Figure - available from: Science Progress
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Scatter plot between Catapult and Tracab for TD, HSR distance, sprint distance, HSRC, and SC. The data displayed in the figure represents the aggregation of values over 5-min epochs.
Source publication
This study aimed to compare the agreement of total distance (TD), high-speed running (HSR) distance, and sprint distance during 16 official soccer matches between a global navigation satellite system (GNSS) and an optical-tracking system. A total of 24 male soccer players, who are actively participating in the Polish Ekstraklasa professional league...
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Citations
The 100-m sprint is one of the track events, and the pace of the runner can be measured using avariety of tools, such as a hand stopwatch, timing gate, laser device, radar device, photocelltiming, etc. The data measured is the mean travel time. Nonetheless, monitoring an individualsprinter’s instantaneous speed tracking is essential for assisting staff trainers in developing anappropriate training schedule for the individual sprinter. The purpose of this study was toconstruct a computer vision-based system for assessing the sprinting speed of the 100-m subtasksand also to investigate the concurrent validity of video analysis software among athletes. Fiveathletes participated in the research to determine its validity. Over the course of two trials, thesprinting pace of each participant’s subtasks (a 100-m split to 10 m for each subtask) wasmeasured. The application of the computer vision-based system to video analysis software wasvalidated using the Pearson correlation coefficient. The agreement between the two measurementsystems was quantified using Bland-Altman plots. The results revealed a significant relationshipbetween the two systems and all 100-m subtask sprinting speeds (r = 0.961–1.000, p 0.0001). TheBland-Altman analyses indicated that the mean differences in 100-m subtask speeds wereconsistently close to zero, falling within the 95 % limits of agreement. The scatter plot distri-bution showed symmetry. The computer vision-based system proved to be a valid tool, suggestingits potential value in measuring and monitoring the 100-m subtask sprinting speed of athletes.
