Medical/biological study (experimental study)

The cardiac effects of a mobile phone positioned closest to the heart med./bio.

By: Tamer A, Gunduz H, Ozyildirim S

Published in: Anadolu Kardiyol Derg 2009; 9 (5): 380-384

Aim of study (acc. to author)

To study the effect of mobile phone on human cardiac electrical activity while the mobile phone is located on the precordium.

Background/further details

A total of 24 healthy volunteers were included. In a first step, electrocardiogram (ECG) and blood pressure recordings of the subjects were performed without mobile phone (baseline). Then, the mobile phone was located on the chest and the ECG and blood pressure were recorded while the mobile phone was off, on, and ringing (silent mode). In a second step, heart rhythm and blood pressure were recorded for 30 minutes without mobile phone, and when the mobile phone was "on" at the precordial location.

Endpoint

effects on the cardiovascular system: hemodynamic (heart rate, blood pressure) and cardiac electrical activity (P wave and QT interval dispersion)

Exposure

- 900–1,800 MHz
- mobile communications
- mobile phone

Exposure	Parameters
Exposure 1: 900–1,800 MHz	SAR: 2 W/kg

Exposure 1

Main characteristics

Frequency	900–1,800 MHz
Type	electromagnetic field

Exposure setup

Exposure source	cellular phone Nokia 2600
Setup	phone placed in a pocket suspended from the neck, placed in the left parasternal area; phone set in silent mode

Parameters

Measurand	Value	Type	Method	Mass	Remarks
SAR	2 W/kg	-	-	-	-

Exposed system:

human
partial body: chest (heart reagion)

Methods Endpoint/measurement parameters/methodology

effects on the cardiovascular system: ECG: heart rate variability, QT interval, P wave dispersion and blood pressure

Investigated system:

investigation on living organism

Investigated organ system:

cardiovascular system

Time of investigation:

before exposure
during exposure

Main outcome of study (acc. to author)

The mobile phone had no effect on hemodynamic and cardiac electrical activity parameters when it was positioned on the chest in immediate proximity to the heart, and it did not cause cardiac autonomic dysfunction (i.e. heart rate variability) in healthy adult subjects.

Study character:

medical/biological study
experimental study
full/main study

Study funded by

not stated/no funding

Ekici B et al. (2016): The effects of the duration of mobile phone use on heart rate variability parameters in healthy subjects
Umar ZU et al. (2014): Effect of mobile phone radiofrequency electromagnetic fields on cardiovascular parameters in apparently healthy individuals
Devasia T et al. (2014): Acute Effect of Mobile Phone on Cardiac Electrical Activity in Healthy Volunteers
Alhusseiny A et al. (2012): Electromagnetic energy radiated from mobile phone alters electrocardiographic records of patients with ischemic heart disease
Colak C et al. (2012): Effects of electromagnetic radiation from 3G mobile phone on heart rate, blood pressure and ECG parameters in rats
Barutcu I et al. (2011): Do Mobile Phones Pose a Potential Risk to Autonomic Modulation of the Heart?
Yilmaz D et al. (2010): Analysis of the mobile phone effect on the heart rate variability by using the largest Lyapunov exponent
Parkar MA et al. (2010): Effect of cell phone exposure on physiologic and hematologic parameters of male medical students of Bijapur (Karnataka) with reference to serum lipid profile
Nam KC et al. (2009): Hypersensitivity to RF fields emitted from CDMA cellular phones: a provocation study
Kim DW et al. (2008): Physiological effects of RF exposure on hypersensitive people by a cell phone
Andrzejak R et al. (2008): The influence of the call with a mobile phone on heart rate variability parameters in healthy volunteers
Barker AT et al. (2007): The effect of GSM and TETRA mobile handset signals on blood pressure, catechol levels and heart rate variability
Kanitz MH et al. (2007): Investigation of protein expression in magnetic field-treated human glioma cells
Nam KC et al. (2006): Effects of RF exposure of teenagers and adults by CDMA cellular phones
Atlasz T et al. (2006): The application of surface plethysmography for heart rate variability analysis after GSM radiofrequency exposure
Mann K et al. (2005): Cardiac Autonomic Activity during Sleep under the Influence of Radiofrequency Electromagnetic Fields
Tahvanainen K et al. (2004): Cellular phone use does not acutely affect blood pressure or heart rate of humans
Braune S et al. (2002): Influence of a radiofrequency electromagnetic field on cardiovascular and hormonal parameters of the autonomic nervous system in healthy individuals
Mann K et al. (1998): No effects of pulsed high-frequency electromagnetic fields on heart rate variability during human sleep