[The study of heart rhythm variability during stress testing].
Individual heart rhythm variability is determined on the basis of mathematical models of changeability of cardiointervals during stress and function of their distribution. We has revealed its dependence on tolerability to physical effort (degree of training, endurance). We also established diagnostic and prognostic value of extremums of distribution of lengths of intervals between cardiocycles (duration of R-R intervals).
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D000293:Adolescent; D004562:Electrocardiography; D005080:Exercise Test / Q000379:methods*; D017079:Exercise Tolerance / Q000502:physiology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D012016:Reference Values; D015203:Reproducibility of Results; D055815:Young Adult