Study type: Medical/biological study (experimental study)

Effects of short-term exposure to powerline-frequency electromagnetic field on the electrical activity of the heart med./bio.

Published in: Arch Environ Occup Health 2012; 67 (2): 65-71

Aim of study (acc. to author)

To study the short-term effects of extremely low frequency magnetic fields on the heart of rats.

Background/further details

20 rats were divided into an exposure group (n=10) and a sham exposure group (n=10).



Exposure Parameters
Exposure 1: 50 Hz
Exposure duration: continuous for 2 min

Exposure 1

Main characteristics
Frequency 50 Hz
Exposure duration continuous for 2 min
Exposure setup
Exposure source
Setup pair of Helmholtz coils with a diameter of 10 cm, consisting of 225 turns of wire; coils spaced 10 cm apart; extremities of the anesthetized rat fixed with plastic handcuffs to a 10 cm x 15 cm x 0.7 cm polyvinyl chloride plate; plate positioned in the coils so that the rat's body was between the coils and its extremities outside the coils
Sham exposure A sham exposure was conducted.
Measurand Value Type Method Mass Remarks
magnetic flux density 1 µT effective value measured and calculated - -
electric field strength 0.1 V/m - measured - -

Reference articles

  • Miller DL et al. (1997): Comparison of cardiac and 60 Hz magnetically induced electric fields measured in anesthetized rats

Exposed system:

Methods Endpoint/measurement parameters/methodology

Investigated system:
Investigated organ system:
Time of investigation:
  • before exposure
  • during exposure
  • after exposure

Main outcome of study (acc. to author)

The data did not show any effect of the extremely low frequency magnetic field exposure on the ECG parameters in rats.

Study character:

Study funded by

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