Table 2 Variation of linear parameters for various age group normal subjects
From: Heart rate analysis in normal subjects of various age groups
PARAMETERS | 10 ± 5 years | 25 ± 10 years | 40 ± 15 years | 60 ± 5 years | 'p' value |
|---|---|---|---|---|---|
SDNN | 92.96 ≤ 48.60357 | 81.30984 ≤ 38.87531 | 49.3888 ≤ 21.5635 | 70.89301 ≤ 61.20758 | 0.0007 |
SDSD | 89.24 ≤ 64.86 | 80.56024 ≤ 62.02868 | 37.58513 ≤ 20.31865 | 78.50874 ≤ 93.46987 | 0.0067 |
RMSSD | 88.482 ≤ 65.6591 | 80.1892 ≤ 62.338 | 37.56944 ≤ 20.31005 | 78.43348 ≤ 93.34064 | 0.008 |
Pnn50 | 12.9144 ≤ 8.469 | 15.2694 ≤ 9.97441 | 3.17521 ≤ 4.08388 | 9.77243 ≤ 19.8519 | < 0.0001 |
Triangle index | 0.018 ≤ 0.0049 | 0.0163 ≤ 0.0047 | 0.0123 ≤ 0.0046 | 0.017 ≤ 0.01482 | 0.0038 |
TiNN | 121.51 ≤ 234 | 154.188 ≤ 372.983 | 421.60714 ≤ 619.8746193 | 113 ≤ 648 | 0.024 |