Cardiovascular responses to microgravity - Adaptation, maladjustment, and countermeasuresHumans have worked in space for up to 237 days without significant inflight limitations, although major cardiovascular disability is seen following space flight of even a few days duration. Most of the cardiovascular research on microgravity deconditioning has been observational in character. Detailed studies of mechanisms and causes of postflight exercise intolerance, low blood pressure and fainting in astronauts and cosmonauts have not been done, despite almost 30 years of manned space flight. A review of possible mechanisms of postflight cardiovascular deconditioning and directions for study is provided.
Document ID
19900030661
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gaffney, F. Andrew (NASA Life Sciences Div. Washington, DC, United States)