出版社：National Institute of Occupational Safety and Health
摘要：It is possible that electromagnetic field (EMF) generated by mobile phones (MP) may have an influence on the autonomic nervous system (ANS) and modulates the function of circulatory system. The aim of the study was to estimate the influence of the call with a mobile phone on heart rate variability (HRV) in young healthy people. The time and frequency domain HRV analyses were performed to assess the changes in sympathovagal balance in a group of 32 healthy students with normal electrocardiogram (ECG) and echocardiogram at rest. The frequency domain variables were computed: ultra low frequency (ULF) power, very low frequency (VLF) power, low frequency (LF) power, high frequency (HF) power and LF/HF ratio was determined. ECG Holter monitoring was recorded in standardized conditions: from 08:00 to 09:00 in the morning in a sitting position, within 20 min periods: before the telephone call (period I), during the call with use of mobile phone (period II), and after the telephone call (period III). During 20 min call with a mobile phone time domain parameters such as standard deviation of all normal sinus RR intervals (SDNN [ms] - period I: 73.94±25.02, period II: 91.63±35.99, period III: 75.06±27.62; I-II: p p p p p 2] - period I: 607.97±201.33, period II: 758.28±307.90, period III: 627.09±220.33; I-II: p p 2] - period I: 538.44±290.63, period II: 730.31±445.78, period III: 590.94±301.64; I-II: p p p
关键词：Mobile phone;Heart rate variability (HRV);Electromagnetic field (EMF);Holter monitoring;Autonomic function
