title: Reply: To PMID 23177293.
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Forman
authors.forename: Jerome L
authors.initials: JL
authors.lastname: Fleg
authors.forename: Dalane W
authors.initials: DW
authors.lastname: Kitzman
authors.forename: Vera
authors.initials: V
authors.lastname: Bittner
mesh_terms: D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods*; D005081:Exercise Therapy / Q000379:methods*; D005260:Female; D054143:Heart Failure, Systolic / Q000175:diagnosis*; D006801:Humans; D008297:Male; D010045:Outpatients; D016138:Walking / Q000502:physiology*