I've written previously about running cadence and the use of digital metronomes in helping to coach subtle increases in stride frequency at a given speed, and thus improve stride length. This primarily helps to stop a runner from over-striding, as well as gently improving limb stiffness.
Working on cadence where appropriate provides a simple cue for a runner to practice as 'homework' in between technique coaching sessions!
In the video above, we can clearly see the immediate effect an increase in cadence has on an over striding triathlete...
For more information on the research surrounding running cadence read this:
Also, be sure to read this short piece on heel striking, and why it's perhaps not all bad!:
