Hip Extension: External Rotation 2/3, The same but different. If we’re training internal rotation of our hip while in extension, it logically makes sense to train external rotation as well. The same principles hold true: we trained this position at-length (passive stretch isometric at end range), followed by to-length (eccentric loading from mid-end range), then training it short with passive range lift-offs. Hip extension is typically only trained by stretching hip flexors and doing glute bridg