Methods and Experiments for Sensing Variations in Solar Activity and Defining Their Impact on Heart Variability

Sensors (Basel, Switzerland) · 2021 · Harm · Insufficient evidence

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HarmInsufficient evidencePaper 1104

The paper reports that variations in solar activity, described as causing major alterations in low-level electromagnetic fields, are associated with changes in heart rate variability, including changes in HRV spectral bands (VLF, LF, HF). The authors state th…

Study snapshot

PublicationSensors (Basel, Switzerland) · 2021

Study typeother

Reported directionHarm

Evidence ratingInsufficient

Abstract

Methods and Experiments for Sensing Variations in Solar Activity and Defining Their Impact on Heart Variability Michael Hanzelka, Jiří Dan, Zoltán Szabó, Zdeněk Roubal, Přemysl Dohnal, Radim Kadlec. Methods and Experiments for Sensing Variations in Solar Activity and Defining Their Impact on Heart Variability. Sensors (Basel). 2021 Jul 14;21(14):4817. doi: 10.3390/s21144817. Abstract This paper evaluates variations in solar activity and their impact on the human nervous system, including the manner in which human behavior and decision-making reflect such effects in the context of (symmetrical) social interactions. The relevant research showed that solar activity, manifesting itself through the exposure of the Earth to charged particles from the Sun, affects heart variability. The evaluation methods focused on examining the relationships between selected psychophysiological data and solar activity, which generally causes major alterations in the low-level electromagnetic field. The investigation within this paper revealed that low-level EMF changes are among the factors affecting heart rate variability and, thus, also variations at the spectral level of the rate, in the VLF, (f = 0.01-0.04 Hz), LF (f = 0.04-0.15 Hz), and HF (f = 0.15 až 0.40 Hz) bands. The results of the presented experiments can also be interpreted as an indirect explanation of sudden deaths and heart failures. pubmed.ncbi.nlm.nih.gov

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionharm

Populationhumans

Sample sizeNot supplied

ExposureELF

Evidence strengthInsufficientConfidence: 62% · Peer reviewed: yes

Main findings

Outcomes measured

heart rate variability (HRV)
spectral components of HRV (VLF 0.01–0.04 Hz, LF 0.04–0.15 Hz, HF 0.15–0.40 Hz)
psychophysiological data
human behavior and decision-making (in context of social interactions)
sudden deaths and heart failures (indirect interpretation)

Limitations

Sample size not reported in the abstract
Exposure characterization is described generally as 'low-level EMF changes' related to solar activity; quantitative exposure metrics are not provided
Study design and control for confounding are not described in the abstract
Claims regarding sudden deaths/heart failures are described as an indirect interpretation rather than direct outcome measurement

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": "ELF",
    "source": "solar activity",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": "humans",
  "sample_size": null,
  "outcomes": [
    "heart rate variability (HRV)",
    "spectral components of HRV (VLF 0.01–0.04 Hz, LF 0.04–0.15 Hz, HF 0.15–0.40 Hz)",
    "psychophysiological data",
    "human behavior and decision-making (in context of social interactions)",
    "sudden deaths and heart failures (indirect interpretation)"
  ],
  "main_findings": "The paper reports that variations in solar activity, described as causing major alterations in low-level electromagnetic fields, are associated with changes in heart rate variability, including changes in HRV spectral bands (VLF, LF, HF). The authors state the experimental results could be interpreted as an indirect explanation of sudden deaths and heart failures.",
  "effect_direction": "harm",
  "limitations": [
    "Sample size not reported in the abstract",
    "Exposure characterization is described generally as 'low-level EMF changes' related to solar activity; quantitative exposure metrics are not provided",
    "Study design and control for confounding are not described in the abstract",
    "Claims regarding sudden deaths/heart failures are described as an indirect interpretation rather than direct outcome measurement"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.62,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "solar activity",
    "charged particles",
    "low-level electromagnetic field",
    "ELF",
    "heart rate variability",
    "VLF",
    "LF",
    "HF",
    "psychophysiological data",
    "nervous system"
  ],
  "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/s21144817
PubMed: 34300557

Read the original paper →

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