title: Do mobile phones pose a potential risk to autonomic modulation of the heart?
abstract: BACKGROUND
  It has long been speculated that mobile phones may interact with the cardiac devices and thereby cardiovascular system may be a potential target for the electromagnetic fields emitted by the mobile phones. Therefore, the present study was designed to test possible effects of radiofrequency waves emitted by digital mobile phones on cardiac autonomic modulation by short-time heart rate variability (HRV) analysis.
  
  
  RESULTS
  A total of 20 healthy young subjects were included to the study. All participants were rested in supine position at least for 15 minutes on a comfortable bed, and then time and frequency domain HRV parameters were recorded at baseline in supine position for 5 minutes. After completion of baseline records, by using a mobile GSM (Global System for Mobile Communication) phone, HRV parameters were recorded at turned off mode, at turned on mode, and at calling mode over 5 minutes periods for each stage.
  
  
  CONCLUSIONS
  Neither time nor frequency domain HRV parameters altered significantly during off mode compare to their baseline values. Also, neither time nor frequency domain HRV parameters altered significantly during turned on and calling mode compared to their baseline values. Short-time exposure to electromagnetic fields emitted by mobile phone does not affect cardiac autonomic modulation in healthy subjects.
authors.affiliation: Avicenna Hospital Department of Cardiology, Istanbul, Turkey. irfanbarutcu@yahoo.com
authors.forename: Irfan
authors.initials: I
authors.lastname: Barutcu
authors.forename: Ali Metin
authors.initials: AM
authors.lastname: Esen
authors.forename: Dayimi
authors.initials: D
authors.lastname: Kaya
authors.forename: Muhsin
authors.initials: M
authors.lastname: Turkmen
authors.forename: Osman
authors.initials: O
authors.lastname: Karakaya
authors.forename: Mustafa
authors.initials: M
authors.lastname: Saglam
authors.forename: Mehmet
authors.initials: M
authors.lastname: Melek
authors.forename: Ataç
authors.initials: A
authors.lastname: Çelik
authors.forename: Celal
authors.initials: C
authors.lastname: Kilit
authors.forename: Ersel
authors.initials: E
authors.lastname: Onrat
authors.forename: Cevat
authors.initials: C
authors.lastname: Kirma
mesh_terms: D000328:Adult; D001822:Body Burden; D040421:Cell Phone; D004562:Electrocardiography; D006329:Heart Conduction System / Q000502:physiology / Q000528:radiation effects*; D006339:Heart Rate / Q000502:physiology / Q000528:radiation effects*; D006801:Humans; D008297:Male; D008872:Microwaves; D011829:Radiation Dosage; D012016:Reference Values; D018570:Risk Assessment; D014915:Whole-Body Counting