ABSTRACT
The purpose of this study was a) to evaluate the method of analyzing swimming motions during a race with two parallel moving cameras (PMC-method) and b) to gain an insight into the process of movement pattern changes during the 50 m crawl sprint. Ten swimmers were recorded and digitized from the left and right side by two parallel moving cameras during a 50 m crawl sprint. Wrist and hip were digitized in the beginning and at the end of the race and three-dimensional coordinates were calculated using the DLT method [1]. These results were compared to a 15 m crawl sprint with stationary cameras. Kinematic parameters of temporal and spatial pulling patterns of the arm (wrist) relative to the swimmers body were analyzed. Intraindividual differences were found in temporal parameters but not in the spatial patterns of the movements. The measurements from both the moving and stationary cameras showed nearly identical results; therefore, the PMC-method is useful for analyzing kinematic parameters in swimming within the events.
