Garmin

4 lurkers | 224 watchers

StuH Nov 2020 9:11pm, 22 Nov 2020 4,033 posts	StuH I don't see HRV data in Runalyze when not using a strap with my Fenix 5 Here Gobi: runalyze.com Stats, stats and more stats!
SPR Nov 2020 10:06pm, 22 Nov 2020 32,223 posts	SPR I think the optical HRV on the watches works when not exercising. That fits with what DVR says about the Scosche Rhythm 24 only doing HRV at rest.
Sam Jelfs Nov 2020 10:32pm, 22 Nov 2020 804 posts	Sam Jelfs Hrv, at least as a stress metric, only makes sense when at rest.
Gobi Nov 2020 4:46am, 23 Nov 2020 72,092 posts	Gobi Oh will have a play at some point
The_Saint Nov 2020 11:10am, 26 Nov 2020 6,661 posts	The_Saint The PhD student I mentioned was doing his PhD specifically on the sympathetic and parasympathetic nervous system which is why I asked him if he had considered using HRV among the battery of tests he was using on volunteers such as myself to discover whether serious runners in their 50s and 60s keep their nervous systems "young" (simplistically) compared to sedentary people of the same age. I think you can guess the answer. Anyway his response to my question was pretty much that the results would be exceedingly hard to do anything with as pretty much all that is known is more variation = more betterer. So in summary it is all very interesting, but what does it tell you about your running? If the reply is to use the bogus stress thing to indicate when you should run, I would be running twice a week max, which is silly. I would honestly put as much faith in a horoscope.
flanker Nov 2020 1:44pm, 26 Nov 2020 19,577 posts	flanker I think it's value is in relative values rather than absolute, and per person, not inter-person. It provides a trend that should allow you to monitor your own condition and so gauge training intensity.
Cog Noscensme AHA Nov 2020 2:22pm, 26 Nov 2020 684 posts	Cog Noscensme AHA How does Garmin define the parameters for an RHR estimate? Presumably it's not just a single data point.
chunkywizard Nov 2020 3:43pm, 26 Nov 2020 10,553 posts	chunkywizard I believe it constantly monitors HR throughout the day and averages the low points.
Sam Jelfs Nov 2020 9:00am, 27 Nov 2020 809 posts	Sam Jelfs Not sure on Garmin, but there is some information on how fitbit does it in this paper, and I would guess Garmin are broadly the same. medrxiv.org In previous ECG-based studies, I have just taken the lowest 5% mark of the HR as a rough indicator.
Badger Nov 2020 10:50am, 27 Nov 2020 13,062 posts	Badger If you wear it overnight, it's based on an average of sleep time, leaving out obvious waking period. If not it is something like the lowest 10 minute running average in the day, so it won't say 25 if the ohr glitches and misses a few beats. I could probably source that with s bit more time to spare than I have right now.