Table 2.
Summary of main effects and interactions of the two- and three-way repeated measures ANOVAs performed in this study.
| Source | F statistic | p value | |
|---|---|---|---|
| Three-way RM-ANOVA investigating differences in aBV at the level of the Circle of Willis | Physiological state | F(1,7) = 2.1 | 0.192 |
| ROI | F(4,28) = 3.0 | 0.055 | |
| Cardiac phase | F(5,35) = 5.9 | 0.002a | |
| Physiological state × ROI | F(4,28) = 0.6 | 0.675 | |
| Physiological state × Cardiac phase | F(5, 35) = 3.1 | 0.028a | |
| ROI × Cardiac phase | F(20, 140) = 0.6 | 0.866 | |
| Physiological state × ROI × Cardiac phase | F(20, 140) = 1.4 | 0.177 | |
| Two-way RM-ANOVA investigating differences in AC at the level of the Circle of Willis | Physiological state | F(1,7) = 10.7 | 0.014a |
| ROI | F(4,28) = 2.0 | 0.139 | |
| Physiological state × ROI | F(4,28) = 2.6 | 0.082 | |
| Two-way RM-ANOVA investigating differences in AC over six different slices | Physiological state | F(1,7) = 5.7 | 0.048a |
| Slice | F(5,35) = 4.7 | 0.004a | |
| Physiological state × Slice | F(5,35) = 3.2 | 0.017a |
RM-ANOVA: repeated measures analysis of variance; aBV: arterial blood volume; ROI: region of interest; AC: arterial compliance.
a
Significant results (p < 0.05).