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Related Experiment Video

Updated: Feb 13, 2026

Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats
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Body composition and metabolic changes during a 520-day mission simulation to Mars.

F Strollo1, C Macchi1, I Eberini1

  • 1Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy.

Journal of Endocrinological Investigation
|March 14, 2018
PubMed
Summary

Prolonged space confinement negatively impacts astronaut health, decreasing body mass and increasing glucose levels. Countermeasures like exercise are crucial for mitigating these metabolic and body composition changes during long-duration missions.

Keywords:
"Mars-500 project"AdiponectinChronic stressGenderInsulin resistanceMaleMars mission

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Area of Science:

  • Space Medicine
  • Human Physiology
  • Metabolic Studies

Background:

  • The Mars-500 project simulated long-duration space missions.
  • Understanding physiological adaptation to confinement is vital for astronaut health.

Purpose of the Study:

  • To assess the effects of prolonged confinement on body composition, glucose metabolism, and adipokine levels.
  • To inform the development of countermeasures for future space missions.

Main Methods:

  • A 520-day confinement study involving six male subjects.
  • Monitoring body mass, BMI, glucose, insulin, and adipokine levels over time.

Main Results:

  • Significant decreases in body mass and BMI were observed.
  • Fasting plasma glucose levels increased significantly, indicating impaired glucose metabolism.
  • Adiponectin levels, including high molecular weight adiponectin, decreased substantially.

Conclusions:

  • Prolonged confinement leads to detrimental metabolic and body composition changes.
  • Enhanced exercise programs and monitoring are needed to counteract these effects.
  • Individual activity and metabolic health monitoring are key for astronaut well-being.