The Sarcopenia Definitions and Outcomes Consortium, funded by the National Institute on Aging (NIA) and the Foundation for the National Institutes of Health (fNIH), is a project to develop diagnostic criteria for sarcopenia in both the clinical and research settings. The project builds upon the Sarcopenia 1 Project, which developed initial sarcopenia criteria for predicting physical disability and clinically meaningful outcomes to patients. This webinar provides the preliminary results of the Sarcopenia Definitions and Outcomes Consortium.