Essential reading: Wearables that come with an ECG sensor
The gadget goes further than most other home ECG monitors, in that it offers more detailed analysis of your ECG including irregularities in the ventricular department and not only in the atrial activities. And it does this with 98.7% accuracy, allowing you to monitor for potential arrhythmias and risks of stroke and sudden cardiac arrest risk. In our review we found it works very well and we gave it an excellent 8.3 rating.
There are also some extras such as SpO2 measurements and the ability to count steps if you carry the credit sized device in your pocket. We can now heart rate variability (HRV) to this list. It came courtesy of a firmware update earlier today.
Put simply, HRV measures the variation in the time interval between heartbeats. The higher the value, the better. The figure is influenced by age, fitness status, stress and cardiovascular diseases.
Devices with the ability to churn out raw HRV statistics are few and far between. Polar Ignite and the Vantage range can, along with some heart rate chest straps and a few other wearables.
WIWE users will now see a new line-bar after they do a typical 60 second ECG measurement. The bar shows their HRV on a sliding scale. All of this is color coded for easy understanding.
To simplify things further, the Hungarian outfit has decided to grade your result into one of five levels. Grade 1 is when your HRV score is low. This refers to poor state of fitness or readiness for action. Best to take it easy that day. Grade 2 is below normal, grade 3 normal, grade 4 above normal and grade 5 is high.
Users can also access a chart with their heart rate values that shows SDNN (ms), RMSSD (ms) and PNN50 (%) values. All of these are used to calculate the HRV assessment.
In case you are interested, the first is the mean difference of all intervals between heart beats, the second is the square root of the total of the differences in the sequential series of the intervals between heart beats. The final is the percentage ratio of neighboring NN distances where the distance is at least 50ms.
The update is a very welcome one. Those that regularly measure their ECG and SpO2 in the morning with WIWE will be happy to know they can now keep tabs on another important health indicator. For more information about WIWE, check out our full review on this link.
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