Did my LTHR drop?
2916
Member
1565 days
tri-ac posted 49 weeks ago.
sometimes environmental conditions elevate your HR
also, if you are better trained in one discipline vs another, the HR % correlation may not carry between disciplines
my advice: watch and log your HR, but don't let it determine your pace
412
Member
712 days
SueR posted 49 weeks ago.
the beauty of running is that you can use paces as well as heart rate. I agree with tri-ac (are you a physiologist, tri-ac? You seem right smart-like!) that other things may be going on. Was your testing done indoors? I would use a balance between pacing, RPE, and HR as a way to determine if you are working at an appropriate pace. Good luck!
Some quick background. Last year was my first season and I did a few sprint duathlons with my peak race of a half marathon in the fall. At the start of the season I did a field test and found my LTHR to be 177. Towards the end of the season I did a lab vo2 test and got an LTHR of 181.
Fast forward to this year my peak race is an Olympic distance duathlon. My bike LT (174) feels correct, but when I do a training run the 181 HR zones feel too high; an example is that I must run 5 seconds or more faster than my 10k race pace in order to even hit low zone 4.
I've done 2 10k's so far this year and for both my middle miles had a 177 avg HR. So my question is could my LTHR have decreased? And if so what does this mean?
Sorry for the giant wall of information; thanks.