Garmin

6 lurkers | 224 watchers

SPR Sep 2020 9:24am, 22 Sep 2020 31,576 posts	SPR Larkim - I think that should be a definite given they are different values. What would be interesting is if watches that don't display cycling VO2 Max (like the 245) do the same your watch does for running. It probably doesn't though as cycling VO2 max apparently needs power and the 245 can't do power.
Badger Sep 2020 9:26am, 22 Sep 2020 12,810 posts	Badger SPR, yes I think that's likely. They may well be looking at incoming data now and trying to tune it so that the numbers line up for runners doing a mix of trail and road. Speed versus incline might help to tease out terrain differences for narrow rocky trails versus smooth ones. Not trivial.
Badger Sep 2020 9:27am, 22 Sep 2020 12,811 posts	Badger To 31575 to be clear.
larkim Sep 2020 9:35am, 22 Sep 2020 12,036 posts	larkim 140/29 ostensibly is the running specific vo2max field. But there isn't a field identified by the fit4ruby author which shows the cycling vo2max that I can see from their code.
K5 Gus Sep 2020 9:40am, 22 Sep 2020 4,007 posts	K5 Gus Are you guys saying that the type of activity you chose on the watch, ie Run or Trail Run, affects some of the calculations behind the scenes ? If I've understood you correct, then didn't realise that, can't remember ever reading that, I thought it was just so that you could have different data fields/screens for different types of activities. I do lots of trail running, more so than road running, but I always just choose Run, never Trail Run, as that's the activity I have set up with all the fields I want/need. Does that mean my VO2 Max value shown will be different than if I'd been recording the runs as Run and Trail Run ?
SPR Sep 2020 9:41am, 22 Sep 2020 31,577 posts	SPR If you check user settings on Garmin Connect there's actually a separate field for cycling VO2 MAX. I guess they could in theory use the same field but activity type be the thing that divides it up.
SPR Sep 2020 9:42am, 22 Sep 2020 31,578 posts	SPR Trail run doesn't currently contribute to VO2 Max trend. There seems to be some experiment going on to potentially make it contribute so Runalyze shows a file value but Garmin doesn't use it anywhere yet.
Badger Sep 2020 12:48pm, 22 Sep 2020 12,812 posts	Badger Yes. On the Fenix 3 first software release, Trail Run contributed to VO2max in the same way as Run did. Trail runners complained about this because it made their VO2max look awful. The upshot was that trail runs were just removed completely from the calculations for later software and watches.
StuH Sep 2020 1:21pm, 22 Sep 2020 3,914 posts	StuH Is exclusion from VO2max calculations the only difference with Trail Run? I thought there was something else.
Cog Noscensme AHA Sep 2020 4:13pm, 22 Sep 2020 668 posts	Cog Noscensme AHA Really interesting in so far as I'm able to follow the discussion. Just for my clarity, is there any indication that Garmin has changed the basis of calculation in recent updates for Fenix5? I'm seeing a drop in VO2max and I'm hoping it isn't me 😁