A computational physiology approach to personalized treatment models: the beneficial effects of slow breathing on the human cardiovascular system
| Autor: | Bronya Vaschillo, Eun Young Mun, Vladimir A. Fonoberov, Adriana Mezić, Maria Fonoberova, Evgeny G. Vaschillo, Jennifer F. Buckman, Igor Mezic, Marsha E. Bates |
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| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Physiology medicine.medical_treatment Hemodynamics Baroreflex Biofeedback Breathing Exercises Young Adult Integrative Cardiovascular Physiology and Pathophysiology Physiology (medical) Internal medicine medicine Humans Heart rate variability Precision Medicine Vagal tone Feedback Physiological business.industry Models Cardiovascular Heart Blood flow Blood pressure Anesthesia Cardiology Breathing Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | American Journal of Physiology-Heart and Circulatory Physiology. 307:H1073-H1091 |
| ISSN: | 1522-1539 0363-6135 |
| DOI: | 10.1152/ajpheart.01011.2013 |
| Popis: | Heart rate variability biofeedback intervention involves slow breathing at a rate of ∼6 breaths/min (resonance breathing) to maximize respiratory and baroreflex effects on heart period oscillations. This intervention has wide-ranging clinical benefits and is gaining empirical support as an adjunct therapy for biobehavioral disorders, including asthma and depression. Yet, little is known about the system-level cardiovascular changes that occur during resonance breathing or the extent to which individuals differ in cardiovascular benefit. This study used a computational physiology approach to dynamically model the human cardiovascular system at rest and during resonance breathing. Noninvasive measurements of heart period, beat-to-beat systolic and diastolic blood pressure, and respiration period were obtained from 24 healthy young men and women. A model with respiration as input was parameterized to better understand how the cardiovascular processes that control variability in heart period and blood pressure change from rest to resonance breathing. The cost function used in model calibration corresponded to the difference between the experimental data and model outputs. A good match was observed between the data and model outputs (heart period, blood pressure, and corresponding power spectral densities). Significant improvements in several modeled cardiovascular functions (e.g., blood flow to internal organs, sensitivity of the sympathetic component of the baroreflex, ventricular elastance) were observed during resonance breathing. Individual differences in the magnitude and nature of these dynamic responses suggest that computational physiology may be clinically useful for tailoring heart rate variability biofeedback interventions for the needs of individual patients. |
| Databáze: | OpenAIRE |
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