As you may know, HRV values are automatically calculated by the Hexoskin for Rest and Sleep only. If you wish to have HRV calculated in instances other than Rest and Sleep, you will have to export certain Hexoskin returned files into the Kubios software.
Hexoskin automatically provides the interval of time between all the detected heartbeats in the "RR_interval.csv" file. When downloading the data, you might also notice the "NN_interval.csv" file. The NN intervals are based on the valid RR intervals, where unreliable RR intervals are excluded (i.e. "NN_interval.csv" file is cleaned and filtered RR interval data). To calculate HRV in the Kubios software, we strongly recommend using the "RR_interval.csv" file instead of the "NN_interval.csv" file as the software provides an option to filter out the unreliable beats. And because the data in the "NN_interval.csv" file were already cleaned and filtered, you don't want to apply twice the beat correction.
Please proceed with the following:
1. Download HxConvertSourceFile.
You may download the HxConvertSourceFile software here:
With this software, you can fetch and convert a file into the proper format to begin your analysis into Kubios.
Before downloading your Hexoskin data with HxConvertSourceFile, make sure to have the checkbox "User Tab '\t' delimiter (used by Kubios) [default is comma "," delimiter]" ticked under the tab "Convert". Once the file is downloaded, you may retrieve it where it's stored (in the "Execution and logging" window - see below screenshot).
Note: If you are downloading your data (binary format) from the Hexoskin Dashboard, please know that the RR-interval time unit will be in s/256 (i.e. 256 lines of data will be the equivalent of 1 second). To perform HRV analysis in Kubios, you NEED to convert manually the time unit from s/256 to s, as Kubios only supports the time format in seconds (s) or milliseconds (ms). If you don't want to do the conversion manually, please use HxConvertSourceFile. This software will automatically download your .csv files in the proper RR_interval time unit (i.e. in seconds instead of s/256) and it will provide you with your data in .txt format (supported by Kubios software).
2. Download the Kubios software.


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