Biomechanical analysis of the on-water rowing stroke

Objective. Empirical observations show that rowers demonstrate higher efficiency working on the rowing ergometer than working on water. The aim of the study was to determine the difference in efficiency levels and to verify its validity using a model based on fluid dynamics principles. Methods. A part of work done by rowers is lost in boat deformation and in the friction caused by the oarblades moving through the water. Load conditions for training on a rowing ergometer need to be increased by a certain quantity with respect to those set for on-water training. Results. Times were measured during on-water runs and rowing ergometer tests. Discussion and Conclusions. Times measured during on-water runs matched fairly well those calculated on rowing ergometer tests.