Effects of a gravity gradient on human cardiovascular responses
Hastreiter, D.; Young, L.R.; Young, L.R.
Journal of Gravitational Physiology a Journal of the International Society for Gravitational Physiology 4(2): P23-P26
1997
ISSN/ISBN: 1077-9248 PMID: 11540684 Document Number: 475086
Eight subjects participated in one control and three rotation trials on a short-arm centrifuge such that the Gz levels at the feet were 0.5, 1.0, and 1.5 G. Trials consisted of 30 minutes of supine rest, 1 hour of rotation (or in the control, 30 additional minutes of rest and 30 minutes of standing), and a final 30-minute rest period. Measurements of heart rate, calf impedance, calf volume, and blood pressure support the findings that the highest G level is similar to standing and that the lower G levels fail to produce significant effects.