Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion
| Autor: | Sylvie Cappelle, J. D. Rouillon, Laurent Mourot, Jacques Regnard, Jean-Pierre Wolf, Gilles Dumoulin, Emmanuel Gandelin, Malika Bouhaddi |
|---|---|
| Přispěvatelé: | 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 ), 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), 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]) |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Male
MESH: Body Temperature MESH: Cold Temperature MESH: Atrial Natriuretic Factor Hemodynamics MESH: Immersion MESH : Analysis of Variance MESH: Spectrum Analysis MESH: Arginine Vasopressin 030204 cardiovascular system & hematology Cardiovascular System Autonomic control MESH : Autonomic Nervous System Body Temperature MESH: Autonomic Nervous System 0302 clinical medicine Catecholamines MESH : Cardiography Impedance Immersion MESH : Catecholamines MESH : Hemodynamics MESH: Posture MESH : Adult Peripheral Cold Temperature MESH : Water Anesthesia Cardiology Atrial Natriuretic Factor Adult medicine.medical_specialty MESH: Hemodynamics MESH : Male Posture Baroreflex MESH: Cardiovascular Physiological Phenomena Autonomic Nervous System Cardiography Impedance Cardiovascular Physiological Phenomena 03 medical and health sciences MESH: Cardiography Impedance Internal medicine MESH: Analysis of Variance MESH : Cardiovascular System [ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathology Heart rate Immersion (virtual reality) medicine MESH: Water MESH: Catecholamines Humans MESH : Spectrum Analysis MESH : Body Temperature Analysis of Variance MESH: Humans business.industry MESH: Cardiovascular System MESH : Cardiovascular Physiological Phenomena Spectrum Analysis MESH : Humans MESH : Arginine Vasopressin Public Health Environmental and Occupational Health MESH : Posture Water MESH : Atrial Natriuretic Factor MESH: Adult 030229 sport sciences MESH: Male MESH : Cold Temperature Arginine Vasopressin Autonomic nervous system Blood pressure MESH : Immersion business [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology |
| Zdroj: | Aviation, Space, and Environmental Medicine Aviation, Space, and Environmental Medicine, Aerospace Medical Association, 2008, 79 (1), pp.14-20 |
| ISSN: | 0095-6562 |
| Popis: | International audience; BACKGROUND: Moderately cold head-out water immersion stimulates both baro- and cold-receptors, and triggers complex and contradictory effects on the cardiovascular system and its autonomic nervous control. OBJECTIVES: To assess the effects of water immersion and cold on cardiovascular status and related autonomic nervous activity. METHODS: Hemodynamic variables and indexes of autonomic nervous activity (analysis of heart rate and blood pressure variability) were evaluated in 12 healthy subjects during 3 exposures of 20 min each in the upright position, i.e., in air (AIR, 24-25 degrees C), and during head-out water immersion at 35-36 degrees C (WIn) and 26-27 degrees C (WIc). RESULTS: Plasma noradrenaline, systolic and diastolic blood pressure, and total peripheral resistances were reduced during WIn compared to AIR (263.9 +/- 39.4 vs. 492.5 +/- 35.7 pg x ml(-1), 116.5 +/- 3.7 and 65.4 +/- 1.7 mmHg vs. 140.8 +/- 4.7 and 89.8 +/- 2.8 mmHg, 14.1 +/- 1.0 vs. 16.3 +/- 0.9 mmHg x L(-1) x min, respectively) while they were increased during WIc (530.8 +/- 84.7 pg ml(-1), 148.0 +/- 7.0 mmHg, 80.8 +/- 3.0 mmHg, and 25.8 +/- 1.9 mmHg x L(-1) x min, respectively). The blood pressure variability was reduced to the same extent during WIc and Win compared to AIR. Heart rate decreased during WIn (67.8 +/- 2.7 vs. 81.2 +/- 2.7 bpm during AIR), in parallel with an increased cardiac parasympathetic activity. This pattern was strengthened during WIc (55.3 +/- 2.2 bpm). CONCLUSIONS: Thermoneutral WI lowered sympathetic activity and arterial tone, while moderate whole-body skin cooling triggered vascular sympathetic activation. Conversely, both WI and cold triggered cardiac parasympathetic activation, highlighting a complex autonomic control of the cardiovascular system. |
| Databáze: | OpenAIRE |
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