.58

0.026*

QT interval (ms)

341.08 ± 25.63

342.30 ± 17.23

345.86 ± 22.08

0.681

QTc interval (ms)

362.09 ± 17.36

380.17 ± 22.78

385.03 ± 25.01

< 0.001*

Tpe/QT ratio

0.17 ± 0.02

0.17 ± 0.02

0.18 ± 0.02

0.136

Tpe/QTc ratio

0.16 ± 0.01

0.15 ± 0.02

0.16 ± 0.02

0.429

Tpec/QTc ratio

0.159 + 0.002

0.161 + 0.004

0.164 + 0.003

0.657

JT interval (ms)

243.03 ± 25.48

244.53 ± 17.10

240.87 ± 42.76

0.724

AVERR

902.26 ± 133.78

837.94 ± 100.11

817.15 ± 89.92

0.009*

MEDRR

900.50 ± 134.71

837.01 ± 100.50

816.36 ± 90.94

0.011*

SDRR

49.64 ± 17.17

48.55 ± 17.85

44.88 ± 18.80

0.563

SDSD

49.28 ± 24.41

39.29 ± 20.17

38.48 ± 21.75

0.116

RMSSD

49.23 ± 24.38

39.41 ± 20.13

38.45 ± 21.73

0.12

PRR50

28.13 ± 23.11

20.82 ± 19.92

15.79 ± 17.04

0.064

TOTAL POWER

2634.30 ± 2002.35

2673.08 ± 1794.37

2146.24 ± 1895.99

0.491

VLF POWER

624.79 ± 486.73

862.18 ± 591.17

882.69 ± 692.79

0.183

LF POWER

760.77 ± 821.19

856.41 ± 931.42

490.44 ± 417.20

0.157

HF POWER

1201.25 ± 1031.22

931.94 ± 963.71

957.45 ± 1348.87

0.595

VLF POWER%

28.92 ± 14.96

37.07 ± 18.09

43.27 ± 17.09

0.006*

LF POWER%

27.62 ± 11.37

30.42 ± 11.70

23.01 ± 7.55

0.024*

HF POWER %

41.56 ± 17.83

31.81 ± 19.47

32.49 ± 16.97

0.072

LF POWER NU

41.34 ± 20.43

51.59 ± 19.32

43.94 ± 17.52

0.104

HF POWER NU

56.31 ± 18.60

47.49 ± 18.32

53.84 ± 16.77

0.151

LF/HF

1.16 ± 1.56

1.45 ± 1.08

1.21 ± 1.79

0.726

  1. *p−value at significant level that is <0.05, Values mentioned as (Mean ± SD), ANOVA test for continuous variables. Abbreviations: Tpe = T peak to T end, QTc = Corrected QT interval, VLF = Very low frequency, LF = Low frequency, HF = High frequency, LF(nu) = Low frequency in normalised units, HF(nu) = High frequency in normalised units, SD = Standard Deviation, AVRR = Average RR interval, MEDRR = median RR interval, SDRR = Standard deviation of RR intervals, SDSD = standard deviation of differences between adjacent RR intervals, RMSSD = square root of the mean squared differences of successive RR intervals, Prr50 = percentage of adjacent RR differing by more than 50ms.
Back to article page