My woman must stop her race for this problem, and with some good exercises of stretching, for give more power and flexibility to this part of the body, with one month and half restart to race.
In Italy this kind of problems have the common name of "Problem of Tapascione", like Tapascione means a runner that have a low velocity, with more contact on the earth, exsuse me for my english, i try to make more in the next time, thank you very much for all, and i think that this is a very good post