Villareal with Exercisers (IMAGE) Washington University School of Medicine Caption Senior exercisers speak with Dennis T. Villareal, MD, while participating in a study to find effective ways to boost physical function and reduce frailty in the elderly. Both were obese when the study began but lost weight through a combination of diet and exercise. Credit Joe Angeles 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.