Measuring Ground Force and Bone Load (IMAGE) Vanderbilt University Caption Graduate student Emily Matijevich, pictured at the computer, performed the lab work the study outlines, testing 10 runners over a range of speeds and slopes. Credit Susan Urmy/Vanderbilt University 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.