Table 2 Fast Fourier transform (FFT) analysis of heart rate variability [14] in finisher and non-finisher astronauts.
| Â | Main effects | Group | Pre-flight | Landing day | 3 days post-flight | Inter-actions | |||
|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Supine | Stand | Supine | Stand | Supine | Stand | Â |
subjects | Â | F | 21 | 21 | 21 | 21 | 21 | 21 | Â |
| Â | Â | NF | 8 | 8 | 8 | 6 | 8 | 8 | Â |
PTOT (ms2) | * | F | 1055(165) | 802(169) | 875(174) | 479(165) | 1110(169) | 559(179) | Â |
| Â | Â | NF | 930(286) | 515(286) | 1018(286) | 362(309) | 2124(338) | 455(286) | Â |
PHI (ms2) | * | F | 664(90) | 51(92) | 311(95) | 35(90) | 465(92) | 78(97) | Â |
| Â | Â | NF | 542(155) | 106(155) | 544(155) | 80(168) | 1111(184) | 118(155) | Â |
PLO (ms2) | Â | F | 391(109) | 752(112) | 564(115) | 444(109) | 644(112) | 482(119) | a |
| Â | Â | NF | 389(189) | 408(169) | 474(190) | 282(205) | 1013(224) | 337(189) | Â |
(PLO/PHI)1/2 | * # †| F | 20.9(1.5) | 7.0(1.6) | 15.6(1.6) | 5.2(1.5) | 19.4(1.6) | 7.0(1.7) |  |
| Â | Â | NF | 22.2(2.7) | 9.9(2.7) | 20.8(2.7) | 7.2(2.9) | 30.7(3.2) | 9.3(2.7) | Â |
PLO/PTOT | * # †| F | 0.47(0.03) | 0.89(0.03) | 0.64(0.03) | 0.90(0.03) | 0.56(0.03) | 0.88(0.03) |  |
| Â | Â | NF | 0.43(0.05) | 0.76(0.05) | 0.52(0.05) | 0.83(0.05) | 0.46(0.06) | 0.78(0.05) | Â |