I have a study protocol that calls for HRV measurements during an emotional stressor and a potential soother (in one of the groups). While I do have the HRV recording devices, I'm unclear about times. How long should I take the HRV measurement at rest before the stressor? Do I need HRV measurements after the stressor is removed? Which mathematical function should be applied to judge the autonomous nervous system?
Hi Itamar,
maybe this Conference-Paper could help you.
Conference Paper Acute Mental Stress Detection via Ultra-short term HRV Analysis
Well I managed to find a very good answer myself, in this paper:
https://www.frontiersin.org/articles/10.3389/fpsyg.2017.00213/full
I'd also suggest the Kubios Users Guide - provides a basic overview of HRV
https://www.kubios.com/downloads/Kubios_HRV_Users_Guide.pdf
That depends on the index you want use and. Different HRV indices have specific assumptions. In addition, it depends on the time you will measure resting condition. I recommend that you check out this paper:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5624990/
Dear Itamar,
In addition to the previous suggestions, I recommend you reading the task force for standardization of HRV, from 1996:
Article Heart rate variability: Standards of measurement, physiologi...
This task force discuss on the time necessary for reliable analysis of classical measurements. Then, if you are also interested in nonlinear approaches, you can find good reviews on the topic, such as:
Article Advances in heart rate variability signal analysis: Joint po...
Article Methods derived from nonlinear dynamics for analysing heart ...
Hope it helps. Good luck!
Luiz
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