Resting Heart Rate on Charge HR

Tigs2614

Hi, could someone please explain the resting heart rate on Charge HR?

Mine is always between 90 and 93 which appears very inaccurate because when I am awake and still in bed it is 72bpm. I have it on all day sync and for example, I synced it this morning and it said 90bpm, did some washing, folding, putting away folding and getting the kids ready for school. Over an hour later, my resting heart rate changed from 90 to 93 for the day?

I don't believe this is a true reflection as I can be sitting at my desk working and get 72bpm on average. I'm completely confused. All I do is wear my watch to bed and not press anything. I have tried the "begin sleep" and then "I'm awake" and the same thing happens?

NancyN795

All I can figure out is that Fitbit's definition of "resting heart rate" - and their algorithm for calculating it - is different from my understanding of resting heart rate.

My understanding is that it is your heart rate when awake and not moving much. I take my blood pressure every morning - at that point I am awake, sitting up, not moving much, haven't eaten or exercised recently. My heart rate at that time - measured by my blood pressure monitor and my Fitbit - is almost always in the range of 47-50. I would think that would be my resting heart rate.

The lowest that Fitbit has ever given me for resting heart rate is 54, and usually closer to 60, or higher. So, at least 10 BPM too high. It frustrates me.

heybales

That's interesting to know.

Because I'm sure they are using the same public study that Polar uses to estimate VO2max, which uses BMI and resting HR and gender/age, and athlete level based on amount of exercise done weekly.
And VO2max is used in calculating calorie burn.

Now, a difference of 10 bpm for resting is only about 10 calories at a pretty intense workout for 60 min - but still, I'd think they'd grab the restingHR for what shows at the end of sleep.

Do they attempt to show the deep, light, and REM sleep patterns? End of deep should be best time.
And that would allow seeing if fitness is improving, about to get sick, overdoing it, ect.

NancyN795

The sleep tracking could be more informative. It shows when and how often you were restless and/or awake and gives a "sleep efficiency" percentage. I wish it showed things like deep, light and REM. Here's what I can get for last night's sleep. (Not what I'd call a great night's sleep.):




I have found that I get a 5-10 BPM lower Resting Heart Rate value if I take my Fitbit off as soon as I start to wake up and don't put it on until I get dressed. My morning routine between those times apparently confuses the algorithm. If I don't do that, it gives me a RHR of the mid to upper 60s. Reviewing several nights' data shows me that my lowest heart rate at night is generally in the mid to upper 40s range - so about what I get when I take my blood pressure readings in the morning. (I take blood pressure medication, but not one that lowers heart rate.)

Tigs2614

Thanks for that tip Nancy I'm going to try taking my watch off also. Mine is weird it's around 20bpm more than when I'm laying in awake. I'm not paying it much attention anymore because it doesn't take it at rest for sure. I'll post if it made a difference by taking it off.

NancyN795

My morning routine is a little atypical. I don't have to get up at any particular time and I frequently get up briefly and then get back in bed for a little while. Maybe if my routine were more typical - wake to an alarm, get up, shower, dress, etc. - then I wouldn't need to take it off every morning.