Since December 2017 I have a FR235. I wear it 24/7 so I should get values for my resting heart rate. But these values are junk! My FR35 that I used before gave me realistic values (nearly the same as on my two Fitbit), I could even see my cycle (higher RHR). Now the values are way off. The doctor didn't find anything that I'm ill. Everyday another value, up and down. Much different values on the FR235 and in Connect Mobile. Last night lowest HR 69, but RHR 80? GCM says lowest HR 80... Well, yesterday I did a 5,8km run. Maybe not good one week after the little cold. But even without that I don't know how my FR235 gets the values. RHR is useless for me.
Fitbit and Garmin may be using different methodologies for coming up with your RHR. This is from the Garmin web site:
"Garmin devices that feature an optical heart rate sensor have the ability to calculate a user's resting heart rate (RHR) value on a daily basis. Below is how we determine the value that is displayed for RHR.
RHR: This value is for the current day. It is calculated one of two ways. For users that wear their device while sleeping, the device will read and record the average of all readings while they sleep, excluding periods where any steps were detected or the measured heart rate fall outside reasonable bounds. A minimum of four hours of sleep time is required to register a reading. For users that do not wear their device overnight, RHR is determined as the lowest average reading over a one minute time period during the day.
7-day Average RHR: Some devices will display a 7-day average value which is the daily average resting heart rate over the last seven days. It is a rolling value and does not reset at the beginning of each week. "
But with my FR35 everything was fine, it showed values like my Fitbits. Now with the FR235 it's messed up. Sitting and watching TV at night caused a RHR from 63, after several hours sleeping it showed 68. Lowest HR in the night 61. When I see the graph of the last 7 days it's an up und down. So that the 7 days average changes several beats during the days.
This is not some cheap Chinese fitness bracelet is a really cool device that can not only follow the pulse but also do many other interesting things. I will begin with the fact that the heart rate monitor is very high-quality, did not even expect this accuracy from the wrist model. In the clock, you can set the "corridor" of the optimal pulse for a certain load. For example, I put such a corridor when practicing on the orbitrek and if the hours warn warningly about exceeding the upper limit, I reduce the speed, and if the pulse goes down to the lower limit, then, on the contrary, the intensity should be increased. The second favorite feature, this GPS tracker, which draws the routes of my bike tours, counts distances, speed, and approximate power consumption. Thirdly, during training, he can report on the calls or events of the smartphone. To him, he hops on Bluetooth version 4, which is very economical. Therefore, a few hours of this connection the battery is not put much. It also works as a good pedometer. The screen is black and white with a backlight, but it is only needed in the dark. In the daytime, it is already perfectly visible in reflected light.
Lol my RHR average was 45 over last 12 months sometimes it's showing RHR 35 I am very clear than I am not an Olympian
Not neccessarily - some people have a low RHR naturally. Mine is in the low 40's and I'm 49. Always had a low one. My lowest reading whilst sleeping was 33, but then my wife says I hibernate rather than sleep
But with my FR35 everything was fine, it showed values like my Fitbits. Now with the FR235 it's messed up. Sitting and watching TV at night caused a RHR from 63, after several hours sleeping it showed 68. Lowest HR in the night 61. When I see the graph of the last 7 days it's an up und down. So that the 7 days average changes several beats during the days.
The RHR is calculated statistically so as the day progresses the value may go up and down as the calculation takes into account more data to analyse. A lowest reading doesn't necessarily become the RHR it needs to be a prolonged reading. So you may dip to 61 occasionally but if you spend more time at 68 thats more likely the rhr.
Sleep data is also preferred rather than awake data
Since December 2017 I have a FR235. I wear it 24/7 so I should get values for my resting heart rate. But these values are junk! My FR35 that I used before gave me realistic values (nearly the same as on my two Fitbit), I could even see my cycle (higher RHR). Now the values are way off. The doctor didn't find anything that I'm ill. Everyday another value, up and down. Much different values on the FR235 and in Connect Mobile. Last night lowest HR 69, but RHR 80? GCM says lowest HR 80... Well, yesterday I did a 5,8km run. Maybe not good one week after the little cold. But even without that I don't know how my FR235 gets the values. RHR is useless for me.
I agree with you entirely - the RHR data you get while sleeping are quite simply wrong. The way the FR235 works our the RHR was explained well by "blues Guitar" above, but the main problem is - as discussed in other threads - that the FR235 saves energy overnight by not making too many measurements. This is what leads to the flaky data. My RHR depends most strongly on my heart rate immediately before going to bed, and can be quite high if I have done a long workout that evening. So here's my suggestion: go for an indoor run just before you go to bed but don't! Just leave the device running on that activity while you sleep - and then check your RHR in the morning after you wake and switch off the activity. You'll probably find the battery discharges quite quickly but I bet your data are closer to those you've observed previously.
Mine dropped from values around 65-70 while in sleep mode down to an average of 50-55 when going "night running"!
The point is when runnng an activity the heart rate monitor is continuously on and the RHR is determined from the lowest one-minute average during the night while you sleep.
I find the RHR that the 235 returns, tends to be in the 'right ballpark'. As a 75 year old 'brady cardiac' (HR below 60) with a RHR of around 37-40, the watch gives a reasonable indication of HR.. In the evening when I am sitting watching TV the indications tend to be low 40's. This I have compared to a manual pulse count, and it has been qualified. The only time when the HR is 'WILD', is in the first 10 minutes(approx.) of a run when the weather is very cold and may affect the blood flow to the wrist. I moved away from the TomTom runner because the issue was much worse. The 235 also tends to indicate when a virus is in my system. The HR tends to be higher than expected. So the 235 gives a reasonable indication(except when it 'drops out' below 30BPM.(occasionally). This is after two years two years of daily use. A useful tool!!
I have found that my 235 (and the 735 and 935 before that) all did a very poor job of capturing my RHR which is in the mid 30s. I decided that the OHR is not working for me and in fact I have completely turned it off day to day and just use an HRM-Run chest strap for my workouts. In other words I should have bought a 230 ...
dagl2 - do you wear the watch 24/7 - is not I suspect you might be happy with the results. My issue - and that of the original poster - is connected with the data and the RHR which is calculated if you wear the watch 24/7. As stated above in the post by "blues_guitar" if you wear the watch at night it calculates the RHR by building an average over 4 hours of data. The problem is that the measurements at night are less frequent to save energy. So it seems that the values of RHR are for some users not realistic. Here's some data from last week:
kalamarios - I tried using both devices at the same time - generally speaking the wrist data were in reasonable sgreement with my chest strap but delayed by about 5-10 seconds - the time it takes for a change in pumping speed to reach the extremities? And there seems to be a tendency for the wrist measurements to spike in an unphysical fashion (I don't believe that I can suddenly peak at 220 and then drop down to the 160 which was being more or less constantly observed before. Chest is certainly more reliable but wrist is getting there - albeit slowly!ciq.forums.garmin.com/.../1343477.jpg
