Why the study?
It remained uncertain whether Holter monitoring ECG heart rate variability data could be used to identify a stable daily pattern reflecting the non-modifiable individual state of cardiac reactivity.
Heart rate variability exhibits a stable individual pattern over a 4-year period in healthy young men, alongside a gradual decrease in total HRV power independent of autonomic balance changes.
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Hypothesis-generating for stable HRV patterns in cardiac reactivity assessment; prospective validation required before clinical use.
Novikov et al. (2025) studied this question.
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