Abstract:In brief: Two ultramarathon world-record holders were studied immediately after a 50-mile race and in a laboratory under controlled conditions. Blood samples were obtained before and after running and were analyzed for lactate, glucose, glycerol, and free fatty acid. Muscle biopsies were also performed and analyzed for glycogen, enzyme activity, and fiber type. Results showed that although these runners are fit their physiological data are not extreme or unique and are similar to data obtained from marathoners. Show more
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.