Table 1 Mean flow rates of the major cervical vessels.

From: External to internal cranial perfusion shifts during simulated weightlessness: Results from a randomized cross-over trial

Mean flow [ml/min]

Baseline

Supine

HDT

 

1 h

21 h

1 h

21 h

ECA

239.6 ± 18.7

260.1 ± 21.1

249.1 ± 23.1

324.3 ± 20.5*

343.9 ± 23.2*

ICA

490.7 ± 16.7†

457.0 ± 18.0*

441.1 ± 18.0

453.1 ± 17.8*

453.1 ± 17.8*

IJV

480.0 ± 81.6

455.4 ± 84.0

398.9 ± 83.8

589.6 ± 83.4*

612.5 ± 84.3*

VA

173.0 ± 34.4

171.2 ± 35.2

168.2 ± 35.2

171.9 ± 35.0

167.1 ± 35.3

  1. Table summarizing the mean flow rate of the internal jugular veins, the external and internal carotid arteries at each of the respective positions and time points.
  2. †P < 0.05; *P < 0.001 (linear mixed effect models were used for statistical analysis); ECA External carotid artery, ICA Internal carotid artery, IJV Internal jugular vein, VA Vertebral artery
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