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The influence of low-frequency magnetic field on plasma antioxidant capacity and heart rate.

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Ciejka EB, Goraca A · 2009

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Exposure duration affected heart rate, plasma antioxidant capacity, and the organism's defence against free radicals in rats.

Plain English Summary

Summary written for general audiences

The study tested whether a time-variable magnetic field affects heart rate and plasma antioxidant capacity. Tests were performed on Sprague-Dawley rats exposed to the magnetic field at a frequency of 40 Hz and induction of 7 mT for 30 and 60 minutes. A significant decrease of the heart rate was observed after 14 days of exposure. Exposure at 60 minutes for 14 days caused a significant decrease of the organism antioxidant defence.

Why This Matters

Measurements of ECG and plasma antioxidant capacity were taken before exposure, after a single exposure, and after 14 days of exposure. Plasma antioxidant capacity was expressed in the number of reduced iron ions.

Exposure Details

Magnetic Field
7 mT
Source/Device
40 Hz
Exposure Duration
30 and 60 minutes

Exposure Context

This study used 7 mT for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 7 mTExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern range (Building Biology)This level is 35 times the FCC limit
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 40 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 40 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale

Study Details

The aim of the study was to check whether a time-variable magnetic field of constant frequency and induction affects the heart rate and plasma antioxidant capacity.

The tests were performed on Spraque-Dawley rats exposed to the magnetic field of the following param...

A significant decrease of the heart rate was observed after 14 days of exposure. A variable magnetic...

The exposure time affects heart rate, plasma antioxidant capacity and the organism defense ability against free radicals.

Cite This Study
Ciejka EB, Goraca A (2009). The influence of low-frequency magnetic field on plasma antioxidant capacity and heart rate. Wiad Lek. 62(2):81-86, 2009.
Show BibTeX
@article{eb_2009_the_influence_of_lowfrequency_335,
  author = {Ciejka EB and Goraca A},
  title = {The influence of low-frequency magnetic field on plasma antioxidant capacity and heart rate.},
  year = {2009},
  
  url = {https://europepmc.org/article/med/20141054},
}
PubMed: 20141054

Cited By (12 papers)

Quick Questions About This Study

The tests were performed on Sprague-Dawley rats.
A significant decrease of the heart rate was observed after 14 days of exposure.
Plasma antioxidant capacity was expressed in the number of reduced iron ions.
Measurements were taken before exposure, after a single exposure, and after 14 days of exposure.
The exposure time affects heart rate, plasma antioxidant capacity and the organism defense ability against free radicals.