I’ve noticed that when I train based on power, my HR readings are always completely at odds to my power data. I’ve tried including a could of screenshots. My HR zones are pretty accurate as I’ve been training based on HR for a long time for running and I use a new garmin HR strap, so I think the data is good.
Can anyone explain this difference? And whether I should be training closer to my HR zones than my power zones.
Since you have power I’d ignore HR other than a curiosity as HR is such a fickle thing. If I look back in my records I’ll probably find rides when HR and Power closely aligns but on other rides they’ll be vastly different. There is an argument though if you are doing a Z2 type ride or below you should limit yourself by your Z2 HR (assuming your zones are set up correctly) and for workouts higher zoned than that use power.
Thank you @HLaB and @WindWarrior. That’s helpful. The main reason I’d been looking at it is I don’t have a power meter on my bike, just my turbo trainer, so I have to use HR when I’m out on the road. Not ideal, but next step is probably to get a power meter for the bike so I can be consistent indoors and outdoors. Thank you again
Then you could check how the zones from the test align when you do indoor training at sweet spot, threshold, …
They may not align perfectly. For me it matched surprisingly pretty good and what I expected from pre-power meter.
Now you have some idea of how to use HR outside. Note you still have all the problems of HR training (other things than power output affect your HR - heat, bad night sleep, …)
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