The assessment of Heart Rate Variability (HRV) and Task Load Index (TLI) as physiological markers for physical stress

A. Nassef, M. Mahfouf, D. A. Linkens, E. Elsamahy, A. Roberts, P. Nickel, G. R.J. Hockey, G. Panoutsos

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

This paper presents a new research study relating to the sensitivity of a number of psycho-physiological markers to physical workload. The workload profile was of a cyclicloading type and the markers included the Heart Rate Variability (HRV) and the Task Load Index (TLI) as ECG and EEG representatives, respectively. These markers were smoothed to extract their trends and to study their respective correlations with the workload. The average values relating to the 'rest'-'load'-'rest' sequence showed that these markers correlate with the workload with a decrease of HRV and increase of TLI values. The effect of the amount of workload on these markers showed that HRV decreases as the workload increases and vice versa, while TLI showed that it increases as the workload increases and vice versa.

Original languageEnglish
Title of host publicationWorld Congress on Medical Physics and Biomedical Engineering
Subtitle of host publicationSpecial Topics and Workshops
PublisherSpringer Verlag
Pages146-149
Number of pages4
Edition13
ISBN (Print)9783642038945
DOIs
StatePublished - 2009
Externally publishedYes
EventWorld Congress on Medical Physics and Biomedical Engineering: Special Topics and Workshops - Munich, Germany
Duration: 7 Sep 200912 Sep 2009

Publication series

NameIFMBE Proceedings
Number13
Volume25
ISSN (Print)1680-0737

Conference

ConferenceWorld Congress on Medical Physics and Biomedical Engineering: Special Topics and Workshops
Country/TerritoryGermany
CityMunich
Period7/09/0912/09/09

Keywords

  • Curve smoothing
  • Electroencephalogram
  • Heart rate variability
  • Signal processing

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