Effects of the cold pressor test on cardiac autonomic control in normal subjects

Title:

Effects of the cold pressor test on cardiac autonomic control in normal subjects

Creator:

Mourot, Laurent, Bouhaddi, M., and Regnard, J.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:471d67d9-abf4-41fb-aa81-30c9ac6de19a
uuid:471d67d9-abf4-41fb-aa81-30c9ac6de19a

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie, spektrální analýza, fraktály, physiology, spectrum analysis, fractals, heart rate variability, detrended fluctuation analysis, cold pressor test, 14, and 612

Type:

article, články, model:article, and TEXT

Format:

print

Description:

The cold pressor test (CPT) triggers in healthy subjects a vascular sympathetic activation and an increase in blood pressure. The heart rate (HR) response to this test is less well defined, with a high inter-individual variability. We used traditional spectral analysis together with the non-linear detrended fluctuation analysis to study the autonomic control of HR during a 3-min CPT. 39 healthy young subjects (23.7 ± 3.2 years, height 180.4 ± 4.7 cm and weight 73.3 ± 6.4 kg) were divided into two groups according to their HR responses to CPT. Twenty subjects have a sustained increase in HR throughout the test with reciprocal autonomic interaction, i.e. increase in sympathetic activity and decrease vagal outflow. In the 19 remainders, HR decreased after an initial increase, with indication of involvement of both sympathetic and vagal outflow. Baseline evaluation of the subjects revealed no difference between the two groups. Nevertheless, a higher sympathetic activity at the skin level during CPT was present in the group with decreased HR. Further studies are needed to explain why healthy subjects react differently to the CPT and if this has potential clinical implications., L. Mourot, M. Bouhaddi, J. Regnard., and Obsahuje seznam literatury

Language:

English

Rights:

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

Source:

Physiological research | 2009 Volume:58 | Number:1

Harvested from:

CDK

Metadata only:

false