Heart rate variability is dependent on the level of heart rate.
Nieminen
Tuomo
T
Kähönen
Mika
M
Kööbi
Tiit
T
Nikus
Kjell
K
Viik
Jari
J
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