RT Journal Article SR Electronic T1 The key to top-level endurance running performance: a unique example JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 172 OP 174 DO 10.1136/bjsm.2007.040725 VO 42 IS 3 A1 Alejandro Lucia A1 Jesús Oliván A1 Jerónimo Bravo A1 Marta Gonzalez-Freire A1 Carl Foster YR 2008 UL http://bjsm.bmj.com/content/42/3/172.abstract AB