Single Leg Hip Thrust with Band-Resisted Hip Drive

First of all I would like to say thanks to Mike Reinold for letting me write a guest post here. I’ve been reading and learning a lot through his blog so it’s kinda cool to write a post here.  I wanted to share a new exercise I have been performing.
At the time I was doing this exercises I only had sprint mechanics in my head, but some days ago I read the articles on Mike’s site onFunctional Assessment and Exercises to Enhance Hip Flexion and The Importance of Hip Flexion Strength.
I’m always looking for exercises that will give me the most bang for the buck, just like everyone else.  I figured that this exercise would be good for both sprint mechanics and also can be a good progression for some of the exercises Mike was recommending by incorporating hip flexion drive into other exercises.
My goal with training, when I started doing the exercise, was to improve my sprint mechanics. I was always finishing trainings with single leg hip thrusts, moved on to add motion, and then to simultaneously flex the other hip (basically a hip flexion drive).  It felt very natural, so I tried out with a band to resist the hip flexion.