Table 3.
Autonomic Measures
| Controls (N = 9) | Narcolepsy (N = 9) | P-value | |
|---|---|---|---|
| male/ female | 9/0 | 9/0 | |
| Age (years) | 29.2 ± 4.1) | 32.6 ± 16.2 | 0.55 |
| BMI (kg/m2) | 24.9 ± 2.6) | 26.2 ± 2.1 | 0.31 |
| Total Power in HRV spectrum × 104s2/Hz | 27.8 ± 14.1 | 77.4 ± 52.0 | 0.01* |
| - VLF (0–0.04 Hz) × 104s2/Hz | 12.6 ± 8.2 | 30.7 ± 22.0 | 0.03* |
| - LF (0.04–0.15 Hz) × 104s2/Hz | 9.7 ± 5.5 | 30.6 ± 24.2 | 0.02* |
| - HF (0.15–0.4 Hz) × 104s2/Hz | 5.6 ± 2.9 | 16.2 ± 14.9 | 0.05 |
| LF/HF Ratio | 1.9 ± 1.1 | 2.3 ± 1.2 | 0.48 |
| Mean heart rate (BPM) | 59.6 ± 8.8 | 56.7 ± 5.4 | 0.42 |
| Mean diastolic blood pressure (DBP, mm Hg) | 55.8 ± 9.0 | 52.8 ± 6.9 | 0.44 |
| Mean systolic blood pressure (SBP, mm Hg) | 104.0 ± 13.7 | 99.5 ± 17.6 | 0.55 |
| Total power in SBP spectrum × 104mm Hg2/Hz | 27.5 ± 11.1 | 47.7 ± 19.7 | 0.02* |
| Total power in DBP spectrum × 104mm Hg2/Hz | 6.8 ± 3.5 | 16.7 ± 7.9 | <0.00* |
Values in the table are means ± standard deviation. T-tests were used to assess group differences.
BMI, body mass index; HRV, heart rate variability; s, seconds; Hz, hertz, VLF, very low frequency; LF, low frequency; HF, high frequency; BMP, beats per minute; SBP, systolic blood pressure; DBP; diastolic blood pressure.