Table 1.
Heart rate variability in type 2 diabetic rats
| HRV Indices | Control | Diabetic | Vitamin C |
| HR (bpm) | 282.2 ± 8 | 78.3 ± 17.5c | 277.8 ± 11 |
| RR Interval (ms) | 220.5 ± 14 | 872.5 ± 94d | 222.7 ± 13 |
| Max/Min RR | 3.4 ± 0.2 | 1.4 ± 0.2a | 3.5 ± 0.1 |
| SDNN (ms) | 72.1 ± 11 | 48.6 ± 1.6a | 68.2 ± 7 |
| RMSSD (ms) | 107.5 ± 11.5 | 65.1 ± 1.0b | 98 ± 13 |
| TP (ms2) | 45159.3 ± 7839 | 290.4 ± 0.5d | 44927.8 ± 7832 |
| LF (ms2) | 5434 ± 877 | 126.5 ± 4.6d | 5338.7 ± 1198 |
| HF (ms2) | 19574.1 ± 4019 | 108.4 ± 7d | 14634.1 ± 4866 |
| nLF | 5.9 ± 2.3 | 44.2 ± 2c | 5.7 ± 1 |
| nHF | 16.2 ± 3.4 | 38.5 ± 2a | 13.4 ± 3 |
Results are presented as mean ± SE, n = 10;
a
P < 0.05,
b
P < 0.01,
c
P < 0.001,
d
P < 0.0001, significantly different from control. HRV: Heart rate variability; HR: Heart rate; RR interval: Interval between two QRS wave complex; SDNN: Standard deviation of successive normal intervals; RMSSD: Root mean square of the difference between successive normal RR interval; TP: Total power; LF: Low frequency; HF: High frequency; nLF: Normalised low frequency; nHF: Normalised high frequency.