The answer to this varies based on your hardware (and has almost nothing to do with the app). That being said, the Elite HRV app is designed to remain connected as long as you are within signal range (even if some heart beats are dropped due to distance).
The rolling average time interval (i.e. 30s) controls the sample frequency of the rolling average for the chart lines that are labeled “Rolling Avg”.
Our HRV score process is broken down as follows:
Multiple readings taken in a row can sometimes produce different results. Here are a few reasons this can happen.
Baroreceptors, which are the body’s natural blood pressure sensors located in the aortic arch and internal carotid arteries, contribute to Heart Rate Variability. When you inhale, heart rate increases.
Our HRV score is calculated from the RMSSD and represents the strength of your Autonomic Nervous System (specifically the Parasympathetic branch) at a given time. The other numbers provided are for reference for those interested in in more detailed analysis of their HRV data.
Basic Heart Rate Variability (HRV) is the measured changes of the time intervals between successive heart beats. Unlike Heart Rate (HR) that averages the number of heart beats per minute, HRV looks much closer at the small fluctuations of the heart that occur in response to internal and external events.
Elite HRV has built in breathing guides that allows you to use your respiratory system to gain control over your cardiovascular system and nervous system and track the effects.
The Elite HRV app is free for iOS and Android! You can get the app here for iOS or Android.
At this time most available wrist band monitors, watches, and finger sensors that use Pulse Oximetry, LED, or light-based sensors to detect heart rate do not accurately measure (or do not support) R-R intervals.
Do to the number of heart rate monitors available on the market, we can’t feasibly test them all.
The Elite HRV app can be found on both Google Play and the Apple App Store. If your phone or tablet supports Bluetooth 4.0, and has either Android 4.3+ or iOS 7+, then it is likely compatible with Elite HRV.
Research standardized calculations such as RMSSD can still appear slightly different between systems. This could be due to differences in hardware (heart rate monitors, etc.). But it is usually due to differences in the way misreads and signal noise are handled.