Vo2 max

Is the watch new?, it may take a while for it to take a more correct reading. 

A vo2max of 85 seems high, Lance Armstrong that was on several PEDS performance enhancing drugs had 85 in VO2max and in the matemathic it should be in kg, so a lighter person would have higher vo2max but we dont know if Garmin take that in to a count. Lance armstrong at 85 in VO2max had rather low bodyweight and bodyfat 

VO2Max and LTHR/LTHR pace are two different things.

Static calculations don't take into account bodyweight, so I wouldn't pay too much attention to that. VO2Max figures above 75 tend to be the range of professional athletes, so there is reason to be sceptical of those figures. No offence intended - just that it seems very unlikely.

Note that the accuracy of the VO2Max estimate improves if you have an accurate estimate of maxHR - what method did you use to get to 201??

LTHR is generally around 86-92% of maxHR. If your maxHR is 201, then LTHR of 175 sounds pretty feasible. Your LTHR pace does seem low given your 5K pace. you will likely find the accuracy of this prediction improves as you accumulate more than 10 minutes of running on the watch, especially at intensities around LTHR.

85 is WAY  to high. I am running with 3:30/km- so 4.8 min/mile- (for 5k) and i have a vo2max  of 62. 10 minutes is also quite low, the device will also need longer runs to calculate the correct value (also in low hr zones). I am using my  third garmin watch, and vo2max  is consistent and rising with specific training. So everything is looking normal for me by the given data

thanks everyone, yes I'm not suggesting I'm some elite athlete, nor do I believe 85, but seems that it predicting my vo2 max based on 7:56mile@175bmp is completely wrong, when I run much faster and at a much lower HR.

I've had a number of Fenix watches now, this one since the day of release (Fenix 6, 3 months ish....) I run nearly every day and never less than 5k. most days 10k

my may HR is set Automatically and I can reach 201, I regularly push to hit 195 and I know my resting HR of 36 (sometimes lower) isn't normal and makes an impact in the static calculations.

all in all I'm not bothered by it, was just curious why the watch is so far from all other calculations.

I might go and do a professional test out of curiosity. could be fun. 

It is not predicting your VO2Max at 7:56/mile. It predicts VO2Max based on pace and elevation compared with % of HRMax.

LTHR is detected based on the inflection point in Heart Rate Variability typically associated with Lactate Threshold. As above, LTHR seems about right, but the pace is definitely off. More threshold work on level ground will give the watch a better chance of getting the pace right.

Thanks. 

i meant to say vo2 at 53 

LTHR showing miles away from my actual. The watch has around 400 miles on it now and still reads the same. 

although the race pace predictors are pretty accurate 

I don't see anything wrong here. If your best is 7:30 at 5k(or at least the fastest recorded), than 7:50 is your threshold. 5 km is just not very far, you can easily push above threshold for this distance. Same for me, threshold is round about 30 seconds slower than 5 k pace.

I also tested with a doctor and had 61, so I think the watch is accurate.

If you are curious I would try an explicit ftp test (start the training mode on the watch). Maybe it directly changes because of the given effort, or we have more data to "analyze" 

Big difference

Fenix 6x to Polar Beat

Garmin Hrm pro belt

Polar H-10 belt