Even though muscle mass and strength can be regained once astronauts have returned to Earth, maintaining muscle in space is a concern, especially for long-duration space missions.
The Biopsy researchers take calf muscle biopsies of crew members before and after their stay aboard the International Space Station (ISS). This allows scientists to begin developing an in-space countermeasure exercise program aimed at keeping muscles at their peak performance during long missions in space.<span> </span>
