Analysis of Arterial Mechanics During Head-Down-Tilt Bed RestCarotid, brachial, and tibial arteries reacted differently to HDTBR. Previous studies have not analyzed the mechanical properties of the human brachial or anterior tibial arteries. After slight variations during bed-rest, arterial mechanical properties and IMT returned to pre-bed rest values, with the exception of tibial stiffness and PSE, which continued to be reduced post-bed rest while the DC remained elevated. The tibial artery remodeling was probably due to decreased pressure and volume. Resulting implications for longer duration spaceflight are unclear. Arterial health may be affected by microgravity, as shown by increased thoracic aorta stiffness in other ground based simulations (Aubert).
Document ID
20140010604
Acquisition Source
Johnson Space Center
Document Type
Presentation
Authors
Elliott, Morgan B. (Universities Space Research Association Houston, TX, United States)
Martin, David S. (Saint Louis Univ. MO, United States)
Westby, Christian M. (Universities Space Research Association Houston, TX, United States)
Stenger, Michael B. (Wyle Science, Technology and Engineering Houston, TX, United States)
Platts, Steven H. (NASA Johnson Space Center Houston, TX, United States)
IDRelationTitle20140010332See AlsoAnalysis of Arterial Mechanics During Head-down Tilt Bed Rest20140010593See AlsoAnalysis of Arterial Mechanics during Head Down Tilt Bed Rest