Punching Power Experiment (IMAGE) University of Utah Caption Coauthor Jenna Link prepares the hand crank for measuring a volunteer's power in a punching motion. Credit Photo by Jeremy Morris Usage Restrictions Credit Jeremy Morris. 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.