article 2009 14 pages Metabolic stress-like condition can be induced by prolonged strenuous exercise in athletes STEFAN BRANTH, LEIF HAMBRAEUS, KARIN PIEHL-AULIN, BIRGITTA ESSÉN-GUSTAVSSON, TORBJÖRN ÅKERFELDT, ROGER OLSSON, MATS STRIDSBERG, GUNNAR RONQUIST JournalUpsala Journal of Medical SciencesDOI10.1080/03009730802579778Publication typeOriginal ArticlesPopulationendurance-trained athletes View on DOI ↗