Evaluation of Baroreflex Effectiveness Index during Real and Simulated Microgravity: Relation to Orthostatic Intolerance

Bed Rest and Space Flight cause a significant decrease in BEI. BR causes similar changes to BEI as SF. BEI may not correlate with subjects experiencing presyncope, but error is high and n is low. Compression Garments have the potential to restore BEI after short duration BR, but do not prevent recovery