Egorov A D, Poliakova A P
Kosm Biol Aviakosm Med. 1983;17(1):33-7.
Before and during prolonged space flights changes of systolic time intervals in response to LBNP tests were qualitatively similar and corresponded to the syndrome of myocardial hypodynamics due to insufficient venous return. However, the level of the changes and their contribution to the cardiac cycle were different in flight and on the ground. Greater changes in systolic time intervals seen in flight may be attributed to larger blood shifts to the abdomen and legs.
在长时间太空飞行之前和期间，对下体负压试验的收缩期时间间隔变化在性质上相似，且与静脉回流不足导致的心肌动力不足综合征相符。然而，飞行中和地面上这些变化的程度及其对心动周期的影响有所不同。飞行中收缩期时间间隔出现的更大变化可能归因于血液更多地转移到腹部和腿部。
