Running speed, energy cost of uphill running and overall energy expenditure during the Etna Marathon race (0 - 3000 m a.s.l.): a case report - Antonutto, G.; Messina, G.; Zadro, I. (International Congress Mountain & Sport. Updating study and research from laboratory to field. 11th-12th November 2005. Rovereto (TN) - Italy. Programme and book of abstracts, 2005)