Measuring Maximum Oxygen Uptake (IMAGE) Norwegian University of Science and Technology Caption Researchers use a treadmill and a special mask to measure a person's maximum oxygen uptake, which is considered an important measure of fitness. Credit Geir Mogen/NTNU Usage Restrictions with proper credit and only in association with articles about this research License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.