Dr. Claire Berryman (IMAGE) Pennington Biomedical Research Center Caption The study originated from Dr. Claire Berryman’s previous research in which she investigated the health and performance of soldiers during training missions at high altitudes. Credit Eddy Perez/LSU Usage Restrictions None License Original 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.