Table 1.
Average of flow magnitude during normal and forced breathing, mean ± SD across subjects.
| ROI | Average of flow magnitude (ml s−1) | ||
|---|---|---|---|
| Normal | Forced | p-value | |
| Aqd | 0.02 ± 0.01 | 0.04 ± 0.03 | 0.001* |
| C3 CSF | 0.83 ± 0.36 | 1.08 ± 0.51 | 0.016* |
| C3 EV | 0.45 ± 0.49 | 0.49 ± 0.41 | 0.175 |
| C3 IJV | 6.8 ± 2.6 | 5.5 ± 2.2 | 0.0008* |
| L3 CSF | 0.15 ± 0.07 | 0.50 ± 0.38 | 0.004* |
| L3 EV | 0.19 ± 0.16 | 0.24 ± 0.17 | 0.175 |
| L3 IVC | 25.5 ± 7.5 | 28.7 ± 8.7 | 0.047* |
Aqd = aqueduct; C3 = cervical level 3; L3 = lumbar level 3; EV = epidural veins; IJV = internal jugular vein; IVC = inferior vena cava; normal = normal breathing; forced = forced breathing; * = p < 0.05.