Related Experiment Video
Updated: May 11, 2026
08:12
Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
Nonlinear heart rate variability measures under electromagnetic fields produced by GSM cellular phones
Marta Parazzini1, Paolo Ravazzani, György Thuroczy
1Consiglio Nazionale delle Ricerche, Istituto di Ingegneria Biomedica ISIB CNR, Milan, Italy. marta.parazzini@polimi.it
Electromagnetic Biology and Medicine
|May 17, 2013
Summary
This study found that exposure to GSM electromagnetic fields (EMFs) did not significantly alter heart rate variability (HRV) dynamics in healthy young adults. Autonomic nervous system responses to a rest-to-stand test remained unaffected by EMF exposure.
Area of Science:
- Cardiology
- Biophysics
- Electromagnetism
Background:
- Heart rate variability (HRV) reflects autonomic nervous system function.
- Electromagnetic fields (EMFs) from mobile phones raise health concerns.
- Nonlinear dynamics offer insights into complex physiological systems like HRV.
Purpose of the Study:
- To investigate the impact of GSM EMF exposure on the nonlinear dynamics of HRV.
- To assess autonomic nervous system responses during a rest-to-stand protocol under EMF exposure.
- To determine if low-intensity EMFs affect physiological regulatory mechanisms.
Main Methods:
- A double-blind, sham-controlled study involving 26 healthy young volunteers.
- Rest-to-stand protocol to evaluate autonomic nervous system activity.
- Analysis of RR series using nonlinear deterministic techniques during genuine and sham EMF exposure.
Main Results:
- No statistically significant differences were observed in HRV nonlinear dynamics.
- GSM EMF exposure did not alter vagal or sympathetic prevalence during the protocol.
- The nonlinear analysis of RR series showed no effect of EMFs.
Conclusions:
- Low-intensity GSM EMF exposure does not significantly affect the nonlinear dynamics of heart rate variability.
- Autonomic nervous system function, as assessed by HRV, is not demonstrably altered by GSM EMFs in this study.
- Further research may explore different EMF parameters or populations.
Related Concept Videos
01:26Applications of EMF Measurements
Electromotive force (EMF) measurements have a broad range of applications in various fields, including chemistry and physics. The electrochemical series, an arrangement of elements in order of their standard electrode potentials, can be determined through EMF measurements. Elements with lower standard potentials can reduce ions of elements with higher standard potentials.The standard cell potential, E°, allows for the calculation of the standard reaction Gibbs energy, ΔG°, and the equilibrium...
01:29Electrocardiogram
An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
01:30Pulse rhythm
Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
01:30Factors Influencing Heart Rate
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
01:23Holter Monitor: 24-Hour Monitoring
Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
01:25Correlation between ECG and Cardiac Cycle
The electrical signals recorded on an electrocardiogram (ECG) occur before the mechanical processes of contraction and relaxation during the cardiac cycle.
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...
A cardiac action potential originates in the SA node and spreads throughout the atria and the AV node in approximately 0.03 seconds. This results in the P wave in an ECG and triggers atrial contraction. The action potential is then briefly slowed at the AV node, allowing the atria to contract and fill the ventricles with blood before...