Table 3.
Results of two-way repeated-measures ANOVA for changes in deoxy-Hb and oxy-Hb in the superficial layer over the forehead in response to hypoxia.
| Items | Variables | Results of two-way repeated measures ANOVA | |||
|---|---|---|---|---|---|
| Deoxy-Hb |
Ch | 1.00 | 0.16 | 0.695 | 0.01 |
| Error |
14.00 |
— |
— |
— |
|
| Time | 1.46 | 5.13 | 0.024* | 0.27 | |
| Error |
20.39 |
— |
— |
— |
|
| Ch* time | 1.37 | 0.35 | 0.632 | 0.02 | |
| Error |
19.22 |
— |
— |
— |
|
| Oxy-Hb | Ch | 1.00 | 0.01 | 0.936 | 0.00 |
| Error |
14.00 |
— |
— |
— |
|
| Time | 1.70 | 0.35 | 0.677 | 0.02 | |
| Error |
23.87 |
— |
— |
— |
|
| Ch* time | 1.52 | 0.16 | 0.791 | 0.01 | |
| Error | 21.29 | — | — | — | |
The effects of hypoxia on changes in hemodynamics in the superficial layer over the forehead (time) and differences between FPL and FPR (Ch) were analyzed using two-way repeated-measures ANOVA (Ch × time). Asterisks indicate significant main effect of time or Ch or interaction at *.
Abbreviations: oxy-Hb, oxygenated hemoglobin; deoxy-Hb, deoxygenated hemoglobin; total-Hb, FPL, left frontal pole; FPR, right frontal pole; ANOVA, analysis of variance.