Cardiovascular and sympathetic responses to a mental stress task in young patients with hypertension and/or obesity

Title:

Cardiovascular and sympathetic responses to a mental stress task in young patients with hypertension and/or obesity

Creator:

Garafova, A., Adela Penesová, Eva Čižmárová, Marko, A., Vlcek, M., and Daniela Ježová

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d06953db-d45f-41bf-b276-2b46171ea46c
uuid:d06953db-d45f-41bf-b276-2b46171ea46c
issn:0862-8408

Subject:

Fyziologie člověka a srovnávací fyziologie, hypertenze, stres (fyziologie), obezita, srdeční rytmus, hypertension, stress (physiology), obesity, heart rate, mental stress, sympathetic activity, heart rate variability, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print, bez média, and svazek

Description:

Present study was aimed to investigate sympathetic responses to mental stress with hypothesis that the presence of obesity in patients with hypertension has a modifying effect. Young male subjects, 8 with hypertension grade I, with BMI<25 kg/m2 (HT), 10 with hypertension grade I, and BMI>30 kg/m2 (HT OB), 14 healthy controls with BMI<30 kg/m2 (OB), and 13 healthy controls with BMI<25 kg/m2 (C) underwent the Stroop test. ECG was recorded continuously to evaluate heart rate variability (HRV). Blood pressure (BP) and catecholamine concentrations were measured at baseline, at the end of mental stress test and 15 min thereafter. Patients with HT demonstrated increased adrenaline concentrations and enhanced stress-induced noradrenaline release compared to that in healthy controls. In obese subjects, stress-induced increase of systolicBP was lower compared to lean individuals. Stress exposure induced a significant rise in the low frequency power component of HRV, however the increase was lower in the HT OB group compared to C. Obesity in patients with hypertension did not lead to a different reaction in comparison with lean hypertensive subjects. The present data demonstrate higher sympathoadrenal activity in early-stage of hypertension. Obesity is connected with higher resting systolicBP and modifies the HRV response to mental stress., A. Garafova, A. Penesova, E. Cizmarova, A. Marko, M. Vlcek, D. Jezova., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2014 Volume:63 | Number:Suppl 4

Harvested from:

CDK

Metadata only:

false