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How reliable is new wrist based power on Garmin Fenix 7

9298883
over 2 years ago

Any good data on how accurate/sensitive/realistic this new metric is compared to using Stryd?

  • 0 over 2 years ago in reply to Bernie

    All settings the same, my weight is also the same, wind consideration on for both runs.  

  • 0 over 2 years ago in reply to tboooe

    Garmin takes the wind from the weather forecast. Can imagine that that gives the different results. 

  • 0 over 2 years ago in reply to Bernie

    And power takes into account horizontal, vertical and lateral power, whereas pace doesn't.

    So it is risky to interpret the variations of the relationship between power and pace outside of very controlled situations. On a treadmill, that is less risky.

    Outdoors, variability of form, terrain, weather get (even more) in the way.

    I understand there is a story about seeing efficiency improvements by comparing some metrics across runs (power, vertical oscillation, stiffness, etc.). I cannot reliably identify these trends because runs are never quite the same.

    I really think that the value is in the real-time reading of power, and the usage of a power-duration curve to set targets, monitor progress, etc.

  • 0 over 2 years ago in reply to Etupes25
    Etupes25 said:

    And power takes into account horizontal, vertical and lateral power, whereas pace doesn't.

    So it is risky to interpret the variations of the relationship between power and pace outside of very controlled situations. On a treadmill, that is less risky.

    Makes sense and i totally get that.  However, I ran the exact same course, at the exact same time in very similar conditions (today was about 5 degrees colder than last week).  

  • 0 over 2 years ago in reply to Etupes25

    I believe Garmin puts more weight into vertical oscillation with their running power and Stryd does not. I believe this was based on what Dcrainmaker was able to find out when Garmin came out with wrist based running power and why they had relied so heavily on the Garmin hrm straps.

  • 0 over 2 years ago in reply to Andrew
    Andrew said:
    I believe Garmin puts more weight into vertical oscillation with their running power and Stryd does not.

    I had consistently more vertical oscillation on this run for whatever reason, yet Garmin power was lower.

  • 0 5 months ago in reply to Etupes25
    Etupes25 said:
    Finally, both vendors use external data (altitude and wind) to account for external forces (gravity and wind resistance) to the result

    I surmise that while Stryd has a port to measure wind, Garmin simply uses an external data, and the latter is totally useless.

    I mean wind is measured like at 5-10 meters height and you run on or at least much closer to the surface of the 3rd stone from the Sun. Or you can run in a forest while wind speed is measured at places there are no objects around etc.

    Apart from wind I like Garmin’s running power pretty much and if I had no Stryd I would not buy it again.

  • 0 5 months ago in reply to Bernie

    Since I switched off wind compensation for my Enduro 2, I get almost the same  watts by my Stryd Wind and my watch excluding max numbers. I mean the averages are within 1%, the actual numbers are the same at steady state or within 1-2%. Max numbers can differ as much as 3-5%.

    And to my biggest surprise my watch is more responsive than my Stryd when I accelerate or decelerate or when I start a hill or finish it.

    Before I forget to mention I use a fake weight in Stryd to compensate for the different magnitude of numbers, and the ratio of this cheat is 1.33-1.34%