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2 results on '"MESH : Diving"'

1. Military Diving Training Improved Arterial Compliance

Author

Yoann Gole, Pierre Fontanari, Laurent Mourot, Jacques Regnard, Pierre Louge, Alain Boussuges, Laboratoire Motricité Humaine Expertise Sport Santé ( LAMHESS ), Université Nice Sophia Antipolis ( UNS ), Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Université de Toulon ( UTLN ), Hôpital Jean Minjoz, Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ), Institut de Médecine Navale du Service de Santé des Armées ( IMNSSA ), Service de Santé des Armées, Amélioration génétique et adaptation des plantes méditerranéennes et tropicales ( UMR AGAP ), Institut national de la recherche agronomique [Montpellier] ( INRA Montpellier ) -Centre international d'études supérieures en sciences agronomiques ( Montpellier SupAgro ) -Centre de Coopération Internationale en Recherche Agronomique pour le Développement ( CIRAD ) -Institut national d’études supérieures agronomiques de Montpellier ( Montpellier SupAgro ), Marqueurs pronostiques et facteurs de régulations des pathologies cardiaques et vasculaires - UFC ( PCVP / CARDIO ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ) -Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ), Centre d'Investigation Clinique de Besançon ( CICB ), Etablissement Français du Sang Bourgogne Franche-Comté-Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Franche-Comté ( UFC ), Laboratoire Motricité Humaine Expertise Sport Santé (LAMHESS), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université de Toulon (UTLN)-Université Côte d'Azur (UCA), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Institut de Médecine Navale du Service de Santé des Armées (IMNSSA), Amélioration génétique et adaptation des plantes méditerranéennes et tropicales (UMR AGAP), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Architecture et Fonctionnement des Espèces Fruitières [AGAP] (AFEF), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Université de Toulon (UTLN), Centre Hospitalier Régional Universitaire [Besançon] (CHRU Besançon), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro), Marqueurs pronostiques et facteurs de régulations des pathologies cardiaques et vasculaires - UFC ( EA 3920) (PCVP / CARDIO), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC), Centre d'Investigation Clinique de Besançon (Inserm CIC 1431), Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Etablissement français du sang [Bourgogne-Franche-Comté] (EFS [Bourgogne-Franche-Comté])

Subjects
Male, Brachial Artery, MESH: Cold Temperature, Diving, Blood Pressure, 030204 cardiovascular system & hematology, MESH: Stroke Volume, 0302 clinical medicine, Heart Rate, MESH : Stroke Volume, Medicine, Orthopedics and Sports Medicine, MESH: Oxygen Consumption, Brachial artery, MESH: Heart Rate, MESH : Oxygen Consumption, ComputingMilieux_MISCELLANEOUS, Ultrasonography, [ SDV.MHEP.PHY ] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], MESH: Diving, Cold pressor test, MESH : Brachial Artery, cold pressor test, Stroke volume, MESH: Blood Pressure, MESH : Adult, Pulse pressure, Scuba diving, MESH: Pulse, Cold Temperature, Military Personnel, MESH: Young Adult, Cardiology, MESH: Vasoconstriction, MESH : Vasoconstriction, Adult, medicine.medical_specialty, MESH : Male, Diastole, MESH : Young Adult, Physical Therapy, Sports Therapy and Rehabilitation, Young Adult, 03 medical and health sciences, Oxygen Consumption, Internal medicine, medicine.artery, MESH : Pulse, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, Heart rate, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], MESH : Blood Pressure, Humans, MESH : Diving, MESH: Brachial Artery, Pulse, MESH: Humans, business.industry, MESH : Heart Rate, MESH : Humans, autonomic nervous system, echography, Stroke Volume, MESH: Adult, cold, MESH: Male, Surgery, MESH : Cold Temperature, Blood pressure, MESH: Military Personnel, Vasoconstriction, cardiovascular system, MESH : Military Personnel, business, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

International audience; This study was aimed at investigating whether repeated SCUBA diving might induce long term cardiovascular and autonomic modifications. In 11 military mine clearance diving students, arterial compliance (ultrasound scan study of brachial artery and ratio of stroke volume to pulse pressure: SV/PP), resting spectral analyses of heart rate and blood pressure variability, and a cold pressor test were performed before and after a 15-week military diving training course. After the diving training, arterial compliance was improved, as indicated by the significant increase in brachial arterial compliance (from 24+/-10 to 37+/-14 ml.mmHg (-1)) and SV/PP (from 1.7+/-0.2 to 1.9+/-0.2 ml.mmHg (-1)), and by the significant decrease in systolic, diastolic and pulse pressures (from 130+/-8 to 120+/-7; from 71+/-4 to 67+/-4; and from 58+/-8 to 53+/-5 mmHg, respectively). The peak oxygen uptake increased significantly from 54.3+/-2.0 to 56.8+/-4.0 mL.kg (-1).min (-1). Finally, the vasoconstrictive response during the cold pressor test increased (p

