Measuring Energy Use in Judo (IMAGE) The Journal of Visualized Experiments Caption An athlete wears a portable gas analyzer during a judo match. Credit © <i>Journal of Visualized Experiments</i> Usage Restrictions Image may only be used with appropriate caption and credit. 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.