HRV Heart rate variability in health app what's everyone seeing?

Discussion in 'Apple Watch' started by betabeta, Sep 30, 2017.

  1. betabeta macrumors 6502a

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    Jun 28, 2013
    #1
    So what are people seeing? mine have been all over the place, from 18 to 66, and only getting 3 readings a day at random.

    I hope we can manually take these or at least set times, also looks like it's from a short reading of less than a minute of data.
     
  2. Bob190, Sep 30, 2017
    Last edited: Sep 30, 2017

    Bob190 macrumors 6502

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    #2
    Mine has averaged about 51ms over the past few weeks. Ranged from 21 to 120ms. Would be nice if Apple let us know exactly what the measure was .. I assume it is the RMSSD metric, but would be nice to know for sure.

    I usually get about three readings a day also.

    You can manually take a reading by using the breathing app.
     
  3. deadworlds macrumors 65816

    deadworlds

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    #3
    Taken from the health app.
     

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  4. edhchoe macrumors 6502a

    edhchoe

    Joined:
    Oct 28, 2011
    #4
    This website explains HRV. <---- link.



    Generally, a low HRV (or less variability in the heart beats) indicates that the body is under stress from exercise, psychological events, or other internal or external stressors. Higher HRV (or greater variability between heart beats) usually means that the body has a strong ability to tolerate stress or is strongly recovering from prior accumulated stress.



    The Pros and Cons of Heart Rate
    Pros

    • Easy to measure
    • Can measure during exercise
    • Can target aerobic exercise or specific “zones”
    • No need for extreme accuracy to use it
    • Great gauge of cardiovascular exertion during exercise
    • Vast numbers of devices and wearables of varying quality/accuracy exist
    Cons

    • Limited to mainly measuring cardiovascular activity
    • At rest, heart rate is a vague indicator of internal activity at best and inconsistent at worst
    • Vast numbers of devices and wearables of varying quality/accuracy exist
    The Pros and Cons of Heart Rate Variability
    Pros

    • The most precise non-invasive measurement of Autonomic Nervous System activity (responsible for recovery and the body’s response to stress among other things)
    • Integrates the nervous system, cardiovascular system, and respiratory systems
    • Able to detect physical, digestive, environmental, psychological and other stressors
    • Can be measured by affordable consumer-grade heart rate monitors
    • Only takes 2 minutes per day for 95% of the benefit
    • Can be used to “train” the brain and nervous system to operate at peak performance with live biofeedback
    Cons

    • Difficult to measure during exercise or while moving (though unnecessary usually)
    • Accuracy requirements limit the use of some trendy wearable HR monitors
    • Sometimes presented as a “magic bullet”
    • Various measurements of HRV can be confusing if presented improperly
     
  5. Bob190 macrumors 6502

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    May 21, 2015
    #5
    Unfortunately there are many different ways to calculate the beat to beat measurements. RMSSD is probably the most common, but there is SDNN, SDSD just to name a few. Without knowing what metric Apple uses it is difficult to assess the significance of the reading other than to look for variation over time.

    https://en.m.wikipedia.org/wiki/Heart_rate_variability
     
  6. betabeta thread starter macrumors 6502a

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    Jun 28, 2013
    #6
    Hey thanks, I just used the breathing app and sure enough got a reading, 37, then 61, did it again and just ignored it breathing normally a got 24 so that was interesting, but I just got done a run/workout which lowers HRV.

    Using the breathing app will be great, I'll just ignore deep breathing and breath normal to see what it thinks my HRV is naturally at certain times.

    Says it goes lower under physical and emotional stress, well between working out and actual work and family, I'm under stress pretty much all the time I guess:D. Interestingly enough I get some of my lowest scores sleeping?:confused:
     
  7. betabeta thread starter macrumors 6502a

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    Jun 28, 2013
    #7
    We got some time now, what's everyone averaging a day? I just had a week and these were each day's average 44 44 38 30 33 50 35, that's without using the breathing app. The previous week I used the breathing app a few times a day and those scores pushed the daily average higher. I'm just not convinced in the accuracy, or maybe I'm just really stressed outo_O but the individual lows are sometimes during sleep.

    I do love the monthly and weekly line charts.
     
