Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion

Laurent Mourot, Malika Bouhaddi, Emmanuel Gandelin, Sylvie Cappelle, Gilles Dumoulin, Jean Pierre Wolf, Jean Denis Rouillon, Jacques Regnard

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

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°C), and during head-out water immersion at 35-36°C (WIn) and 26-27°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·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·L-1·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·L-1·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.

Original languageEnglish
Pages (from-to)14-20
Number of pages7
JournalAviation Space and Environmental Medicine
Volume79
Issue number1
DOIs
Publication statusPublished - 1 Jan 2008
Externally publishedYes

Fingerprint

Immersion
Head
Blood Pressure
Cardiovascular System
Water
Heart Rate
Vascular Resistance
Blood Vessels
Norepinephrine
Healthy Volunteers
Hemodynamics
Air
Skin

Keywords

  • Autonomic nervous system
  • Baroreflex
  • Blood pressure
  • Cold
  • Head-out water immersion
  • Heart rate
  • Spectral analysis

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this

Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion. / Mourot, Laurent; Bouhaddi, Malika; Gandelin, Emmanuel; Cappelle, Sylvie; Dumoulin, Gilles; Wolf, Jean Pierre; Rouillon, Jean Denis; Regnard, Jacques.

In: Aviation Space and Environmental Medicine, Vol. 79, No. 1, 01.01.2008, p. 14-20.

Research output: Contribution to journalArticle

Mourot, L, Bouhaddi, M, Gandelin, E, Cappelle, S, Dumoulin, G, Wolf, JP, Rouillon, JD & Regnard, J 2008, 'Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion', Aviation Space and Environmental Medicine, vol. 79, no. 1, pp. 14-20. https://doi.org/10.3357/ASEM.2147.2008
Mourot, Laurent ; Bouhaddi, Malika ; Gandelin, Emmanuel ; Cappelle, Sylvie ; Dumoulin, Gilles ; Wolf, Jean Pierre ; Rouillon, Jean Denis ; Regnard, Jacques. / Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion. In: Aviation Space and Environmental Medicine. 2008 ; Vol. 79, No. 1. pp. 14-20.
@article{adbc9ae0b1a141aca390516893c0155b,
title = "Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion",
abstract = "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°C), and during head-out water immersion at 35-36°C (WIn) and 26-27°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·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·L-1·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·L-1·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.",
keywords = "Autonomic nervous system, Baroreflex, Blood pressure, Cold, Head-out water immersion, Heart rate, Spectral analysis",
author = "Laurent Mourot and Malika Bouhaddi and Emmanuel Gandelin and Sylvie Cappelle and Gilles Dumoulin and Wolf, {Jean Pierre} and Rouillon, {Jean Denis} and Jacques Regnard",
year = "2008",
month = "1",
day = "1",
doi = "10.3357/ASEM.2147.2008",
language = "English",
volume = "79",
pages = "14--20",
journal = "Aerospace medicine and human performance",
issn = "2375-6314",
publisher = "Aerospace Medical Association",
number = "1",

}

TY - JOUR

T1 - Cardiovascular autonomic control during short-term thermoneutral and cool head-out immersion

AU - Mourot, Laurent

AU - Bouhaddi, Malika

AU - Gandelin, Emmanuel

AU - Cappelle, Sylvie

AU - Dumoulin, Gilles

AU - Wolf, Jean Pierre

AU - Rouillon, Jean Denis

AU - Regnard, Jacques

PY - 2008/1/1

Y1 - 2008/1/1

N2 - 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°C), and during head-out water immersion at 35-36°C (WIn) and 26-27°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·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·L-1·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·L-1·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.

AB - 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°C), and during head-out water immersion at 35-36°C (WIn) and 26-27°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·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·L-1·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·L-1·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.

KW - Autonomic nervous system

KW - Baroreflex

KW - Blood pressure

KW - Cold

KW - Head-out water immersion

KW - Heart rate

KW - Spectral analysis

UR - http://www.scopus.com/inward/record.url?scp=37749035878&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=37749035878&partnerID=8YFLogxK

U2 - 10.3357/ASEM.2147.2008

DO - 10.3357/ASEM.2147.2008

M3 - Article

VL - 79

SP - 14

EP - 20

JO - Aerospace medicine and human performance

JF - Aerospace medicine and human performance

SN - 2375-6314

IS - 1

ER -