Studies of elite athletes have shown that a faster running cadence leads to increased speed and endurance as well as less injury caused by things like over-striding. Many articles quote a magic cadence number of 180 strides per minute (90 per foot) as being the perfect target. The 180 target is not without debate, but the focus on this project is not on finding the perfect number. Instead we are concerned with how to measure cadence in real-time so that one can actually target whatever number is right for them.
Sports watches exist that can sound an alarm when cadence is above or below a pre-defined threshold and/or show the average cadence after a run is complete. These are nice features, but what you really want to know is what is your cadence right now so that you can adjust in real-time to hit your target.
A more detailed post about this project can be found here - http://wearemanifold.com/striker-realtime-cadence-wearable/