A preliminary study of oscillating electromagnetic field effects on human spermatozoon motility.

Bioelectromagnetics · 2007 · Mixed · Very low evidence

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MixedVery low evidencePaper 5083

Exposure to a 50 Hz ELF-EMF with a 5 mT square waveform significantly increased sperm motility and other kinematic parameters. No significant effects on sperm motility were observed with a 5 mT sine wave (50 Hz) or a 2.5 mT square wave (50 Hz). Effects from 5…

Study snapshot

PublicationBioelectromagnetics · 2007

Study typein_vitro

Reported directionMixed

Evidence ratingVery low

Abstract

Some effects of extremely low frequency electromagnetic fields (ELF-EMFs) on human spermatozoa are reported. Significant increases in the values of the motility and of the other kinematic parameters have been observed when spermatozoa were exposed to an ELF-EMF with a square waveform of 5 mT amplitude and frequency of 50 Hz. By contrast, a 5 mT sine wave (50 Hz) and a 2.5 mT square wave (50 Hz) exposure did not produce any significant effect on sperm motility. The effects induced by ELF-EMF (50 Hz; 5 mT) during the first 3 h of exposure persisted for 21 h after the end of the treatment. These results indicate that ELF-EMF exposure can improve spermatozoa motility and that this effect depends on the field characteristics.

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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 typein_vitro

Effect directionmixed

PopulationHuman spermatozoa

Sample sizeNot supplied

ExposureELF · 0.05 MHz · first 3 h of exposure; effects persisted for 21 h after end of treatment

Evidence strengthVery lowConfidence: 74% · Peer reviewed: yes

Main findings

Outcomes measured

Spermatozoon motility
Kinematic parameters of sperm motility

Limitations

Sample size not reported in abstract
Study described as preliminary
In vitro study on spermatozoa; generalizability to in vivo fertility outcomes not addressed in abstract
Exposure conditions varied by waveform and amplitude; not all conditions showed effects

View raw extracted JSON

{
  "study_type": "in_vitro",
  "exposure": {
    "band": "ELF",
    "source": null,
    "frequency_mhz": 0.05,
    "sar_wkg": null,
    "duration": "first 3 h of exposure; effects persisted for 21 h after end of treatment"
  },
  "population": "Human spermatozoa",
  "sample_size": null,
  "outcomes": [
    "Spermatozoon motility",
    "Kinematic parameters of sperm motility"
  ],
  "main_findings": "Exposure to a 50 Hz ELF-EMF with a 5 mT square waveform significantly increased sperm motility and other kinematic parameters. No significant effects on sperm motility were observed with a 5 mT sine wave (50 Hz) or a 2.5 mT square wave (50 Hz). Effects from 50 Hz, 5 mT exposure during the first 3 h persisted for 21 h after treatment ended.",
  "effect_direction": "mixed",
  "limitations": [
    "Sample size not reported in abstract",
    "Study described as preliminary",
    "In vitro study on spermatozoa; generalizability to in vivo fertility outcomes not addressed in abstract",
    "Exposure conditions varied by waveform and amplitude; not all conditions showed effects"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "extremely low frequency",
    "ELF-EMF",
    "50 Hz",
    "millitesla",
    "square waveform",
    "sine wave",
    "human spermatozoa",
    "motility",
    "kinematic parameters"
  ],
  "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: 10.1002/bem.20278
PubMed: 17019728

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