Natural Hazards

, Volume 69, Issue 1, pp 25–37 | Cite as

Solar and geomagnetic activity effects on heart rate variability

  • S. DimitrovaEmail author
  • I. Angelov
  • E. Petrova
Original Paper


Investigation into possible space weather hazards on cardiovascular system has been performed. A group of 14 healthy volunteers was examined in the spring of 2009 and 2 healthy persons performed electrocardiograph records for a period of 1 year everyday in the morning and in the evening. Results revealed that heart rate variability (HRV) parameters of the group varied strongly from the day before till 3 days after the registered weak storms during the time of investigation. Blood pressure and subjective psychophysiological complaints increased statistically significantly from 0 day till +2nd day. Heart rate (HR) of the group showed a trend for decrease. It was established that morning measurements were more sensitive to space weather variations in comparison with evening measurements. Both persons with prolonged registrations for a period of year did not reveal graded response to geomagnetic storms with different intensities. Both of them decreased HR during moderate storms, but they increased HR during major storms and on the days before and after these storms. HRV parameters varied significantly on these days.


Space weather Cardiovascular system Blood pressure Heart rate 



We thankfully acknowledge the contribution of all volunteers who took part in the examinations.


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.Space Research and Technology InstituteBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Department of PhysicsSouth West University “Neofit Rilski”BlagoevgradBulgaria
  3. 3.Institute for Nuclear Research and Nuclear EnergyBulgarian Academy of SciencesSofiaBulgaria
  4. 4.Institute of Experimental Morphology, Pathology and Anthropology with MuseumBulgarian Academy of SciencesSofiaBulgaria

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