I am beginning to think that my problem is my knee lift. I can bring my knee right up running slow but the faster I go the lower I am able to bring them up before my body begins descending. I tried doing some high knee drills today, for the first time, and had a hard time lifting them quickly and was very tired after about 8 seconds. Therefore I think my hips are the weak link. I will try and do some exercises for them, anyone recommend any? I currently only do pressing movements such as the squat and no actual leg/knee lifting movements.
Hurdle mobility drills, a-skips, a-runs, and very deep squats to gain more hip mobility.