Published
2009
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2. Cardiovascular changes induced by cold water immersion during hyperbaric hyperoxic exposure

Author

Jacques Regnard, Aliocha Grandfond, Claude Robinet, François Galland, Alain Boussuges, Jean-Pierre Wolf, F. Molenat, Institut de Médecine Navale du Service de Santé des Armées ( IMNSSA ), Service de Santé des Armées, Laboratoire de Recherche EA 3280 - Physiopathologie et action thérapeutique des gaz sous pression, Faculté de Médecine Nord, Marqueurs pronostiques et facteurs de régulations des pathologies cardiaques et vasculaires - UFC ( PCVP / CARDIO ), Université Bourgogne Franche-Comté ( UBFC ) -Université de Franche-Comté ( UFC ) -Centre Hospitalier Régional Universitaire [Besançon] ( CHRU Besançon ), Institut de Médecine Navale du Service de Santé des Armées (IMNSSA), Marqueurs pronostiques et facteurs de régulations des pathologies cardiaques et vasculaires - UFC ( EA 3920) (PCVP / CARDIO), Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon)-Université de Franche-Comté (UFC), and Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC)

Subjects
Male, Cardiac output, Time Factors, MESH: Blood Volume, Physiology, MESH: Myocardial Contraction, Diving, Hydrostatic pressure, MESH: Immersion, Blood volume, Blood Pressure, 030204 cardiovascular system & hematology, Doppler echocardiography, MESH : Hyperbaric Oxygenation, Cardiovascular System, MESH: Stroke Volume, Ventricular Function, Left, MESH: Ventricular Function, Left, 0302 clinical medicine, Heart Rate, Immersion, MESH : Echocardiography, Doppler, Pulsed, MESH : Stroke Volume, Medicine, MESH : Compliance, MESH: Hyperbaric Oxygenation, Cardiac Output, MESH: Heart Rate, MESH : Myocardial Contraction, Hyperbaric Oxygenation, MESH : Blood Volume, Blood Volume, medicine.diagnostic_test, MESH: Diving, MESH: Compliance, MESH : Cold, General Medicine, Stroke volume, Arteries, MESH: Blood Pressure, MESH : Adult, Cold Temperature, MESH: Echocardiography, Doppler, Pulsed, MESH : Water, Anesthesia, MESH : Hyperoxia, Compliance, MESH : Time Factors, Cardiac function curve, Adult, MESH : Ventricular Function, Left, MESH: Cold, MESH : Male, Hyperoxia, 03 medical and health sciences, MESH: Hyperoxia, Physiology (medical), MESH : Cardiac Output, MESH : Cardiovascular System, [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology, Heart rate, MESH: Water, MESH : Blood Pressure, Humans, MESH : Diving, MESH: Arteries, Echocardiography, Doppler, Pulsed, MESH: Humans, business.industry, MESH: Cardiovascular System, MESH : Heart Rate, MESH: Time Factors, MESH: Cardiac Output, MESH : Humans, Water, Stroke Volume, MESH: Adult, 030229 sport sciences, Myocardial Contraction, MESH: Male, MESH : Arteries, Blood pressure, MESH : Immersion, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract

The present study was designed to assess the cardiac changes induced by cold water immersion compared with dry conditions during a prolonged hyperbaric and hyperoxic exposure (ambient pressure between 1.6 and 3 ATA and PiO(2) between 1.2 and 2.8 ATA). Ten healthy volunteers were studied during a 6 h compression in a hyperbaric chamber with immersion up to the neck in cold water while wearing wet suits. Results were compared with measurements obtained in dry conditions. Echocardiography and Doppler examinations were performed after 15 min and 5 h. Stroke volume, left atrial and left ventricular (LV) diameters remained unchanged during immersion, whereas they significantly fell during the dry session. As an index of LV contractility, percentage fractional shortening remained unchanged, in contrast to a decrease during dry experiment. Heart rate (HR) significantly decreased after 5 h, although it had not changed during the dry session. The changes in the total arterial compliance were similar during the immersed and dry sessions, with a significant decrease after 5 h. In immersed and dry conditions, cardiac output was unchanged after 15 min but decreased by almost 20% after 5 h. This decrease was related to a decrease in HR during immersion and to a decrease in stroke volume in dry conditions. The hydrostatic pressure exerted by water immersion on the systemic vessels could explain these differences. Indeed, the redistribution of blood volume towards the compliant thoracic bed may conceal a part of hypovolaemia that developed in the course of the session.

Published
2007
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