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Hyperbaric Effects on Heart Rate in Professional SCUBA Divers in Thermal Water

Authors

  • Cristian Ieno Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Italy
  • Angelo Rodio Department of Human Sciences, Society and Health University of Cassino and Southern Lazio, Cassino, Italy
  • Enrico Marchetti INAIL, Department of Occupational Medicine, Epidemiology and Hygiene, Monte Porzio Catone, Rome Italy
  • Giovanna Tranfo INAIL, Department of Occupational Medicine, Epidemiology and Hygiene, Monte Porzio Catone, Rome Italy
  • Daniela Pigini INAIL, Department of Occupational Medicine, Epidemiology and Hygiene, Monte Porzio Catone, Rome Italy
  • Daniele Scenna Experimental Medicine Department, Medical Pathophysiology, Food Science and Endocrinology Section, Food Science, Sapienza University of Rome, Italy
  • Alessandro Pinto Experimental Medicine Department, Medical Pathophysiology, Food Science and Endocrinology Section, Food Science, Sapienza University of Rome, Italy
  • Luigi Fattorini Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Italy

DOI:

https://doi.org/10.23749/mdl.v114i2.13473

Keywords:

Bradycardia, Dive response, Thermoregulation, Diving physiology, Organ perfusion, Venous return

Abstract

Background: Diving in SCUBA modality modifies human physiology in many ways. These modifications have been studied since Paul Bert work in 1878. This area of research is very sensible to technological development. Actually, it is possible to record heart rate (HR) continuously while diving. The study of HR change in SCUBA diving is the objective of the present paper. Methods: HR has been recorded in 11 subjects while SCUBA diving in thermal water at constant temperature of 34 °C in the deepest Italian pool at Montegrotto (Padova, Italy). Three depths were investigated: -20, -30 and -40 metres. The HR has been recorded with a Galileo SOL diving computer. Dive was subdivided in three phases: descent (DSC), steady on depth (STD), post dive (RSF). HR was averaged from the values of each temporal phase. Moreover, from HR regression in DSC and STD, HR slope and intercept were assessed. Results: Intercept and slope decrease with depth for all three depths for the descent and steady on depth phases with different rate. A significant difference was found between the slope during STD between -20 and -40 m (p < 0.05). Conclusions: Present results emphasized two different HR physiological adjustments. Firstly, during the DSC a rapid HR decrease is recognised, secondly, at STD, the blood redistribution requires another physiological adjustment. This latter is depth dependent because cardiac dynamic. Present data highlighted the important cardiovascular stress need to counteract the diving activity.

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Author Biography

Enrico Marchetti, INAIL, Department of Occupational Medicine, Epidemiology and Hygiene, Monte Porzio Catone, Rome Italy

Laureato in fisica e specializzaqto in fisica sanitaria.

Ricercatore presso il Dipartimento di medicina, epidemiologia ed igiene del lavoro ed ambientale, Laboratorio Agenti Fisici.

Effettua ricerca in materia di  esposizione umana a vibrazioni meccabniche.

Esercita la radioprotezione (esperto qualifcato) per enti pubblici e privati.

References

Craig AB. Comparison of exercise in air and in water of different temperatures. Med Sci Sport Exerc. 1969;1:124–30.

Carlston, C. B., Mathias, R. A., & Shilling CW. The physician’s guide to diving medicine. Springer Science & Business Media, editor. 2012.

Claudine Schaller, Andrea Fümm, Simon Bachmann, Luca Oechslin, Yoshi Nakahara, Roger Melliger, Patric Biaggi CAW. Heart rate profiles and heart rate variability during scuba diving. Swiss Med Wkly [Internet]. 2021 Oct 11;151(41–42). Available from: https://smw.ch/article/doi/SMW.2021.w30039

Lindholm P, Lundgren CEG. Alveolar gas composition before and after maximal breath-holds in competitive divers. Undersea Hyperb Med [Internet]. 2006;33(6):463–7. Available from: http://www.ncbi.nlm.nih.gov/pubmed/17274316

Irving L, Scholander PF, Grinnell SW. The regulation of arterial blood pressure in the seal during diving. Am J Physiol Content [Internet]. 1942 Jan 31;135(3):557–66. Available from: https://www.physiology.org/doi/10.1152/ajplegacy.1942.135.3.557

Bosco G, De Marzi E, Michieli P, Omar HR, Camporesi EM, Padulo J, et al. 12-lead Holter monitor-ing in diving and water sports: a preliminary investigation. Diving Hyperb Med [Internet]. 2014 Dec;44(4):202–7. Available from: http://www.ncbi.nlm.nih.gov/pubmed/25596833

Vega JL. Edmund Goodwyn and the first description of diving bradycardia. J Appl Physiol [Internet]. 2017 Aug 1;123(2):275–7. Available from: https://www.physiology.org/doi/10.1152/japplphysiol.00221.2017

Hong SK, Moore TO, Seto G, Park HK, Hiatt WR, Bernauer EM. Lung volumes and apneic bradycar-dia in divers. J Appl Physiol [Internet]. 1970 Aug 1;29(2):172–6. Available from: https://www.physiology.org/doi/10.1152/jappl.1970.29.2.172

Pretorius T, Cahill F, Kocay S, Giesbrecht GG. Shivering Heat Production and Core Cooling During Head-In and Head-Out Immersion in 17°C Water. Aviat Space Environ Med [Internet]. 2008 May 1;79(5):495–9. Available from: http://openurl.ingenta.com/content/xref?genre=article&issn=0095-6562&volume=79&issue=5&spage=495

Caputa M, Cabanac M. Bradycardia during face cooling in man may be produced by selective brain cooling. J Appl Physiol [Internet]. 1979 May 1;46(5):905–7. Available from: https://www.physiology.org/doi/10.1152/jappl.1979.46.5.905

Hesser, C. M., Fagraeus, L., & Linnarsson D. Cardiorespiratory responses to exercise in hyperbaric environment. Stockholm: Laboratory of Aviation and Naval Medicine., editor. 1968.

