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From Fellrnr.com, Running tips
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=Metrics=
RunScribe currently measures a number of key metrics.
* '''Symmetry'''. This is a composite based on several metrics comparing left and right legs. It shows symmetry of efficiency, shock, and motion in one graphic. These three values are themselves combinations of other metrics. <br/>[[File:RunScribe symmetry.png|none|thumb|500px|RunScribe's simple visualization of symmetry.]]
* '''Efficiency'''. This is a combination of shorter contact time, longer flight time and a higher step rate, which RunScribe considers indicating greater efficiency.
* '''Shock G's'''. This is the combination of braking and impact forces, with RunScribe suggesting typical ranges of 6-29 G's.
* '''Motion'''. This is a combination of [[Foot Strike]] and [[Pronation]], and is used for evaluation of symmetry rather than to provide a direct metric.
* '''Braking G's'''. Ideally your foot will travel in front of your body, then you will "paw back" so that when it touches down your foot should be moving backwards in relationship to your body and fairly stationary in relationship to the ground. Without this paw back, you are likely to suffer from [[Overstriding]] and the impact with the ground will results in braking G's. RunScribe suggest Braking G's are in the range 4-13 G's, and lower is defiantly better.
* '''Impact G's'''. The impact when your foot lands is measured by RunScribe, but it's not clear what this value means. [[The Science of Running Shoes]] does not support the idea that higher impact results in higher injury rates, and there's some evidence to the contrary. RunScribe suggest Impact G's are in the range 5-15 G's.
* Multiple runners can share a RunScribe, rather than it being artificially crippled to only work with one person.
* RunScribe uses small watch batteries, so they last for many hours. (RunScribe also sell rechargeable versions of the batteries.)
* For what it does, I'd say that RunScribe is great value. It's only $239 from [http://www.runscribe.com/ http://www.runscribe.com/] which is less than the price of a couple of pairs of shoes.
=RunScribe Cons=
There are a few limitations to RunScribe to be aware of.
* The Footpods don't have an explicit start/stop, so I put them in my pocket while walking too/from my run.
* You need a Smartphone to use RunScribe.
* There's (currently) no easy export of the underlying data for you do to your own analysis. You can use URLs like [https://dashboard.runscribe.com/runs/31438/metric/stance_excursion_fs_mp https://dashboard.runscribe.com/runs/31438/metric/stance_excursion_fs_mp] to access the raw data in JSON format.
=Examples=
The graphs below are from a [[Lactate Threshold]] test used to evaluate the [[BSX]] sensor. The test has 3 minute stages of 20:00, 8:34, 8:13, 7:54, 7:30, 7:04, 6:40, 6:23, 6:04. You can display as many values as you like, but it gets cluttered so I'm only displaying three metrics from a single foot for clarity. This run is particularly interesting as I was fatigued and [[Glycogen]] depleted so it's more likely to show up problems.
