Mental work stimulates cardiovascular responses through a reduction in cardiac parasympathetic modulation in men and women

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dc.contributor.authorPérusse-Lachance, Émilie-
dc.contributor.authorTremblay, Angelo-
dc.contributor.authorChaput, Jean-Philippe-
dc.contributor.authorPoirier, Paul-
dc.contributor.authorTeasdale, Normand-
dc.contributor.authorDrapeau, Vicky-
dc.contributor.authorSénécal, Caroline-
dc.contributor.authorBrassard, Patrice-
dc.description.abstractMental Work (MW) stimulates Cardiovascular (CV) functions in healthy adults and a reduction in cardiac parasympathetic modulation could be one mechanism involved in such a response. The influence of sex on these CV responses remains ambiguous. The aim of the study was to evaluate CV impacts of MW in healthy individuals and whether sex influences CV responses induced by MW. The impact of a 45-min reading and writing session vs. a control condition, on Blood Pressure (BP), Heart Rate (HR), and Heart Rate Variability (HRV), was evaluated in 44 healthy adults with the use of a randomized crossover design. The influence of sex on those variables was then evaluated. Diastolic BP (74 ± 1 vs. 69 ± 1 mmHg; p < 0.05) and mean arterial pressure (MAP; 87 ± 7 vs. 83 ± 8 mmHg; p < 0.005), HR (68 ± 1 vs. 62 ± 1 bpm; p < 0.0001) and low frequency/high frequency ratio (2.8 ± 0.1 vs. 2.0 ± 0.1; p < 0.0001) were higher, while global HRV (SDNN: 84 ± 3 vs.104 ± 3 ms; p < 0.0001) and cardiac parasympathetic activity were lower during MW (p < 0.0001) vs. the control condition in the whole sample. During both experimental conditions, HR was higher (p < 0.0001), while BP, rMSSD, pNN50 and low frequency component of HRV were lower in women compared to men (all p < 0.05). The intensity of the cognitive demand and its influence on CV variables were comparable between men and women. These results support that MW increases BP and HR through decrement in cardiac parasympathetic modulation in healthy subjects and suggest that sex does not influence CV responses induced by cognitive demand of similar
dc.publisherOMICS Publishing Groupfr
dc.subjectCardiovascular responsefr
dc.subjectMental workfr
dc.subjectCardiac parasympathetic modulationfr
dc.subjectBlood pressurefr
dc.subjectHeart ratefr
dc.titleMental work stimulates cardiovascular responses through a reduction in cardiac parasympathetic modulation in men and womenfr
dc.typeCOAR1_1::Texte::Périodique::Revue::Contribution à un journal::Article::Article de recherchefr
dcterms.bibliographicCitationBioenergetics, Vol. 02 (01), 1-6 (2013)fr
dc.audienceProfesseurs (Enseignement supérieur)fr
dc.subject.rvmTravail intellectuelfr
dc.subject.rvmAppareil cardiovasculaire -- Différences entre sexesfr
rioxxterms.versionVersion of Recordfr
rioxxterms.project.funder_nameCanadian Institutes of Health Researchfr
bul.rights.periodeEmbargo0 moisfr
Collection:Articles publiés dans des revues avec comité de lecture

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