Table 4.
Autonomic nervous system function before and after training with main analysis of variance results
| Measure | CON | EXP | η2 (P) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Before | After | Mean change (95% CI) | Before | After | Mean change (95% CI) | Time | Group | Interaction | |
| Mean RR (ms) | 837.35 ± 97.96 | 822.31 ± 92.48 | –15.04 (–62.94 to 32.85) | 830.20 ± 75.14 | 881.03 ± 74.02 | 50.83 (33.27 to 68.39)‡ | 0.061 (0.148) | 0.028 (0.325) | 0.179 (0.010)§ |
| SDNN (ms) | 35.60 ± 9.35 | 35.05 ± 10.95 | –0.55 (–5.05 to 3.95) | 34.87 ± 9.68 | 39.96 ± 8.52 | 5.08 (3.22 to 6.94)‡ | 0.102 (0.058) | 0.014 (0.491) | 0.149 (0.020)§ |
| RMSSD (ms) | 20.87 ± 6.88 | 22.74 ± 7.86 | 1.87 (0.34 to 3.40)* | 20.20 ± 7.57 | 26.63 ± 7.27 | 6.42 (5.12 to 7.72)‡ | 0.691 (0.000)§ | 0.013 (0.510) | 0.402 (0.000)§ |
| TP (ms2) | 6.82 ± 0.58 | 6.92 ± 0.58 | 0.10 (–0.04 to 0.24) | 7.02 ± 0.69 | 7.36 ± 0.66 | 0.34 (0.23 to 0.46)‡ | 0.445 (0.000)§ | 0.065 (0.133) | 0.195 (0.007)§ |
| LF (ms2) | 5.47 ± 0.60 | 5.51 ± 0.63 | 0.04 (–0.11 to 0.19) | 5.30 ± 0.63 | 5.19 ± 0.70 | –0.12 (–0.40 to 0.16) | 0.008 (0.607) | 0.041 (0.236) | 0.031 (0.304) |
| HF (ms2) | 5.20 ± 0.65 | 5.16 ± 0.67 | –0.04 (–0.33 to 0.25) | 5.14 ± 1.01 | 5.46 ± 0.94 | 0.32 (0.23 to 0.41)‡ | 0.100 (0.061) | 0.006 (0.641) | 0.156 (0.017)§ |
| LF/HF | 1.06 ± 0.14 | 1.07 ± 0.10 | 0.01 (–0.05 to 0.07) | 1.05 ± 0.14 | 0.96 ± 0.13 | –0.09 (–0.14 to –0.04)† | 0.114 (0.044)§ | 0.066 (0.129) | 0.184 (0.009)§ |
| Salivary cortisol (μg/dL) | 0.27 ± 0.11 | 0.35 ± 0.18 | 0.08 (–0.01 to 0.16) | 0.31 ± 0.17 | 0.29 ± 0.15 | -0.01 (–0.11 to 0.08) | 0.032 (0.297) | 0.001 (0.837) | 0.065 (0.132) |
Values are presented as mean± standard deviation.
*
P< 0.05; †P< 0.01; ‡P< 0.001 vs. before training; §Significant interaction or main effect.
CON, control group; EXP, experimental group; CI, confidence interval; SDNN, standard deviation of NN intervals; RMSSD, root mean square of successive differences; TP, total power; LF, low frequency; HF, high frequency.