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Popowski LA, Oppliger RA, Patrick Lambert G, Johnson RF, Kim Johnson A, Gisolf CV.Popowski LA, et al. Among authors: oppliger ra.Med Sci Sports Exerc. 2001 May;33(5):747-53. doi: 10.1097/00005768-200105000-00011.Med Sci Sports Exerc. 2001.PMID: 11323543