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Predicted race times

Kalmer

Has anyone else noticed that other activities (like walking or swimming) change predicted running race times a lot? For me its way more than any of my training runs. Today 2.5km slow walk with family boosted all my race predictor times over 2 minutes.

Does anyone have some good explanation why is that so? On my old forerunner 745 i dont remember that issue..

  • 0

    i think this is a bug in Garmin's system but it has existed before the 955. what's happening is your VO2max is being adjusted by the walk so that adjusts your race predictor. if you look at your data in Runalyze you will see your swims and runs momentarily adjusting your V02max (it's what RA calls VO2max file).

    i contacted Garmin about it and they noted that the V02max reported/stored is an overall one that is biased towards running but affected by other activities. there is a separate Bike VO2max.

    the only concession they made is i could send a feature request to Garmin to raise this issue:

    www.garmin.com/ideas

    i think it's pretty lame, but it seems that things get back into sync quickly after i run again.

  • 0 in reply to derek87

    I'm not sure about that. Garmin says it needs atleast 10min continous heart rate 70% of max HR or above for vo2max to be calculated. Walking shouldnt count because my HR was way below 70% whole time. Even runalyze doesnt show any vo2max for walking activities. 

    955 somehow evaluates cross-training way more than 745. Probably its a bug. 

  • 0 in reply to Kalmer

    in Runanalyze, you need to change your settings to show the "file VO2max" so it will extract the VO2max from your FIT file. (click on the Gear icon on the top pane and you can check "VO2max (by file)"

    i agree it shouldn't work this way, but i already argued with Garmin and didn't make any progress. 

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