A compact ECG R-R interval, respiration and activity recording system

Area of Science:

• Biomedical Engineering
• Physiological Monitoring
• Wearable Technology

Background:

• Variability in heart rate and respiratory frequency provides insights into physiological status.
• Monitoring these parameters during daily life requires unobtrusive and portable recording systems.

Purpose of the Study:

• To develop and describe a novel recording system for continuous monitoring of ECG R-R intervals, respiration, and activity.
• To enable the assessment of heart rate and respiratory frequency variability during everyday activities.

Main Methods:

• The system utilizes three ECG chest electrodes to detect R-R intervals and respiration.
• An accelerometer measures physical activity, distinguishing between walking and running.
• A low-power microcomputer and EEPROM store recorded data for subsequent analysis on a desktop computer.

Main Results:

• The developed system successfully records ECG R-R intervals and respiration data.
• Activity levels, including walking and running, are quantified using accelerometer data.
• Collected physiological and activity data are stored and downloadable for detailed analysis.

Conclusions:

• A portable and effective system for monitoring heart rate and respiratory variability during daily life has been developed.
• The integration of ECG and accelerometer data allows for comprehensive physiological and activity assessment.
• This technology facilitates long-term health monitoring and research into daily life physiological responses.