Analysis of the temporal structure of the cycle is versatile and valuable method in many cyclic sports. Biomechanical measurements were conducted in competitive rowing boats. Boat acceleration, velocity, handle force, oar angles and the segments velocities were measured. Accelerations of whole system and the rower`s CM were derived and used for definition of the temporal structure of the cycle. Six micro phases were derived during the drive and three during recovery phase. It was found that emphasis on acceleration of the boat and rower`s CM switches twice during the drive. Presence of the micro-phase D3 initial boat acceleration was defined as the most important indicator of efficiency of rowing technique. It creates faster moving platform on the stretcher for acceleration of the rower`s CM.
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