Table 1.
Heart rate variability indices (LF, HF, LF+HF, LF/HF) and heart rate (HR) at Rest, Task, and After periods in the normal (Control), major depressive disorder (MDD), and chronic fatigue syndrome (CFS) subjects (mean ± s.d.).
| LF | Rest (ms2) | Task (ms2) | After (ms2) | F | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Control | 780 ± 742 | 517 ± 475 | ↓ | 966 ± 799 | ↑ | 10.9 | |||||
| MDD | 266 ± 320 | ▼ | 340 ± 463 | 572 ± 821 | ↑ | 10.2 | |||||
| CFS | 601 ± 979 | 469 ± 438 | 802 ± 1328 | ||||||||
| F | 6.2 | ||||||||||
| HF | |||||||||||
| Control | 388 ± 368 | 136 ± 122 | ↓ | 438 ± 392 | 28.6 | ||||||
| MDD | 77 ± 105 | ▼ | 86 ± 127 | 165 ± 215 | ↑ | ▼ | 15.0 | ||||
| CFS | 214 ± 255 | ▼ | # | 152 ± 165 | 395 ± 587 | ↑ | # | 9.5 | |||
| F | 16.6 | 5.8 | |||||||||
| LF+HF | |||||||||||
| Control | 780 ± 742 | 517 ± 475 | ↓ | 966 ± 799 | 10.9 | ||||||
| MDD | 266 ± 320 | ▼ | 340 ± 463 | 572 ± 821 | ↑ | 10.2 | |||||
| CFS | 815 ± 1129 | # | 622 ± 588 | # | 1196 ± 1656 | # | 5.4 | ||||
| F | 7.2 | 3.7 | 3.6 | ||||||||
| LF/HF | |||||||||||
| Control | 1.58 ± 1.49 | 4.10 ± 4.11 | ↑ | 1.71 ± 1.37 | 17.4 | ||||||
| MDD | 3.34 ± 3.71 | 4.93 ± 5.00 | 3.60 ± 3.73 | ▲ | 3.2 | ||||||
| CFS | 4.98 ± 8.99 | ▲ | 4.63 ± 3.98 | 3.19 ± 3.17 | ▲ | ||||||
| F | 4.2 | 5.3 | |||||||||
| HR | |||||||||||
| Control | 73.2 ± 8.51 | 82.2 ± 9.6 | ↑ | 72.4 ± 8.7 | 58.9 | ||||||
| MDD | 80.6 ± 12.2 | ▲ | 84.4 ± 13.7 | ↑ | 79.0 ± 11.9 | ↓ | ▲ | 36.6 | |||
| CFS | 79.2 ± 10.8 | ▲ | 85.1 ± 13.1 | ↑ | 77.6 ± 12.1 | 36.0 | |||||
| F | 6.4 | 4.6 |
ANOVA F values are presented on the right side of the After column when the effect of the period is significant. Upward (↑) and downward (↓) arrows indicate a significant increase and a decrease from the Rest score, respectively (p < 0.05). ANOVA F values are presented at the bottom of the column when the effect of the group is significant. Upward (▲) and downward (▼) triangles indicate that the scores are significantly higher and lower than the Control score, respectively (p < 0.05). A number sign (#) indicates the presence of a significant difference between the scores in MDD and CFS (p < 0.05). Detailed descriptions of statistics are found in the text.