International Journal of Physiology

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Spectral Analysis of Heart Rate Variability During Mobile Phone Usage in First Year Medical Students


Affiliations
1 Department of Physiology, KMCH Institute of Health Science and Research, Coimbatore, India
2 Coimbatore, India
3 KMCH Institute of Health Science and Research, Coimbatore, India
4 Department of Community Medicine, KMCH Institute of Health Science and Research, Coimbatore, India
     

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Background: The electromagnetic radiations emitted by cellular telephones may influence the autonomic tone which modifies the functioning of the circulatory system.

Aim and Objectives: To estimate the effect of using mobile phones on heart rate variability (HRV) in first year medical students.

Method: ECG and HRV parameters are recorded in three periods, - when the subject is at rest without mobile phone (Period-I), with mobile phone kept on the left chest (Period-II) and when responding to a call by keeping the mobile over his right ear (Period-III) on 100 healthy subjects aged between 18 and 21 years of either sex.

Results:When the mobile was kept on chest or while attending a call,a decrease in high frequency (HF) in normalized units and increase in low frequency (LF) in normalized units and increase in the ratio of LF to HF (LF/HF) was observed in the frequency domain measures. Decrease in RR intervals, RMSSD and NN50 was observed in the time domain measures

Conclusion: The participants showed a higher sympathetic tone and a lower parasympathetic tone while attending a call. The study proved the intense effects of handset radiofrequency radiations on autonomic balance in healthy subjects.


Keywords

Heart Rate Variability, Electromagnetic Radiations, Mobile Phone Usage.
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  • Spectral Analysis of Heart Rate Variability During Mobile Phone Usage in First Year Medical Students

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Authors

Rekha
Department of Physiology, KMCH Institute of Health Science and Research, Coimbatore, India
Rashmi Ramanathan
Department of Physiology, KMCH Institute of Health Science and Research, Coimbatore, India
Jensy Sekar
Coimbatore, India
Ram Mohan
KMCH Institute of Health Science and Research, Coimbatore, India
Kalpaka
KMCH Institute of Health Science and Research, Coimbatore, India
S. Jeevithan
Department of Community Medicine, KMCH Institute of Health Science and Research, Coimbatore, India

Abstract


Background: The electromagnetic radiations emitted by cellular telephones may influence the autonomic tone which modifies the functioning of the circulatory system.

Aim and Objectives: To estimate the effect of using mobile phones on heart rate variability (HRV) in first year medical students.

Method: ECG and HRV parameters are recorded in three periods, - when the subject is at rest without mobile phone (Period-I), with mobile phone kept on the left chest (Period-II) and when responding to a call by keeping the mobile over his right ear (Period-III) on 100 healthy subjects aged between 18 and 21 years of either sex.

Results:When the mobile was kept on chest or while attending a call,a decrease in high frequency (HF) in normalized units and increase in low frequency (LF) in normalized units and increase in the ratio of LF to HF (LF/HF) was observed in the frequency domain measures. Decrease in RR intervals, RMSSD and NN50 was observed in the time domain measures

Conclusion: The participants showed a higher sympathetic tone and a lower parasympathetic tone while attending a call. The study proved the intense effects of handset radiofrequency radiations on autonomic balance in healthy subjects.


Keywords


Heart Rate Variability, Electromagnetic Radiations, Mobile Phone Usage.

References