In this Velocity Meter study we tested Colombian Olympian Isabella Arcilla with two different swimming starts.  First with a flat back that she was used to doing and we see many fast swimmers using this method (namely in Great Brittain) and then we tested her with an arched or rounded back that we see the fastest starters in the world using (Brad Tandy and Caeleb Dressel).  Find out the results of this study that may influence how you practice or teach the swimming start.