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Running Dynamic Pod vs. HRM-Pro with Forerunner 945

crazymelki
over 4 years ago

Hi there

In the past, I only used the Running Dynamic Pod while running with my Garmin Edge Forerunner 945. I always had a very good balance of ground contact time. I've bought the HRM-Pro chest strap for a few weeks now and noticed that my values are bad. That means in the ratio 52/48. I then completed the same routes with the same shoes, each with the Running Dynamic Pod and the HRM-Pro, and I don't get the same results. Has anyone had the same experience and which data should I now believe?

Or did I miss a calibration function?

Software on the HRM-Pro is on 7.1

Running Dynamic Pods records:

HRM-PRO records:

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  • 0 over 3 years ago in reply to fxl.briere
    fxl.briere said:
    if arms movements are considered,

    No, it isn't. At least not directly. All the algorithm takes is acceleration data from the sensor which is placed on the torso (HRM-Pro, HRM-Tri, HRM-Run) or on the waist (RD Pod).

    fxl.briere said:
    and if for example looking at the gauge on the watch during the activity has an influence on the result.

    It might, as rasinig your arm and tilting your head could break the natural symmetry of your running stride.

    fxl.briere said:
    Any explaination would be welcome in order to understand and try to improve this metric.

    Are you sure that it needs improvement? Imbalance indicated by a cheap consumer-level device does not necessarily point to a problem. You should consult a specialist, or at least have your running stride analyzed in a proper lab, instead of relying on data from a simple eletronic device. Otherwise you might hurt yourself.

  • 0 over 3 years ago

     I am seeing very similar results.  I have been using the pod actively for a year and got the HRM-PRO strap.  I see a big difference on the treadmill and the road.  Same as your graphs above.  The faster the pace the more the PRO drifts to the right foot.  The pod shows the opposite though I have been able to correct the imbalance over the year.  The cues I have developed work with the PRO to correct imbalance.

    Perhaps the difference is simply being higher on the body and having the upper body factored in versus the Pod.