Table 3.
Mean (SD) kurtosis (KT) and skewness (SK) of the LDF and PPG signal spectral bands obtained in both groups.
| Component | Massage (Group 1) | Hyperoxia (Group 2) | |||
|---|---|---|---|---|---|
| KT | SK | KT | SK | ||
| cardiac | LDF | 1.82 (0.26) | 0.13 (0.08) | 1.92 (0.20) | 0.30 (0.13) |
| PPG | 1.74 (0.12) | 0.17 (0.07) | 1.90 (0.50) | 0.40 (0.30) | |
| p | <0.001* | 0.001* | 0.054 | 0.040* | |
| respiratory | LDF | 4.17 (1.06) | 1.10 (0.41) | 2.95 (0.76) | 0.66 (0.35) |
| PPG | 4.03 (0.87) | 1.12 (0.30) | 2.80 (0.60) | 0.60 (0.30) | |
| p | 0.217 | 0.866 | 0.300 | 0.251 | |
| myogenic | LDF | 2.19 (0.34) | 0.18 (0.17) | 2.46 (0.45) | 0.41 (0.26) |
| PPG | 2.15 (0.18) | 0.10 (0.16) | 2.30 (0.20) | 0.30 (0.20) | |
| p | 0.095 | 0.012* | 0.001* | 0.016* | |
| sympathetic | LDF | 2.17 (0.30) | 0.07 (0.18) | 2.19 (0.24) | 0.04 (0.24) |
| PPG | 2.12 (0.24) | 0.03 (0.23) | 2.10 (0.20) | −0.10 (0.20) | |
| p | 0.007* | 0.384 | 0.003* | 0.050* | |
| endothelial NOd | LDF | 2.17 (0.37) | 0.03 (0.22) | 2.17 (0.36) | 0.03 (0.32) |
| PPG | 2.16 (0.31) | −0.01 (0.26) | 2.10 (0.30) | 0.00 (0.20) | |
| p | 0.407 | 0.401 | 0.375 | 0.315 | |
| endothelial NOi | LDF | 2.11 (0.38) | −0.11 (0.31) | 2.07 (0.34) | −0.06 (0.32) |
| PPG | 2.25 (0.42) | 0.01 (0.33) | 2.20 (0.50) | −0.100 (0.30) | |
| p | 0.125 | 0.061 | 0.510 | 0.244 | |
Statistical comparison between feet and between techniques is presented (T – test foot, C – control foot, *p < 0.05).