Kathleen Janz, University of Iowa (IMAGE) University of Iowa Caption Kathleen Janz, University of Iowa professor of health and sport studies, presented data from this study at an American College of Sports Medicine conference. Credit Photo courtesy of University of Iowa Usage Restrictions None 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.