VO2max estimate and race predictions
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VO2max estimate on SV is broken.
In August I did two 10k races a week apart from eachother, the first one was more of a practice run and I didn’t go all out but managed to get a decent time of 36’46" according to GPS, It was a relay of 10.55k and no timesplit on the route at 10k, SV measured the whole race at 10.70k, so in reality a bit slower time at 10k.
Before that first race SV gave me a VO2max of 60.4 and 10k prediction at 36’43".
After the race SV updated my VO2max to be 59.3. Now this is confusing since on the race stats page on SA on that race the estimated VO2max was the previous 60.4.Fast forward a week from that I manage to run a road 10k at 35’41" (SV actually measured the distance at 10.15km so even faster time was logged to the watch. SV VO2max before the race was about 59.0~ and AFTER that race, SV gave me a 10k prediction of 37’31". For the race stats itself, the estimate was 59.0.
A month later did yet another 10k race logging a time under 36’. Still my watch shows my prediction for that distance to be 37’20"…
My question is why doesn’t the watch just update the prediction to match AT LEAST match my current race time…? I think that should be a bare minimum. I don’t really care what the VO2max estimate is, just for the race time estimates to at least match what I have raced. As a sidenote seems that SV GPS is off in all of those three races, i regularly get 10.2km or 10.15km on officially measured road races, makes following the pace from my watch quite difficult.
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@localful The race prediction is just from a table based on VO2MAX as far as I know and doesn’t count your “real” runs. If thats good or not is hard to say, but for you it seems pretty accurate.
Edit: And the 10.2km seem very good to me. Its just 2% off and normally you are not able to run the perfect line. Seems to be also a really accurate GPS
Edit2: You can use the snap to route feature if you have the gpx track of the race. This should give you even more accurate measurings
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@localful No comment on the VO2max but regarding the length of the race vs the gps you have to remember you are unlikely to have taken the ‘racing line’ for the entire race and will have been dodging other people which does all add up so it’s very common for your watch to report you’ve run slightly longer than the official race distance. Even officially measured races also have a tolerance so are themselves unlikely to be bang on the stated distance
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@far-blue
I think it’s mostly just gps measuring more than the actual distance, this happens to me also during track workouts, when I know exactly how mant laps I’ve done. Additionally, people who have done the same races as me always get a more accurate distance (closer to 10k). In those particular races I’ve had the pleasure of running in small groups at the front, taking the shortest route possible and doing perfect cornerings. I guess the main downside is that following pace from gps is useless if ur trying to hit a specific time. -
@localful I pretty much always run using a stryd footpod as I find the instant pace data more accurate, especially for intervals. I don’t generally find over a race such as 10k there is much disagreement between the stryd and GPS but summer races with lots of tree cover and trail races have more disagreement (just like in training)