Study type: Medical/biological study (experimental study)

Do Mobile Phones Pose a Potential Risk to Autonomic Modulation of the Heart? med./bio.

Published in: Pacing Clin Electrophysiol 2011; 34 (11): 1511-1514

Aim of study (acc. to author)

To study the possible effects of radiofrequency fields emitted by digital mobile phones on cardiac autonomic modulation by short-time heart rate variability analysis.

Background/further details

20 healthy young subjects participated. They were rested in supine position at least for 15 minutes and heart rate variability parameters were recorded at baseline for five minutes. Afterwards, heart rate variability parameters were recorded at mobile phone "turned off mode", at "turned on mode", and at "calling mode" over 5 minutes periods for each stage.



Exposure Parameters
Exposure 1: 900–1,800 MHz
Modulation type: pulsed
Exposure duration: three times 5 min (see add. information)

Exposure 1

Main characteristics
Frequency 900–1,800 MHz
Exposure duration three times 5 min (see add. information)
Modulation type pulsed
Repetition frequency 217 Hz
Exposure setup
Exposure source
Setup test person lying on a bed in the test room
Additional info first 5 min: phone turned off; fastened to the test person's belt on the right side second 5 min: phone turned on; touching the left pectoral skin of the test person third 5 min: phone called from another phone in 2 m distance; vibration mode and ringing of the phone turned off; phone in the same position as in the second trial

No parameters are specified for this exposure.

Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

Neither time domain nor frequency domain analysis of heart rate variability parameters were altered significantly during "off mode", "on mode" or "calling mode" compared with their baseline values. Short-time exposure to electromagnetic fields emitted by a mobile phone did not affect the cardiac autonomic modulation in healthy subjects.

Study character:

Study funded by

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