Hi,
I am using a Vivosport and sometimes get puzzling results with vo2max estimates.
For example, my vo2max decreased from 40 to 35 in the past 10-12 months, corresponding to a decline in fitness age by about 20 years for a 60 year-old. This happened even though my activity level, heart rate, max. heart rate and weight are all basically the same. I typically run at approximately 95-100% of max. heart rate for my age.
So, I now have different vo2max estimates for what looks like the same activity and measurements. Has anyone else experienced this problem and does anyone know why?
Thanks for any inputs or hints.