Comparative changes in plasma protein concentration, hematocrit and plasma volume during exercise, bedrest and + Gz acceleration.Discussion of experiments which indicate that under conditions of a constant red cell volume the proportional changes in hematocrit and plasma volume during exercise are never equal. On the basis of direct measurements and calculated changes of plasma volume it is concluded that during maximal exercise there is a small loss of protein from the plasma. It is clear that changes in content of blood constituents can only be evaluated correctly after determination of changes in plasma volume.
Document ID
19720044630
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Van Beaumont, W. (St. Louis University St. Louis, Mo., United States)
Greenleaf, J. E. (NASA Ames Research Center Biotechnology Div., Moffett Field, Calif., United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
Biosciences
Meeting Information
Meeting: Aerospace Medical Association, Annual Scientific Meeting