Tampere University of Technology

TUTCRIS Research Portal

Age‐related circulatory responses to whole body cooling: observations by heart rate variability

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)57-64
JournalFinnish Journal of eHealth and eWelfare
Volume7
Issue number2-3
Publication statusPublished - 11 May 2015
Publication typeA1 Journal article-refereed

Abstract

The purpose was to study potential age ‐ related changes in the circulatory system via heart rate variability (HRV) by gradually lowering ambient temperature (0.2°C/min) from thermoneutral (32 C°) towards cold (18 C°). ECG was recorded from a young (31 years) and from an older subject (78 years), both males. During the tests, brachium blood pressure (BP) was recorded.

During the cooling, BP increased in both subjects (young from 95/69 to 132/75 mmHg, old from 125/68 to 176/101 mmHg), the latter exhibiting a prominent rise in diastolic values after cooling. HRV parameters increased in both subjects during the cold exposure being modest in the younger subject as compared to the older one. Also, recovery from the cold in terms of HRV was faster in the younger subject. The present preliminary observations indicate that older age is coupled with altered HRV response to a mild whole‐body skin cooling.

ASJC Scopus subject areas

Keywords

  • ECG, Heart rate variability, elderly, thermal balance, mild whole‐body cooling, Blood pressure

Publication forum classification

Field of science, Statistics Finland