Objective of the study was, according to average relative error, to analyze the variability of biomechanical indicators (of athletes and the put) during shot put for the athletes of international level (8 athletes - group A) and for the athletes of national level (6 athletes - group B). Each of them performed 6 trials and all videos were collected using two high speed digital cameras placed on the performance field, perpendicular to each other. Only measured trials were analyzed using three dimensional APAS software. According to the average relative error, selected indicators of the athlete and the put (mainly during release) have generally shown low variability (below 10% in about 80% of the analyzed cases). In only 4 out of analyzed cases (for two release indicators) variability was high (>20%), in 9 of cases variability (according to the average relative error) was medium (10%-20%), while in the remaining cases variability was low (<10%).
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