Study Finds Two-Thirds of Earth's Gravity Needed for Muscle Health on Moon and Mars
A research team including the Japan Aerospace Exploration Agency (JAXA) has determined that approximately two-thirds of Earth's gravity is required to maintain essential muscle functions, such as grip strength and posture, in space environments. The study, conducted using the MARS artificial gravity device aboard the International Space Station's Kibo module, involved raising mice for one month under four distinct gravity conditions: microgravity (0G), Mars-like gravity (0.33G), intermediate gravity (0.67G), and Earth gravity (1G). Results indicated that even the gravity level of Mars (one-sixth of Earth's) is insufficient to prevent muscle weakening, particularly in the soleus muscle responsible for maintaining posture. This finding is critical for the Artemis project and future long-term human habitation on the Moon and Mars, highlighting the necessity of artificial gravity solutions to protect astronaut health. The research underscores that current natural gravity levels on these celestial bodies pose significant health risks, necessitating technological interventions to ensure physiological stability during extended missions.
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Study Finds Two-Thirds of Earth's Gravity Needed for Muscle Health on Moon and Mars
A research team including the Japan Aerospace Exploration Agency (JAXA) has determined that approximately two-thirds of Earth's gravity is required to maintain essential muscle functions, such as grip strength and posture, in space environments. The study, conducted using the MARS artificial gravity device aboard the International Space Station's Kibo module, involved raising mice for one month under four distinct gravity conditions: microgravity (0G), Mars-like gravity (0.33G), intermediate gravity (0.67G), and Earth gravity (1G). Results indicated that even the gravity level of Mars (one-sixth of Earth's) is insufficient to prevent muscle weakening, particularly in the soleus muscle responsible for maintaining posture. This finding is critical for the Artemis project and future long-term human habitation on the Moon and Mars, highlighting the necessity of artificial gravity solutions to protect astronaut health. The research underscores that current natural gravity levels on these celestial bodies pose significant health risks, necessitating technological interventions to ensure physiological stability during extended missions.
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