Contributors to beat-to-beat stroke volume variability during acute mental stress in healthy volunteers

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review



Acute mental stress elicits sympathetic activation, increasing heart rate and shortening the QT interval, but it is unknown whether this activation translates to stroke volume (SV) changes. Multivariate power spectral decomposition was used to assess the influence of heart rate and QT variabilities on SV variability at rest and during acute mental stress. Acute mental stress elicits mild but statistically significant increase in SV variability. Heart rate variability contributes almost one third of SV variability, while the contribution of QT variability is below 3%. In conclusion, although heart rate variability appears to contribute directly to increase in SV variability during acute mental stress, most of SV variability is attributed to sources independent of heart rate and QT variabilities.Clinical Relevance-Acute mental stress elicits small fluctuations in stroke volume in healthy volunteers. Its significance for clinical populations remains to be established.


Original languageEnglish
Title of host publicationAnnual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Number of pages4
Publication statusPublished - 1 Jul 2023


Title45th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Abbreviated titleEMBC 2023
Conference number45
Duration24 - 27 July 2023
Degree of recognitionInternational event
LocationInternational Convention Centre

External IDs

ORCID /0000-0003-4012-0608/work/149081394
Scopus 85179643949
Mendeley e275b69e-b30a-33b6-b43d-796ea310d30e


Research priority areas of TU Dresden

DFG Classification of Subject Areas according to Review Boards

Subject groups, research areas, subject areas according to Destatis

Sustainable Development Goals

ASJC Scopus subject areas


  • stroke volume variability, QT interval variability, heart rate variability, acute mental stress, psychological stress, Mental stress