Heart Rate Variability at Rest Predicts Heart Response to Simulated Diving

A characteristic feature of the cardiac response to diving is the uncertainty in predicting individual course. The aim of the study was to determine whether resting regulatory heart rate determinants assessed before diving may be predictors of cardiac response in a simulated diving test. The researc...

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Bibliographic Details
Published in:Biology (Basel, Switzerland) Switzerland), 2023-01, Vol.12 (1), p.125
Main Authors: Malinowski, Krzysztof S, Wierzba, Tomasz H, Neary, J Patrick, Winklewski, Paweł J, Wszędybył-Winklewska, Magdalena
Format: Article
Language:English
Subjects:
Apnea
Autonomic nervous system
Blood pressure
Cardiovascular disease
Cardiovascular system
Diving
Electrocardiography
healthy individuals
Heart rate
heart rate variability
Hypertension
Hypoxia
Influence
Nervous system
Oscillations
Parasympathetic nervous system
Questionnaires
simulated diving test
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Summary:A characteristic feature of the cardiac response to diving is the uncertainty in predicting individual course. The aim of the study was to determine whether resting regulatory heart rate determinants assessed before diving may be predictors of cardiac response in a simulated diving test. The research was conducted with 65 healthy volunteers (37 women and 28 men) with an average age of 21.13 years (20-27 years) and a BMI of 21.49 kg/m (16.60-28.98). The simulated diving test consisted of stopping breathing after maximum inhaling and voluntarily immersing the face in water (8-10 °C) for as long as possible. The measurements included heart rate variability (HRV) analysis before diving and determination of the course of the cardiac response to diving-minimum and maximum heart rate (HR). The results indicate that minimum HR during diving (MIN_div) is dependent on the short-term HRV measures, which proves the strong influence of the parasympathetic system on the MIN_div. The lack of dependence of MIN_div on short-term HRV in women may be associated with differences in neurogenic HR regulation in women and men. In conclusion, cardiac response to simulated diving is strictly dependent on the autonomic regulation of the heart rhythm under resting conditions. The course of the cardiac response to diving and its relationship with resting HRV appears to be gender dependent.
ISSN:2079-7737
2079-7737
DOI:10.3390/biology12010125