Artificial gravity training improves orthostatic tolerance in ambulatory men and women

Michael B. Stenger, Joyce M. Evans, Abhijit R. Patwardhan, Fritz B. Moore, Helmut Hinghofer-Szalkay, Andreas Rössler, Michael G. Ziegler, Charles F. Knapp

Research output: Contribution to journalArticlepeer-review

29 Scopus citations


Orthostatic intolerance (OI) continues to be a problem experienced by astronauts upon return from spaceflight. Artificial gravity (AG) training via short radius centrifugation has been suggested as a countermeasure to this OI. The purpose of our research was to determine effects of three weeks of intermittent (+1 to +2.5Gz for 35 min/day) AG exposure on normal, ambulatory men and women. The results of this study indicate that 3 weeks of AG training improved orthostatic tolerance in a group of 14 men and 12 women by an average of 13.6%. This improvement was associated with a decrease in arterial pressure and vascular resistance, and increases in stroke volume and low frequency (0.04-0.15 Hz) arterial pressure and heart rate spectral power. These results suggest that improvement may be attributable to increased venous return possibly as a function of increased stress-induced sympathetic activity and/or vascular sympathetic responsiveness.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalActa Astronautica
Issue number4-7 SPEC. ISS.
StatePublished - Feb 2007


  • Artificial gravity
  • Centrifuge
  • Countermeasure
  • Gender

ASJC Scopus subject areas

  • Aerospace Engineering


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