Voskresenskiĭ A D, Degtiarev V A, Doroshev V G, Chekanova S L
Kosm Biol Aviakosm Med. 1985 Jan-Feb;19(1):4-5.
The method of main components was used to examine separately the cosmonauts' responses to LBNP tests on the ground and in space flight. The factor structures of the ground- and flight data did not show significant differences. In both cases the first factor can be termed the factor of venous return and the second, the factor of the cardiac state. The first two factors were responsible for about 60%, and the first three factors for 76-78% of data scatter. The observation that the factor structure remains unchanged indicates that LBNP reactions in space flight can be evaluated using the criteria applied on the Earth.
采用主成分分析法分别考察了宇航员在地面和太空飞行中对下体负压试验的反应。地面数据和飞行数据的因子结构没有显著差异。在这两种情况下，第一个因子可称为静脉回流因子，第二个因子可称为心脏状态因子。前两个因子约占数据离散度的60%，前三个因子约占76 - 78%。因子结构保持不变这一观察结果表明，太空飞行中的下体负压反应可以用地球上应用的标准来评估。
