Due to a lack of financial resources, we unfortunately have to suspend the import of new articles regarding radio frequency and mobile communications as of now (November 27, 2017). If you have found the EMF-Portal useful and wish to support us, we will be very happy to accept your donation.

DONATION ACCOUNT: Uniklinik RWTH Aachen, IBAN: DE27 3905 0000 0013 0040 15, BIC: AACSDE33, Reference: GB-FM/380454/Arbm

More information →

Home
Medical/biological study (observational study)

The effects of the duration of mobile phone use on heart rate variability parameters in healthy subjects.

Published in: Anatol J Cardiol 2016; 16 (11): 833-838

Aim of study (acc. to author)

The influence of the duration of mobile phone use on heart rate variability should be investigated.
Background/further details: From a total of 251 healthy volunteers recruited from the hospital staff, 148 subjects (85 women and 63 men) were included in the study. The inclusion criteria were age >18 years, an interference-free 24-h ECG and the volunteer's consent. Subjects were divided into 4 groups according to the duration of mobile phone use: 1) < 30 minutes/day (n=37), 2) 30 - 60 minutes/day (n=37), 3) > 60 minutes/day (n=39), 4) no mobile phone use (control group; n=35). All participants (except for the control group) had been using mobile phones for > 10 years prior to the study.

Endpoint

Exposure

Exposure Parameters
Exposure 1:
  • unspecified
Exposure duration: < 30 minutes/day of mobile phone use
-
Exposure 2:
  • unspecified
Exposure duration: 30-60 minutes/day of mobile phone use
-
Exposure 3:
  • unspecified
Exposure duration: > 60 minutes/day of mobile phone use
-
Exposure 1
Main characteristics
Frequency
  • unspecified
Type
Exposure duration < 30 minutes/day of mobile phone use
Exposure setup
Exposure source
Setup daily durations of mobile phone use were calculated automatically by dividing the total duration of calls (total minutes within a month) into the number of telephone calls (total number within a month)
Parameters
No parameters are specified for this exposure.
Exposure 2
Main characteristics
Frequency
  • unspecified
Type
Exposure duration 30-60 minutes/day of mobile phone use
Exposure setup
Exposure source
Parameters
No parameters are specified for this exposure.
Exposure 3
Main characteristics
Frequency
  • unspecified
Type
Exposure duration > 60 minutes/day of mobile phone use
Exposure setup
Exposure source
Parameters
No parameters are specified for this exposure.
Exposed system:

Methods Endpoint/measurement parameters/methodology

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

Main outcome of study (acc. to author)

After adjustment for age, sex and BMI, only the LF/HF ratio of heart rate variability was significantly increased in the exposure groups (groups 1-3) compared to the control group (remark EMF-Portal: for other parameters, significance after statistical adjustment was not mentioned).
The authors conclude that long-term mobile phone use might influence the heart rate variability.
Study character:

Study funded by

  • not stated/no funding

Comments on this article

Related articles