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European Journal of Applied Physiology

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01-06-2020 | Original Article

Exploring the relationship between geomagnetic activity and human heart rate variability

Authors: Matthew Mattoni, Sangtae Ahn, Carla Fröhlich, Flavio Fröhlich

Published in: European Journal of Applied Physiology | Issue 6/2020

Abstract

Purpose

Both geomagnetic and solar activity fluctuate over time and have been proposed to affect human physiology. Heart rate variability (HRV) has substantial health implications regarding the ability to adapt to stressors and has been shown to be altered in many cardiovascular and neurological disorders. Intriguingly, previous work found significant, strong correlations between HRV and geomagnetic/solar activity. The purpose of this study to replicate these findings. We simultaneously measured HRV during a 30-day period.

Methods

We recruited 20 healthy participants and measured their HRV for a 30-day period. We also collected geomagnetic and solar activity during this period for investigating their relationship with the HRV data.

Results

In agreement with previous work, we found several significant correlations between short-term HRV and geophysical time-series. However, after correction for autocorrelation, which is inherent in time-series, the only significant results were an increase in very low frequency during higher local geomagnetic activity and a geomagnetic anticipatory decrease in heart rate a day before the higher global geomagnetic activity. Both correlations were very low. The loss of most significant effects after this correction suggests that previous findings may be a result of autocorrelation. A further note of caution is required since our and the previous studies in the field do not correct for multiple comparisons given the exploratory analysis strategy.

Conclusion

We thus conclude that the effects of geomagnetic and solar activity are (if present) most likely of very small effect size and we question the validity of the previous studies given the methodological concerns we have uncovered with our work.

Alabdulgader A, McCraty R, Atkinson M et al (2018) Long-term study of heart rate variability responses to changes in the solar and geomagnetic environment. Sci Rep 8:2663. https://doi.org/10.1038/s41598-018-20932-x CrossRefPubMedPubMedCentral

Baek HJ, Cho C-H, Cho J, Woo J-M (2015) Reliability of ultra-short-term analysis as a surrogate of standard 5-min analysis of heart rate variability. Telemed e-Health 21:404–414. https://doi.org/10.1089/tmj.2014.0104 CrossRef

Baevsky RM, Petrov VM, Cornelissen G et al (1997) Meta-analyzed heart rate variability, exposure to geomagnetic storms, and the risk of ischemic heart disease. Scr Med (Brno) 70:201–206

Bakdash JZ, Marusich LR (2017) Repeated measures correlation. Front Psychol 8:456. https://doi.org/10.3389/fpsyg.2017.00456 CrossRefPubMedPubMedCentral

Blood JD, Wu J, Chaplin TM et al (2015) The variable heart: High frequency and very low frequency correlates of depressive symptoms in children and adolescents. J Affect Disord 186:119–126. https://doi.org/10.1016/j.jad.2015.06.057 CrossRefPubMedPubMedCentral

Buccelletti E, Gilardi E, Scaini E et al (2009) Heart rate variability and myocardial infarction: systematic literature review and metanalysis. Eur Rev Med Pharmacol Sci 13:299–307PubMed

Chernouss S, Vinogradov A, Vlassova E (2001) Geophysical hazard for human health in the circumpolar auroral belt: evidence of a relationship between heart rate variation and electromagnetic disturbances. Nat Hazards 23:121–135. https://doi.org/10.1023/A:1011108723374 CrossRef

Dimitrova S, Stoilova I, Yanev T, Cholakov I (2004) Effect of local and global geomagnetic activity on human cardiovascular homeostasis. Arch Environ Heal An Int J 59:84–90. https://doi.org/10.3200/AEOH.59.2.84-90 CrossRef

Dimitrova S, Angelov I, Petrova E (2013) Solar and geomagnetic activity effects on heart rate variability. Nat Hazards 69:25–37. https://doi.org/10.1007/s11069-013-0686-y CrossRef

Harris PA, Taylor R, Thielke R et al (2009) Research electronic data capture (REDCap)—a metadata-driven methodology and workflow process for providing translational research informatics support. J Biomed Inform 42:377–381. https://doi.org/10.1016/j.jbi.2008.08.010 CrossRefPubMed

Klinkenberg AV, Nater UM, Nierop A et al (2009) Heart rate variability changes in pregnant and non-pregnant women during standardized psychosocial stress. Acta Obstet Gynecol Scand 88:77–82. https://doi.org/10.1080/00016340802566762 CrossRefPubMed

