YouTube - Correcting Overpronation - Danny Dreyer. Does your big toe point away from your centerline while running or walking? Correct this problem by leveling your pelvis, as Danny Dreyer explains in this great video clip.

More about overpronation: When runners or shoe companies talk about pronation, they are talking about overpronation. Pronation is a balance shift from the outside to the inside of your foot as your leg begins to bear weight. It's an important shock-absorption process, and it loads up the "spring" in your step. Pronation is natural when walking or running with good posture and mechanics. Overpronation happens when you land your foot with the big toe pointed away from your centerline. As you land and move forward with your foot in this position, the bottom of your foot rolls excessively, some of the impact of landing is absorbed by your ankle (instead of by your arch), and your lower leg will be twisted outward and away from your knee. Your knee joint has some side-to-side mobility, but it is basically a hinge, intended to swing your lower leg straight ahead and straight back. If you run or walk with your toes pointed out all of the time, you are stressing the inside edge of that hinge, and over time it will be damaged (or a compensation will cause damage elsewhere).

The key to correcting this problem is landing your foot pointing straight ahead, in the direction of travel. Do not try to correct your foot's flight through the air during the swing phase of your stride. That may only make matters worse. Instead, focus on leveling your pelvis as Danny explains in the video clip. When your pelvis is level, your lower leg will swing straight ahead, and your foot will land pointing forward. Practice leveling your hips both while walking and running.

YouTube - Running Technique

Pretty good intro to sound running technique.

YouTube - ABCs of Running - Part 1
Comments: Skipping versions of the ABCs - good explanations.