NASA conducts research on Earth and in space to solve the health challenges of extended human space flight. Research Summary: This study directly measures ISS crew members' VO2 max. It will also monitor the pattern of change. VO2 max is the maximum amount of oxygen the body can consume during physical activity, and is an indication of fitness. Description: Strenuous exercise, such as spacewalks, is difficult when a person's VO2 max decreases. During this study, the direct measurements will be compared to previously used estimation methods to learn more about oxygen consumption in space. Study results should allow better astronaut health monitoring by determining if more exercise is needed to maintain fitness levels. Time Frame: This ongoing research began on the ISS in March 2009. Earth Application: This study will provide valuable information for fitness evaluation on Earth. More information: Fact Sheet Download PowerPoint file
