Michael Giakoumis: Physiotherapist: British Athletics, Total Performance & Centre of Health and Human Performance (London)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                Carles Pedret MD, PhD: Sports Medicine and Imaging department. Clinica Diagonal (barcelona) Sprinting places a significant demand on the rectus femoris (RF) and is one of the most common mechanisms of injuries for this muscle (Hasselman et al., 1995). During the initial…