Krygier JR, Heathers JAJ, Shahrestani S et al (2013) Mindfulness meditation, well-being, and heart rate variability: a preliminary investigation into the impact of intensive Vipassana meditation. Int J Psychophysiol 89:305–313. https://doi.org/10.1016/j.ijpsycho.2013.06.017 CrossRefPubMed

Louis S, Borgelt C, Grün S (2010) Generation and selection of surrogate methods for correlation analysis. Analysis of parallel spike trains. Springer, Berlin, pp 359–382CrossRef

Neuroskeptic (2018) Solar silliness: the heart–sun connection. Discov Mag

Malik M, Camm AJ (1990) Heart rate variability. Clin Cardiol 13:570–576. https://doi.org/10.1002/clc.4960130811 CrossRefPubMed

McCraty R, Atkinson M, Stolc V et al (2017) Synchronization of human autonomic nervous system rhythms with geomagnetic activity in human subjects. Int J Environ Res Public Health 14:770. https://doi.org/10.3390/ijerph14070770 CrossRefPubMedCentral

Mccraty R, Shaffer F (2015) Heart rate variability: new perspectives on physiological mechanisms, assessment of self-regulatory capacity, and health risk. Glob Adv Heal Med 4:46–61. https://doi.org/10.7453/gahmj.2014.073 CrossRef

Monfredi O, Lyashkov AE, Johnsen A-B et al (2014) Biophysical characterization of the underappreciated and important relationship between heart rate variability and heart rate. Hypertension 64:1334–1343. https://doi.org/10.1161/HYPERTENSIONAHA.114.03782 CrossRefPubMedPubMedCentral

Montano N, Porta A, Cogliati C et al (2009) Heart rate variability explored in the frequency domain: a tool to investigate the link between heart and behavior. Neurosci Biobehav Rev 33:71–80CrossRef

Nakamura T, Small M (2005) Small-shuffle surrogate data: testing for dynamics in fluctuating data with trends. Phys Rev E Stat Nonlinear Soft Matter Phys. https://doi.org/10.1103/PhysRevE.72.056216 CrossRef

Ori Z, Monir G, Weiss J et al (1992) Heart rate variability: frequency domain analysis. Cardiol Clin 10:499–533CrossRef

Palmer SJ, Rycroft MJ, Cermack M (2006) Solar and geomagnetic activity, extremely low frequency magnetic and electric fields and human health at the Earth’s surface. Surv Geophys 27:557–595. https://doi.org/10.1007/s10712-006-9010-7 CrossRef

Shaffer F, McCraty R, Zerr CL (2014) A healthy heart is not a metronome: an integrative review of the heart’s anatomy and heart rate variability. Front Psychol 5:1040. https://doi.org/10.3389/fpsyg.2014.01040 CrossRefPubMedPubMedCentral

Small M, Tse CK (2003) Detecting determinism in time series: the method of surrogate data. IEEE Trans Circuits Syst I Fundam Theory Appl 50:663–672. https://doi.org/10.1109/TCSI.2003.811020 CrossRef

Stoupel E (2006) Cardiac arrhythmia and geomagnetic activity. Indian Pacing Electrophysiol J 6:49–53PubMedPubMedCentral

Sztajzel J (2004) Heart rate variability: a noninvasive electrocardiographic method to measure the autonomic nervous system. Swiss Med Wkly 134:514–522PubMed

Tapping KF (2013) The 10.7 cm solar radio flux (F10.7). Sp Weather 11:394–406. https://doi.org/10.1002/swe.20064 CrossRef

Tarvainen MP, Niskanen J-P, Lipponen JA et al (2014) Kubios HRV—heart rate variability analysis software. Comput Methods Progr Biomed 113:210–220. https://doi.org/10.1016/J.CMPB.2013.07.024 CrossRef

Watanabe Y, Cornélissen G, Halberg F et al (2001) Associations by signatures and coherences between the human circulation and helio- and geomagnetic activity. Biomed Pharmacother 55(Suppl 1):76s–83sPubMed

Yang AC, Hong C-J, Tsai S-J (2010) Heart rate variability in psychiatric disorders

Title: Exploring the relationship between geomagnetic activity and human heart rate variability
Authors: Matthew Mattoni
Sangtae Ahn
Carla Fröhlich
Flavio Fröhlich
Publication date: 01-06-2020
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Applied Physiology / Issue 6/2020
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-020-04369-7

At a glance: The STEP trials

Springer Medicine

Exploring the relationship between geomagnetic activity and human heart rate variability

Abstract

Purpose

Methods

Results

Conclusion

At a glance: The STEP trials

Springer Medicine

Abstract

Purpose

Methods

Results

Conclusion

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