title: Suggested new upper limit of physiologic cardiac hypertrophy determined in Japanese ultramarathon runners must be interpreted cautiously.
authors.forename: Jürgen
authors.initials: J
authors.lastname: Scharhag
authors.forename: Axel
authors.initials: A
authors.lastname: Urhausen
authors.forename: Wilfried
authors.initials: W
authors.lastname: Kindermann
mesh_terms: D000222:Adaptation, Physiological; D000328:Adult; D000368:Aged; D001830:Body Surface Area; D004452:Echocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D017379:Hypertrophy, Left Ventricular / Q000175:diagnosis* / Q000503:physiopathology; D008875:Middle Aged; D012420:Running / Q000502:physiology*