Table 5.
Analysis of heart rate variability parameters on supine position according to group and moment of evaluation.
| Variables | Moment | Groups | Effect Size (ηp2) | ||
|---|---|---|---|---|---|
| Control | Experimental | ||||
| Time domain | SDNN (ms) | Initial | 35.70 ± 13.07 | 31.74 ± 17.50 | 0.034 |
| Final | 37.04 ± 12.71 | 41.42 ± 22.85 # | 0.000 | ||
| ηp2 | 0.006 | 0.328 | |||
| RMSSD (ms) | Initial | 37.46 ± 19.40 | 36.51 ± 25.64 | 0.010 | |
| Final | 37.45 ± 14.38 | 42.31 ± 23.57 | 0.003 | ||
| ηp2 | 0.002 | 0.199 | |||
| Frequency domain | LF (ms2) | Initial | 602 ± 334 | 358 ± 423 | 0.149 |
| Final | 645 ± 457 | 841 ± 1044 # | 0.004 | ||
| ηp2 | 0.000 | 0.369 | |||
| HF (ms2) | Initial | 655 ± 660 | 629 ± 722 | 0.015 | |
| Final | 585 ± 522 | 945 ± 1090 | 0.018 | ||
| ηp2 | 0.018 | 0.202 | |||
| Total (ms2) | Initial | 1306 ± 798 | 1024 ± 1065 | 0.064 | |
| Final | 1294 ± 939 | 1916 ± 2316 # | 0.003 | ||
| ηp2 | 0.006 | 0.293 | |||
| LF/HF | Initial | 1.38 ± 0.74 | 0.90 ± 0.75 | 0.086 | |
| Final | 1.51 ± 0.83 | 1.09 ± 0.82 | 0.057 | ||
| ηp2 | 0.012 | 0.059 | |||
| Non-Linear | SampEn | Initial | 1.792 ± 0.137 | 1.698 ± 0.277 | 0.032 |
| Final | 1.673 ± 0.212 | 1.629 ± 0.295 | 0.006 | ||
| ηp2 | 0.044 | 0.036 | |||
| DFA Alfa 1 | Initial | 0.988 ± 0.218 | 0.836 ± 0.275 | 0.071 | |
| Final | 0.991 ± 0.100 | 0.948 ± 0.280 | 0.007 | ||
| ηp2 | 0.000 | 0.194 | |||
Note. SDNN, standard deviation of normal–normal beats; RMSSD, root-mean-square of successive RR intervals. LF, low frequency; HF, high frequency; LF/HF, ratio between high and low frequencies; ηp2, partial eta squared. Values expressed as the mean ± standard deviation; # p < 0.05 versus experimental group-initial; two-way RM ANOVA and Bonferroni’s test.