| Pre | Post | t-value | p value |
LF | 5.08 ± 1.2 | 5.92 ± 1.2 | −3.34 | p = 0.009** |
HF | 5.23 ± 1.0 | 5.55 ± 1.0 | −2.20 | p = 0.056 |
LF/HF | 0.97 ± 0.1 | 1.09 ± 0.2 | −1.84 | p = 0.10 |
TP | 6.73 ± 0.7 | 7.12 ± 0.5 | −3.83 | p = 0.004** |