I took some time to see if the log transformed rMSSD gives similar results as the raw rMSSD. There’s no difference for daily values, baseline and normal range. But the absolute value of the CV% is impacted significantly, and that can be important.
I created a new Wellness field to register the 20 x Ln(rMSSD) and use that for the HRV Fitness chart now. I’m populating that field from the script that I run for all my wellness fields. You could create a similar field and ask @Inigo_Tolosa to populate it like he does for the Training Advice field. He just needs to add a line to the MatLab code that sends 20 x Ln(rMSSD) to that new Wellness field.
