The local organizing committee for BMS2010 is proud to welcome the delegates of the XI International Symposium for Biomechanics and Medicine in Swimming. It is an honor for us, for the Norwegian School of Sport Sciences, and for Norway, to host this unique con- ference and to present this Book of Proceedings. We feel that BMS XI is a reference work which covers the central advances in aquatic science since BMS 2006 in Porto and of which you will have considerable pleasure. The International Symposium for Biomechanics and Medicine in Swimming remains the most prestigious of all aquatic oriented scientific congresses in.