What exactly is "triple extension?" When is it used in exercise and why?
Triple extension is the simultaneous extension of your hips, knees and ankles. We use it in exercise because it's vitally important in gait. It's especially important to athletes since triple extension maximizes lower body force production in sprinting and jumping.
Common exercises used to strengthen triple extension are Olympic lifts like the Snatch and Power Clean and most standard lower body plyometric exercises. See the PTontheNET.com Exercise Library for descriptions and visual examples of the following exercises: