Dehydration does not influence cardiovascular reactivity to behavioural stress in young healthy humans.
Identifieur interne : 000274 ( Ncbi/Merge ); précédent : 000273; suivant : 000275Dehydration does not influence cardiovascular reactivity to behavioural stress in young healthy humans.
Auteurs : Lars Schwabe [Allemagne] ; Gabor Szinnai ; Ulrich Keller ; Hartmut SchachingerSource :
- Clinical physiology and functional imaging [ 1475-0961 ] ; 2007.
English descriptors
- KwdEn :
- Adult, Blood Pressure, Cardiovascular System (innervation), Cardiovascular System (physiopathology), Choice Behavior, Cognition, Dehydration (complications), Dehydration (physiopathology), Dehydration (psychology), Female, Heart Rate, Humans, Male, Parasympathetic Nervous System (physiopathology), Reaction Time, Sex Factors, Stress, Psychological (complications), Stress, Psychological (physiopathology), Water Deprivation.
- MESH :
- complications : Dehydration, Stress, Psychological.
- innervation : Cardiovascular System.
- physiopathology : Cardiovascular System, Dehydration, Parasympathetic Nervous System, Stress, Psychological.
- psychology : Dehydration.
- Adult, Blood Pressure, Choice Behavior, Cognition, Female, Heart Rate, Humans, Male, Reaction Time, Sex Factors, Water Deprivation.
Abstract
Enhanced hydration increases the human cardiovascular reactivity to mental stress. If reduced water intake has the opposite effect, this would suggest controlling for water deprivation when studying such responses. Blood pressure, heart rate and parasympathetically dominated beat-to-beat heart rate fluctuations were assessed during resting baseline and mental stress. Two challenging cognitive-motor tasks, a 5-Choice Reaction Time Task (CRTT) and a Paced Auditory Serial Addition Task (PASAT), served as mental stress tests. Eight female and eight male volunteers were examined twice, after 24 h of water deprivation and after normal water intake (counterbalanced order, 7-day interval). Water deprivation resulted in moderate dehydration with a mean 2.6% decrease of total body weight. Dehydration did neither affect baseline blood pressure, heart rate, nor blood pressure reactivity to mental stress. However, dehydration slightly (-1.2 bpm) diminished heart rate reactivity to the PASAT (P = 0.03) and increased beat-to-beat heart rate fluctuations in response to the CRTT (P = 0.05). Dehydration intensified CRTT- and PASAT-induced reductions of beat-to-beat heart rate fluctuations in females (gender x dehydration interactions: P = 0.04-0.05). Moderate dehydration induced by water restriction has no effect on blood pressure reactivity to mental stress. The effects on heart rate reactivity are small. However, stress-induced parasympathetic withdrawal may be fortified during dehydration in females, which suggests controlling for water intake when studying such responses.
DOI: 10.1111/j.1475-097X.2007.00750.x
PubMed: 17697025
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nuts="1">Rhénanie-Palatinat</region></placeName></affiliation></author><author><name sortKey="Szinnai, Gabor" sort="Szinnai, Gabor" uniqKey="Szinnai G" first="Gabor" last="Szinnai">Gabor Szinnai</name></author><author><name sortKey="Keller, Ulrich" sort="Keller, Ulrich" uniqKey="Keller U" first="Ulrich" last="Keller">Ulrich Keller</name></author><author><name sortKey="Schachinger, Hartmut" sort="Schachinger, Hartmut" uniqKey="Schachinger H" first="Hartmut" last="Schachinger">Hartmut Schachinger</name></author></analytic><series><title level="j">Clinical physiology and functional imaging</title><idno type="ISSN">1475-0961</idno><imprint><date when="2007" type="published">2007</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Blood Pressure</term><term>Cardiovascular System (innervation)</term><term>Cardiovascular System (physiopathology)</term><term>Choice Behavior</term><term>Cognition</term><term>Dehydration (complications)</term><term>Dehydration (physiopathology)</term><term>Dehydration (psychology)</term><term>Female</term><term>Heart Rate</term><term>Humans</term><term>Male</term><term>Parasympathetic Nervous System (physiopathology)</term><term>Reaction Time</term><term>Sex Factors</term><term>Stress, Psychological (complications)</term><term>Stress, Psychological (physiopathology)</term><term>Water Deprivation</term></keywords><keywords scheme="MESH" qualifier="complications" xml:lang="en"><term>Dehydration</term><term>Stress, Psychological</term></keywords><keywords scheme="MESH" qualifier="innervation" xml:lang="en"><term>Cardiovascular System</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Cardiovascular System</term><term>Dehydration</term><term>Parasympathetic Nervous System</term><term>Stress, Psychological</term></keywords><keywords scheme="MESH" qualifier="psychology" xml:lang="en"><term>Dehydration</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Blood Pressure</term><term>Choice Behavior</term><term>Cognition</term><term>Female</term><term>Heart Rate</term><term>Humans</term><term>Male</term><term>Reaction Time</term><term>Sex Factors</term><term>Water Deprivation</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Enhanced hydration increases the human cardiovascular reactivity to mental stress. If reduced water intake has the opposite effect, this would suggest controlling for water deprivation when studying such responses. Blood pressure, heart rate and parasympathetically dominated beat-to-beat heart rate fluctuations were assessed during resting baseline and mental stress. Two challenging cognitive-motor tasks, a 5-Choice Reaction Time Task (CRTT) and a