Cardiovascular sympathetic arousal in response to different mental stressors

Title:

Cardiovascular sympathetic arousal in response to different mental stressors

Creator:

Mestanik, M., Mestanikova, A., Visnovcova, Z., Andrea Čalkovská, and Ingrid Tonhajzerová

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:0fe401ab-caaa-4720-bdd6-b6d1b2671a94
uuid:0fe401ab-caaa-4720-bdd6-b6d1b2671a94
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, sympatický nervový systém, srdeční rytmus, sympathetic nervous system, heart rate, mental stress, systolic arterial pressure variability, heart rate variability, symbolic dynamics, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

The altered regulation of autonomic response to mental stress can result in increased cardiovascular risk. The laboratory tests used to simulate the autonomic responses to real-life stressors do not necessarily induce generalized sympathetic activation; therefore, the assessment of regulatory outputs to different effector organs could be important. We aimed to study the cardiovascular sympathetic arousal in response to different mental stressors (Stroop test, mental arithmetic test) in 20 healthy students. The conceivable sympathetic vascular index - spectral power of low frequency band of systolic arterial pressure variability (LF-SAP) and novel potential cardiosympathetic index - symbolic dynamics heart rate variability index 0V% were evaluated. The heart and vessels responded differently to mental stress - while Stroop test induced increase of both 0V% and LF-SAP indices suggesting complex sympathetic arousal, mental arithmetic test evoked only 0V% increase compared to baseline (p<0.01, p<0.001, p<0.01, respectively). Significantly greater reactivity of LF-SAP, 0V%, heart rate (HR) and mean arterial pressure (MAP) were found in response to Stroop test compared to mental arithmetic test potentially indicating the effect of different central processing (0V%, LF-SAP: p<0.001; HR, MAP: p<0.01). The different effectors’ sympathetic responses to cognitive stressors could provide novel important information regarding potential pathomechanisms of stress-related diseases., M. Mestanik, A. Mestanikova, Z. Visnovcova, A. Calkovska, I. Tonhajzerova., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

Physiological research | 2015 Volume:64 | Number:Suppl 5

Harvested from:

CDK

Metadata only:

false