Study Finds Two-Thirds of Earth's Gravity Needed for Muscle Health on Moon and Mars
A research team led by 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 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 one-third gravity found on Mars is insufficient to prevent muscle weakening, particularly in the soleus muscle. This finding is critical for the upcoming Artemis project and future long-term human habitation on the Moon and Mars, where lower gravity poses significant health risks. The research highlights the necessity of developing countermeasures, such as artificial gravity systems, to protect astronaut health during extended missions. As space exploration becomes more concrete, understanding these physiological thresholds is vital for ensuring the safety and well-being of humans living in low-gravity environments beyond Earth.
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Study Finds Two-Thirds of Earth's Gravity Needed for Muscle Health on Moon and Mars
A research team led by 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 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 one-third gravity found on Mars is insufficient to prevent muscle weakening, particularly in the soleus muscle. This finding is critical for the upcoming Artemis project and future long-term human habitation on the Moon and Mars, where lower gravity poses significant health risks. The research highlights the necessity of developing countermeasures, such as artificial gravity systems, to protect astronaut health during extended missions. As space exploration becomes more concrete, understanding these physiological thresholds is vital for ensuring the safety and well-being of humans living in low-gravity environments beyond Earth.
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