Table 5 Mean (SD), p-value* and effect size (dz) for HRV indices (n = 40)
HRV indices | Supine | Standing | P | Effect size (dz) |
|---|---|---|---|---|
iRR (ms) | 855.8 (97.2) | 738.7 (89.0) | < 0.01 | 1.61 |
SDNN (ms) | 39.3 (20.6) | 39.7 (15.5) | ||
ln SDNN | 1.54 (0.19) | 1.56 (0.19) | 0.72 | 0.09 |
RMSSD (ms) | 29.6 (22.8) | 20.8 (11.5) | ||
ln RMSSD | 1.37 (0.28) | 1.24 (0.25) | < 0.01 | 0.56 |
LF (ms2/Hz) | 544.2 (621.6) | 746.2 (610.9) | ||
ln LF | 2.56 (0.38) | 2.69 (0.44) | 0.07 | 0.28 |
HF (ms2/Hz) | 473.0 (817.7) | 204.2 (225.0) | ||
ln HF | 2.26 (0.59) | 2.02 (0.57) | < 0.01 | 0.49 |
LF/HF | 2.68 (2.08) | 6.19 (4.50) | ||
ln LF/HF | 0.29 (0.35) | 0.67 (0.35) | < 0.01 | 1.38 |