title: The state of exercise training: a need for action.
authors.forename: David J
authors.initials: DJ
authors.lastname: Whellan
authors.forename: Christopher M
authors.initials: CM
authors.lastname: O'Connor
mesh_terms: D005081:Exercise Therapy; D005500:Follow-Up Studies; D006333:Heart Failure / Q000534:rehabilitation*; D006801:Humans; D016896:Treatment Outcome