Flynn, E. T., Berghage, T. E., & Coil EF. Influence of Increased Ambient Pressure and Gas Density on Cardiac Rate in Man. 1972.

Doubt TJ, Hogan PM. Effects of hydrostatic pressure on conduction and excitability in rabbit atria. J Appl Physiol [Internet]. 1978 Jul 1;45(1):24–32. Available from: https://www.physiology.org/doi/10.1152/jappl.1978.45.1.24

Lundgren CE, Ornhagen HC. Heart rate and respiratory frequency in hydrostatically compressed, liq-uid-breathing mice. Undersea Biomed Res [Internet]. 1976 Dec;3(4):303–20. Available from: http://www.ncbi.nlm.nih.gov/pubmed/10897858

Demchenko IT, Zhilyaev SY, Moskvin AN, Krivchenko AI, Piantadosi CA, Allen BW. Barore-flex-mediated cardiovascular responses to hyperbaric oxygen. J Appl Physiol [Internet]. 2013 Sep 15;115(6):819–28. Available from: https://www.physiology.org/doi/10.1152/japplphysiol.00625.2013

Boussuges A, Molenat F, Grandfond A, Regnard J, Wolf J-P, Galland F, et al. Cardiovascular changes induced by cold water immersion during hyperbaric hyperoxic exposure. Clin Physiol Funct Imaging [Internet]. 2007 Sep;27(5):268–74. Available from: https://onlinelibrary.wiley.com/doi/10.1111/j.1475-097X.2007.00747.x

Aquilano K, Baccolo TP, Bersani AM, Bordi M, Buonaurio F, Businaro R, et al. Hyperbaric Exposure and Oxidative Stress in occupational activities (HEOxS): the study protocol. Senses Sci [Internet]. 2021;8(1):1212–29. Available from: https://sensesandsciences.com/index.php/Senses/article/view/213

Lohman GT, Roche AF MR. Reference Manual for Anthropometric Standardization. 1st ed. Battistini, N.C., Bedogni, G.M. E, editor. Edra Milan, Italy; 1992.

Mulasi U, Kuchnia AJ, Cole AJ, Earthman CP. Bioimpedance at the bedside: current applications, limitations, and opportunities. Nutr Clin Pract [Internet]. 2015 Apr;30(2):180–93. Available from: http://www.ncbi.nlm.nih.gov/pubmed/25613832

Piccoli, A.; Rossi, B.; Pillon, L.; Bucciante G. A new method for monitoring body fluid variation by bioimpedance analysis: the RXc graph. Kidney Int. 1994;46(2):534–539.

NLM classification: QU 100, editor. Report of a WHO Expert Consultation: Waist Circumference and Waist–Hip Ratio. Geneva, 8–11 December 2008;

Di Vincenzo O, Marra M, Di Gregorio A, Pasanisi F, Scalfi L. Bioelectrical impedance analysis (BIA) -derived phase angle in sarcopenia: A systematic review. Clin Nutr [Internet]. 2021;40(5):3052–61. Available from: http://www.ncbi.nlm.nih.gov/pubmed/33183880

Tranfo G, Marchetti E, Pigini D, Miccheli A, Spagnoli M, Sciubba F, et al. Targeted and untargeted metabolomics applied to occupational exposure to hyperbaric atmosphere. Toxicol Lett [Internet]. 2020 Aug 4;328(5):28–34. Available from: https://www.mdpi.com/1660-4601/19/5/3005

Marchetti E, Pigini D, Spagnoli M, Tranfo G, Buonaurio F, Sciubba F, et al. Hyperbaric Exposure of Scuba Divers Affects the Urinary Excretion of Nucleic Acid Oxidation Products and Hypoxanthine. Int J Environ Res Public Health [Internet]. 2022 Mar 4;19(5):3005. Available from: https://www.mdpi.com/1660-4601/19/5/3005

Winkler BE, Tetzlaff K, Muth C-M, Paulat K, Hebestreit H. Scuba-Dive-Related Changes in Heart Rate in Children. Pediatr Exerc Sci [Internet]. 2011 Aug;23(3):388–98. Available from: https://journals.humankinetics.com/view/journals/pes/23/3/article-p388.xml

Flouris AD, Scott JM. Heart rate variability responses to a psychologically challenging scuba dive. J Sports Med Phys Fitness [Internet]. 2009 Dec;49(4):382–6. Available from: http://www.ncbi.nlm.nih.gov/pubmed/20087297

Bennett and Elliotts, editor. Physiology and Medicine of Diving. 5th ed. 2002.

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Issue

Vol. 114 No. 2 (2023)

Section

Original articles

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