Table 2.
Heart rate variation during periods with and without PLMS
| Periods with PLMS | Periods without PLMS | p | r | |
|---|---|---|---|---|
| VLF power (ms) |
23.1 ± 8.5 |
13.3 ± 4.3 |
< 0.01 |
0.88 |
| LF power (ms) |
16.4 ± 6.6 |
7.7 ± 2.8 |
< 0.01 |
0.88 |
| HF power (ms) |
10.2 ± 6.5 |
11.8 ± 8.8 |
n.s. |
- |
| LF/HF |
2.25 |
1.02 |
< 0.01 |
0.88 |
| mean frequency in VLF (Hz) |
0.030 ± 0.001 |
0.028 ± 0.001 |
n.s. |
- |
| mean frequency in LF (Hz) |
0.075 ± 0.004 |
0.075 ± 0.004 |
n.s. |
- |
| mean frequency in HF (Hz) |
0.220 ± 0.016 |
0.223 ± 0.020 |
n.s. |
- |
| mean frequency in FHFB (Hz) |
0.045 ± 0.090 |
0.038 ± 0.007 |
< 0.01 |
0.76 |
| mean frequency of PLMS (Hz) | 0.035 ± 0.012 | - | - | - |
Values are expressed as mean±SD, except for LF/HF.
PLMS, periodic leg movement during sleep; VLF, very low frequency; LF, low frequency: HF, high frequency; FHFB, fluctuation of a HF band; n.s., not significant.