title: Sacrificing economy to improve running performance--a reality in the ultramarathon?
authors.affiliation: Université de Lyon, Saint-Etienne, France. guillaume.millet@univ-st-etienne.fr
authors.forename: G Y
authors.initials: GY
authors.lastname: Millet
authors.forename: M D
authors.initials: MD
authors.lastname: Hoffman
authors.forename: J B
authors.initials: JB
authors.lastname: Morin
mesh_terms: D054874:Athletic Performance / Q000502:physiology*; D004734:Energy Metabolism / Q000502:physiology; D006801:Humans; D035002:Lower Extremity / Q000502:physiology; D018763:Muscle Fatigue / Q000502:physiology; D012420:Running / Q000502:physiology*