Dynamical analysis of heart rate variability can help distinguish healthy individuals from patients, despite challenges in proving chaotic dynamics.
May support dynamical HR analysis for discrimination; leaves open prospective validation before any clinical use.
Providing a conclusive answer to the question "is this dynamics chaotic?" remains very challenging when experimental data are investigated. We showed that such a task is actually a difficult problem in the case of heart rates. Nevertheless, an appropriate dynamical analysis can discriminate healthy subjects from patients.
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Freitas et al. (2009) studied this question.
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