title: Heart rate variability is dependent on the level of heart rate.
authors.forename: Tuomo
authors.initials: T
authors.lastname: Nieminen
authors.forename: Mika
authors.initials: M
authors.lastname: Kähönen
authors.forename: Tiit
authors.initials: T
authors.lastname: Kööbi
authors.forename: Kjell
authors.initials: K
authors.lastname: Nikus
authors.forename: Jari
authors.initials: J
authors.lastname: Viik
mesh_terms: D000368:Aged; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006331:Heart Diseases / Q000401:mortality / Q000503:physiopathology; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D015996:Survival Rate