Astronaut Muscles Waste In Space Marquette University

Astronaut muscles waste away on long space flights and their ability to do physical work is reduced by more than 40% according to research by Marquette University professor Robert Fitts.
This is the equivalent of a 30- to 50-year-old crew member’s muscles deteriorating to that of an 80-year-old. The destructive effects of extended weightlessness to skeletal muscle – despite in-flight exercise – pose a significant safety risk for future manned missions to Mars and elsewhere in the Universe.
The study was recently published online by The Journal of Physiology and will be in the September printed issue. It comes at a time of renewed interest in Mars and increased evidence of early life on the planet. NASA currently estimates it would take a crew 10 months to reach Mars, with a 1 year stay, or a total mission of approximately 3 years.