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24/7 HR Sampling

I thought I'll put that topic in an own thread. Many people have the perception that Garmin reduced the HR sampling frquency as of FW 3.20. And to many this topic seems very important, yet so much 24/7 HR was one of the main reasons to get that watch.

Discussion about this started in the FW 3.20 thread around here: https://forums.garmin.com/showthread.php?337137-FR235-Firmware-updates-v3-20-and-v2-30-quot-Sensor-Hub-quot-(2015-12-09)&p=770858#post770858

My last post there about this was: https://forums.garmin.com/showthread.php?337137-FR235-Firmware-updates-v3-20-and-v2-30-quot-Sensor-Hub-quot-(2015-12-09)&p=771434#post771434

I will post my upcoming findings about this topic here from now on.

The first "result" I might have found: When moving around continiously the HR is read every 10 minutes.

From the last two nights of sleep I would guess so far, that when not moving much HR is being read about twice an hour. I suppose Garmin has implemented some algorythm that reduce "time to next sample" based on movements/steps being registered.

Note that this is just what I see my watch is doing, me registering time and step count when a reading happens.

After I stopped moving around, the next reading came 20 mins later, having made 60 steps in between.

Please feel welcome to post your own findings, graphs etc about allday HR here...

0 Former Member over 9 years ago

Well rest assured they're going to have to do something about the HR sampling frequency because it's significantly effecting everyone's calorie estimation. Many threads on this now.

0 Former Member over 9 years ago

HR apps on iq store have 24/7 sampling

Hi. Not sure if this has been covered already but some apps on the garmin iq store enable 24/7 sampling. Such as: heartalarm, domipulse2.. it does take a toll on battery life though as one would expect: approx 36hrs

After playing around with the .fit file within the "Monitor" subfolder of the Garmin device prior to synch I noticed that it records the average bpm within each minute which it then will display on the graph on your daily hear rate graph within garmin connect. So it seems HR recording for each second is only possible in a certain activity (run/cycle/other) mode.

Regarding the Fitbit tracker I find them totally unpractical with the lack of waterproof feature. I tried them for 1 month but taking it on and off before/after bath plus the charging drove me nuts. I will start looking at them once they make their devices 50m water resistant which any $10 wearable provides during the era of waterproof cameras and mobile phones.