Table 2.
Correlations (Spearman’s rank coefficients) for the relations between hormones, pre-sleep mood and heart rate variability spectral indices during the mid-luteal phase in PMS and control groups of women. Significant correlations (p < .05) in bold.
| NREM | REM | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||||
| Spearman Rank | Heart rate | HF peak frequency | HF power | LF/HF ratio | Total Power | Heart rate | HF peak frequency | HF power | LF/HF ratio | Total Power | |
| PMS | Progesterone | -0.44 | -0.46 | 0.15 | 0.40 | 0.28 | -0.48 | -0.36 | 0.36 | 0.59 | 0.47 |
| Estradiol | -0.16 | -0.41 | -0.03 | -0.01 | -0.01 | -0.21 | -0.26 | -0.03 | 0.54 | 0.10 | |
| Pre-sleep Mood | 0.50 | 0.18 | -0.11 | -0.35 | -0.27 | 0.45 | -0.04 | -0.06 | -0.62 | -0.17 | |
|
| |||||||||||
| Control | Progesterone | 0.32 | -0.13 | -0.58 | 0.93 | -0.24 | 0.31 | -0.07 | -0.49 | 0.71 | -0.15 |
| Estradiol | 0.45 | -0.54 | -0.39 | 0.21 | -0.33 | 0.32 | -0.70 | -0.37 | 0.30 | -0.22 | |
| Pre-sleep Mood | -0.25 | 0.25 | 0.50 | -0.06 | 0.54 | -0.15 | 0.42 | 0.37 | -0.22 | 0.33 | |
HF = high frequency; LF = low frequency; NREM = non-rapid eye movement sleep; REM = rapid eye movement sleep