Cardiovascular Fitness
Cardiovascular fitness refers to the ability of the heart, lungs, and circulatory system to supply oxygen and nutrients to the muscles during physical activity. In the context of space and astronautical engineering, cardiovascular fitness is crucial for astronauts to maintain during long-duration space missions. Prolonged exposure to microgravity can cause a decrease in cardiovascular fitness, leading to muscle atrophy and a decrease in bone density. To combat this, astronauts must engage in regular exercise programs that include both aerobic and resistance training. Additionally, cardiovascular fitness is important for the design of spacesuits and spacecraft, as it affects the amount of oxygen and carbon dioxide that can be exchanged between the astronaut and their environment.
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