  8. AidenL macrumors 6502

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    Ireland
  9. Newtons Apple macrumors Core

    Newtons Apple

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    Jacksonville, Florida
    #9
    I have seen anything from 21ms to 42ms. I think the higher the number the better but not too sure about this as any indicator of health.

    I love the charts on all of the heart data. Great improvement from Apple!
     
  10. edhchoe, Oct 11, 2017
    Last edited: Oct 11, 2017

    edhchoe macrumors 6502a

    edhchoe

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    Oct 28, 2011
    #10
    My HRV ranges between 34 and 77 ms.
    I don't do breathing app.

    Today = 40ms

    [​IMG]
     
  11. Zxxv macrumors 68040

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    UK
    #11
    today 90ms
     

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  12. newellj macrumors 604

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    Boston, MA, US
    #12
    I'm averaging 54ms per the Health App. There are various HRV products and apps out there and most of them seem to rely on fairly sophisticated sensors, which I don't believe are natively available to the Health app. I use athlete and my HRV numbers are much higher (greater variability) than the Health app records. OTOH, this number can vary A LOT during the day, so if it's not being taken at a consistent time and in a consistent condition I would guess that numbers would vary a lot.
     
  13. MyAppleWorld macrumors 6502a

    MyAppleWorld

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    Birmingham, UK
    #13
    I don’t know what it all means
    What use is it to anyone?

    A8CE1056-80D3-42B5-8E6E-947C8BC20638.jpeg
     
  14. edhchoe macrumors 6502a

    edhchoe

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    Oct 28, 2011
    #14
    You use it to share it on this thread.
    You did good.
     
  15. Zxxv macrumors 68040

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    UK
    #15
    It tells you how healthy you are. The higher the number the better you are. Like a race horse, or a high power expensive car. If you train and it drops you are less likely to perform at your best. So you wait till the number goes up again and then you can go all out.
     
  16. MyAppleWorld macrumors 6502a

    MyAppleWorld

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    Birmingham, UK
  17. Chacocliff macrumors 6502

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    Oct 22, 2014
    #17
    How can you use this information to increase your fitness? Mine was highest when I was asleep, then dipped following a workout, and has been slowly increasing again during the day.
     

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  18. edhchoe macrumors 6502a

    edhchoe

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    #18
    At rest, a high HRV is generally favorable and a low HRV is unfavorable. When in an active state, lower relative HRV is generally favorable while a high HRV can be unfavorable.
     
  19. philipandrews macrumors member

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    Oct 23, 2011
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    Richmond, VA
    #19
    Just did two mins of breathing and I got 118ms.
     
  20. edhchoe macrumors 6502a

    edhchoe

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    Oct 28, 2011
    #20
    I tried the breathing app for 2 minutes after reading your post.
    While I was breathing, I kept thinking can I beat 118ms?! Can I!??

    I got 67ms... :(
     
  21. risenphoenixkai macrumors regular

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    Oct 14, 2008
    #21
    Lowest I've seen is 17 ms - taken automatically, without the Breathe app, on a day I trained very hard while simultaneously feeling rather ill from the latest office plague.

    Highest I've seen is 156 ms - taken using the Breathe app, on a rest day, during a week off from training.
     
  22. betabeta thread starter macrumors 6502a

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    #22
    Well, I must be having some anxiety when sleeping:eek: my lowest are almost always sleeping. But overall, mine are increasing with more practicing with deep breathing. Glad to know it drops after workout, I just ran and for some reason it did a reading and it was 23.

    I think shallow breathers have lower scores, I notice sometimes my chest or diaphragm are barely moving. I'm a very shallow breather, so this is great if it helps me learn to breath deeper.

    I'm jealous to see these scores over 100, my best is 80 and that is with the breathing app!
     
  23. newellj, Oct 12, 2017
    Last edited: Oct 12, 2017

    newellj macrumors 604

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  24. Meebooh macrumors newbie

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    Oct 16, 2017
    #24
    I also have questions with the HRv values.

    in rest i have a HRV of 50MS. when using the breathing app twice, i got an HRV of 184 MS

    i don't know how to interpretate this numbers. is this good or bad?
     
  25. newellj macrumors 604

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    Oct 15, 2014
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    Boston, MA, US
    #25
    It's counterintuitive, but higher numbers (*more* variability) is better.
     

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