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From Fellrnr.com, Running tips
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|[[File:Stryd Comparison (1).jpg|none|thumb|250px|Here's a visual comparison with some other Footpod's. From top left to bottom right there is the Stryd, Garmin Footpod, [[MilestonePod]] v3, Polar Stryd Sensor, Adidas, and [[MilestonePod]] v2.]]
|[[File:Stryd Comparison (23).jpg|none|thumb|250px|This is a view of the Stryd and Garmin Footpods with their cradle to clip into the shoe laces.]]
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|[[File:Stryd Comparison (32).jpg|none|thumb|250px|Looking sideways you can see the Stryd and Garmin Footpods have similar openings for shoe laces.]]
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=Watch Integration=
I tested the distant accuracy of the Stryd using the same basic methodology as I do for my [[GPS Accuracy]] testing. (See [[GPS Testing Methodology]] for details.) I used a [[Polar M400]] configured to use the distance from the Stryd footpod. As you can see from the results, the Stryd is remarkably accurate, far better than any GPS device I've tested. My testing of pace is more anecdotal, but I've been able to hit my target paces using guidance from my Stryd. I've tested using a range of paces from 10:00 min/mile to 6:30 min/mile and the Stryd allows me to cover a given distance in just the right time.
[[File:GPS Accuracy.png|center|thumb|800px|An infographic of the accuracy of the GPS running watches. The top right corner represents the most accurate watches. (This graphic uses ISO 5725 terminology.)]]
=Treadmill Problems=
The Stryd is so accurate outdoors, I couldn't understand why it was so bad on a treadmill. To my chagrin, I discovered that the Stryd Footpod was right, and my treadmill was wrong. Accurately calibrating a treadmill proves to be rather more complex than I'd have expected, as the treadmill will slow down when your foot is in contact with the belt, then speed up when you're in the air. For details on how to evaluate your treadmill have a read of [[Treadmill Calibration]].
=Testing Running Power=
I don't view Stryd as a "power meter", but a way of estimating relative training intensities, rather like [[Heart Rate]]. There are some important benefits to using Stryd over heart rate for estimating relative training intensity. The graph below is showing a run up and back down a local hill. It's not a very long Hill, but it is fairly steep, averaging 6% with sections nearer 10%. The first graph below shows me running hard up the hill, then resting on the way back down. You can see that both my heart rate and power estimate rise on the uphill and decline on the downhill. You'll notice that my heart rate response rather slower to the change in intensity than the power estimate, making it more useful for providing a useful, real-time estimate of intensity.