Paced Auditory Serial Addition Task (PASAT), served as mental stress tests. Eight female and eight male volunteers were examined twice, after 24 h of water deprivation and after normal water intake (counterbalanced order, 7-day interval). Water deprivation resulted in moderate dehydration with a mean 2.6% decrease of total body weight. Dehydration did neither affect baseline blood pressure, heart rate, nor blood pressure reactivity to mental stress. However, dehydration slightly (-1.2 bpm) diminished heart rate reactivity to the PASAT (P = 0.03) and increased beat-to-beat heart rate fluctuations in response to the CRTT (P = 0.05). Dehydration intensified CRTT- and PASAT-induced reductions of beat-to-beat heart rate fluctuations in females (gender x dehydration interactions: P = 0.04-0.05). Moderate dehydration induced by water restriction has no effect on blood pressure reactivity to mental stress. The effects on heart rate reactivity are small. However, stress-induced parasympathetic withdrawal may be fortified during dehydration in females, which suggests controlling for water intake when studying such responses.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17697025</PMID><DateCreated><Year>2007</Year><Month>08</Month><Day>16</Day></DateCreated><DateCompleted><Year>2007</Year><Month>10</Month><Day>04</Day></DateCompleted><DateRevised><Year>2007</Year><Month>08</Month><Day>16</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1475-0961</ISSN><JournalIssue CitedMedium="Print"><Volume>27</Volume><Issue>5</Issue><PubDate><Year>2007</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Clinical physiology and functional imaging</Title><ISOAbbreviation>Clin Physiol Funct Imaging</ISOAbbreviation></Journal><ArticleTitle>Dehydration does not influence cardiovascular reactivity to behavioural stress in young healthy humans.</ArticleTitle><Pagination><MedlinePgn>291-7</MedlinePgn></Pagination><Abstract><AbstractText>Enhanced hydration increases the human cardiovascular reactivity to mental stress. If reduced water intake has the opposite effect, this would suggest controlling for water deprivation when studying such responses. Blood pressure, heart rate and parasympathetically dominated beat-to-beat heart rate fluctuations were assessed during resting baseline and mental stress. Two challenging cognitive-motor tasks, a 5-Choice Reaction Time Task (CRTT) and a Paced Auditory Serial Addition Task (PASAT), served as mental stress tests. Eight female and eight male volunteers were examined twice, after 24 h of water deprivation and after normal water intake (counterbalanced order, 7-day interval). Water deprivation resulted in moderate dehydration with a mean 2.6% decrease of total body weight. Dehydration did neither affect baseline blood pressure, heart rate, nor blood pressure reactivity to mental stress. However, dehydration slightly (-1.2 bpm) diminished heart rate reactivity to the PASAT (P = 0.03) and increased beat-to-beat heart rate fluctuations in response to the CRTT (P = 0.05). Dehydration intensified CRTT- and PASAT-induced reductions of beat-to-beat heart rate fluctuations in females (gender x dehydration interactions: P = 0.04-0.05). Moderate dehydration induced by water restriction has no effect on blood pressure reactivity to mental stress. The effects on heart rate reactivity are small. 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MajorTopicYN="N">Dehydration</DescriptorName><QualifierName UI="Q000150" MajorTopicYN="N">complications</QualifierName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName><QualifierName UI="Q000523" MajorTopicYN="N">psychology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006339" MajorTopicYN="N">Heart Rate</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010275" MajorTopicYN="N">Parasympathetic Nervous System</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011930" MajorTopicYN="N">Reaction Time</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D012737" MajorTopicYN="N">Sex Factors</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D013315" MajorTopicYN="N">Stress, Psychological</DescriptorName><QualifierName UI="Q000150" MajorTopicYN="N">complications</QualifierName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014868" MajorTopicYN="N">Water Deprivation</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2007</Year><Month>8</Month><Day>19</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2007</Year><Month>10</Month><Day>5</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2007</Year><Month>8</Month><Day>19</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">17697025</ArticleId><ArticleId IdType="pii">CPF750</ArticleId><ArticleId IdType="doi">10.1111/j.1475-097X.2007.00750.x</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Allemagne</li></country><region><li>Rhénanie-Palatinat</li></region><settlement><li>Trèves (Allemagne)</li></settlement><orgName><li>Université de Trèves</li></orgName></list><tree><noCountry><name sortKey="Keller, Ulrich" sort="Keller, Ulrich" uniqKey="Keller U" first="Ulrich" last="Keller">Ulrich Keller</name><name sortKey="Schachinger, Hartmut" sort="Schachinger, Hartmut" uniqKey="Schachinger H" first="Hartmut" last="Schachinger">Hartmut Schachinger</name><name sortKey="Szinnai, Gabor" sort="Szinnai, Gabor" uniqKey="Szinnai G" first="Gabor" last="Szinnai">Gabor Szinnai</name></noCountry><country name="Allemagne"><region name="Rhénanie-Palatinat"><name sortKey="Schwabe, Lars" sort="Schwabe, Lars" uniqKey="Schwabe L" first="Lars" last="Schwabe">Lars 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