Hi, I am seeing that my heartrate (per effort) is lower than ever.
History- 58 year old male, former cat 1 amateur, have ridden and trained steady for a good 30 years. Still train with intensity and do a couple gravel events per year.
I have notice a very low heartrate. A couple days ago I did 4x7 fairly hard (103% above FTP). Ave HR 130-133. max HR 140-143. Yesterday I did 3x15 min ~88% FTP. HR never got over 125.
I would say these values are 5-8 beats less than I would expect. This has been a trend, not a one-off.
Should I just adjust my HR expectations by that 5-8 beats? Or should I perform a ramp test to try to pinpoint HR?