Study type: Medical/biological study (experimental study)

Effects of 60 Hz magnetic fields on teenagers and adults. med./bio.

Published in: Environ Health 2013; 12 (1): 42-1-42-8

Aim of study (acc. to author)

The aim of this study was to test whether 60 Hz magnetic fields affect heart rate, respiratory rate, and heart rate variability, or give rise to subjective symptoms in adults and teenagers. The ability of teenagers and adults to perceive exposure to a magnetic field was also compared.

Background/further details

Two volunteer groups of 30 adults and 30 teenagers (>13 years old) were tested. Participants with electromagnetic hypersensitivity who attributed their symptoms to appliances and/or high voltage transmission lines or mobile phones were excluded.

Endpoint

Exposure

Exposure Parameters
Exposure 1: 60 Hz
Exposure duration: continuous for 32 min

Exposure 1

Main characteristics
Frequency 60 Hz
Type
Exposure duration continuous for 32 min
Exposure setup
Exposure source
Setup pair of coils (2000 turns with a radius of 10 cm, height of 20 cm, and coil thickness of 0.7 mm); participant's head positioned in the centre between the coils; distance between the coils was 50 cm
Sham exposure A sham exposure was conducted.
Parameters
Measurand Value Type Method Mass Remarks
magnetic flux density 12.5 µT - - - at the head
electric field strength 3.52 V/m - - - ±0,95 V/m

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)

In both adults and teenagers, exposure to a 60 Hz magnetic field had no effects on heart rate, respiratory rate, heart rate variability, or subjective symptoms. Neither adults nor teenagers could perceive the magnetic field. No indication was observed that teenagers perceived the magnetic field better than adults.
The authors conclude that there were no effects of 32 min exposure to a 60 Hz 12.5 µT magnetic field on the variables examined in adults or teenagers.

Study character:

Study funded by

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