Publications by authors named "Matti Virtanen"
In this study perceived mental stress during occupational work was compared to heart rate variability (HRV) using a traditional questionnaire and a novel wristop heart rate monitor with related software. The aim was to find HRV parameters useful for mental stress detection. We found the highest correlation between perceived mental stress with the differences between the values of triangular interpolation of rhythm-to-rhythm (RR) interval histogram (TINN) and the root mean square of differences of successive RR intervals (RMSSD) obtained in the morning and during the workday (r=-.
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- The study analyzes the effectiveness of heart rate variability (HRV) from exercise ECG in detecting coronary artery disease (CAD) using data from two patient groups: one with confirmed CAD and one with low likelihood of CAD.
- HRV parameters were calculated during different exercise phases, and while uncorrected HRV showed better diagnostic performance post-exercise, HR-corrected values performed worse.
- Overall, the performance of HRV analysis is considered inadequate compared to traditional ST-segment analysis for CAD detection, suggesting that HRV isn't as reliable for diagnosing the condition.