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HR less than resting HR

fishyweb
over 4 years ago

As can be seen in the screenshot, my HR is frequently less than what GC is saying is my current Resting HR. Surely the Resting HR should be your lowest HR, and thus should be adjusted when current HR goes lower than the currently set Resting HR? 

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  • +1 over 4 years ago

    From Garmin (https://support.garmin.com/en-IE/?faq=F8YKCB4CJd5PG0DR9ICV3A):

    "RHR: This value is for the current day. It is calculated one of two ways. For users that wear their watch while sleeping, the watch will read and record the average of all readings while they sleep, excluding periods where any steps were detected or the measured heart rate falls outside reasonable bounds. A minimum of four hours of sleep time is required to register a reading. For users that do not wear their watch overnight, RHR will be far less accurate and a rough estimate will be determined based on the lowest average reading over a one minute time period during the day."

    In my experience the situation is a little more complex. If your lowest one-minute waking average is lower than the resting heart-rate calculated from your sleep time, the resting heart-rate is updated to the lower value. And I think it's a good thing.

    And I think it's a good thing the watch doesn't blindly take the single lowest recorded heart-rate, since it could easily be an recording anomaly and not a real heart-rate.

  • 0 over 4 years ago in reply to Bitti

    Thanks for that. That certainly sounds like a reasonable strategy, although I'm quite surprised that I get lower HR for quite extended periods when I'm awake. 

  • 0 over 4 years ago in reply to fishyweb

    Perhaps check you are wearing the watch properly? It is quite possible that moving around during the day could cause the watch to slide closer to the wrist bone if it’s a little looser than Garmin recommend.

  • 0 over 4 years ago in reply to Dr Phil

    I'm not doubting the accuracy of the lower readings, I've validated them manually a few times. I like to optimistically think of it being a fair reflection of my fitness level. 

  • 0 over 4 years ago

    I have been frustrated by this behaviour as well, now with my 6X. I don't know if it's the watch to blame or Garmin Connect. RHR is an important metric for judging fitness, recovery, heart rate zones, maybe body battery too, so it needs to reflect reality.

    Here is an example from a few days ago. Shortly after waking (the wake time is correct) I recorded a two minute average of 46 BPM. Either side of that was a two minute average of 47, so that's six minutes with average HR of below 47. Yet by the end of the day GC had fixed on the 53 BPM RHR it had concluded in the morning, based on what? I expected it to adjust at some point, but it never did.

    I reported the behaviour to Garmin and am awaiting a reply.