Coach Al here with a short, illustrative video on the importance of dorsiflexion when running.
The majority of athletes who come into our gait analysis lab are looking for more speed and power when running. What we often find is inadequate ankle mobility and insufficient length in the calf, which impedes dorsiflexion.
Take a look at the run form of Boston Marathon elite runners in the video. You will see that they have an amazing 57? of dorsiflexion in the mid-stance phase of the stride. That's what you need if you want to run fast, and be at a much lower risk of calf injury. Our blog post on the stretches we most often recommend, can help you with that! Just a quick tip for today!