Some fitness trackers may detect signs of heart disease, sleep problems, and chronic stress. However, there are limitations and risks to consider.

Abstract: Most studies indicate that bimodal emotion recognition systems are more objective and accurate. However, many of these systems depend on physiological signals that require direct measurement ...

This executive summary provides an overview of the 2025 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care, which is organized around the Utstein ...

Dear Dr. Roach: My heart rate variability (HRV) on my heart rate tracker has ranged from 12-14 ms for years now. I read that this means something is going on inside me. Do you have any insight into ...

Dear Dr. Roach: My heart rate variability (HRV) on my heart rate tracker has ranged from 12-14 ms for years now. I read that this means something is going on inside me. Do you have any insight into ...

Runners, cyclists and gym-goers with wearable fitness trackers are no doubt familiar with the five "heart rate" zones. Ranging from low to very high intensity, these zones are calculated as ...

We may earn a commission from links on this page. Deal pricing and availability subject to change after time of publication. While most fitness watches and other devices (like smart rings) can measure ...

Abstract: Monitoring respiratory rate variability (RRV) via smartphone microphones represents a significant opportunity for accessible digital health. However, extracting clean respiratory signals ...

We sought to investigate the association between circulating inflammatory and cardiovascular proteomics biomarkers and cardiac autonomic nervous dysfunction–sensitive heart rate variability indices. C ...

Most runners can benefit from monitoring heart rate in different ways during half marathon training. For example, you can use heart rate to set training zones, which will help you dial into the right ...