[youtube=http://www.youtube.com/watch?v=VTzAsB3glFs]Continuing in our recent focus on the squat and deadlift is this thought: the squat and the deadlift are not leg movements; they are hip movements. When performed correctly they use all the muscles of the hip structure and place little stress on the knee.
The Squat and the Romanian Deadlift (RDL) are also similar in two other ways. 1. They begin in the upright position. 2. The movement is initiated by the hip breaking and the glutes coming back. A common error, particularly with the squat, is to see the knee break first, causing the movement to become quad dominant.