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Perception training in tennis
Mrázová, Kristina ; Carboch, Jan (advisor) ; Malý, Tomáš (referee)
Title: Perception training in tennis Objectives: The main goal of this paper is to assess the impact of perceptual-cognitive training on the development of anticipatory skills in expert and novice tennis players. Methods: The result of this paper was obtained using an experiment based on the test-retest method. It is a randomized controlled trial in which the intervention groups underwent three weeks of perceptual-cognitive training in addition to the test and retest process. All parts of the experiment (test, perceptual training, retest) were based on watching edited video recordings of tennis serves using the temporal occlusion technique. The tracked variable in the experiment was the relative accuracy of responses. Results: In the intervention group of expert tennis players, a significant difference was reported between test and retest performance (p < 0.01; d = 1.05). No statistical significance was observed in the intervention group of tennis novices or in any of the control groups. Since the intervention and control groups of expert tennis players did not differ in the test stage, the observed increase in performance was attributed to the effect of applied perceptual-cognitive training. The statistically significant increase in relative accuracy of responses between test and retest occurred...
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Identification of brain areas in anticipation during tennis
Gavendová, Karolína ; Kočíb, Tomáš (advisor) ; Carboch, Jan (referee)
Title: Identification of brain areas in anticipation during tennis Objectives: The main aim of diploma theses is identification of brain areas responsible for anticipation and making decision during watching tennis rallies at tennis players by functional magnetic resonance. Methods: The research group consists of 10-12 competitive tennis players aged 18-28. The research takes place at the hospital in Motol. Before the examination itself, the probands are instructed on the course and conditions of testing. Testing consists of examining the brain to see if the proband is healthy, testing anticipation with a video of tennis rallies followed by a resting state phase to evaluate regional interactions. The video consists of 6 blocks separated by a static image lasting 20 s. Each block contains 6 videos with tennis rallies. Each video lasts exactly 6 s, including 300 ms to stop the tennis rallies. The tennis rallies are stopped when the ball is over the tennis net or on the player's racket. The task of the proband is to monitor the tennis rallies and after stopping to determine whether the subsequent stroke will fly to the left or right side of the tennis court, or to the center. The target data are formed from functional magnetic resonance images, probands' responses to individual rallies, and response...
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Return temporal anticipation on the basis of the ball trajectory estimation
Carboch, Jan ; Süss, Vladimír (advisor) ; Zháněl, Jiří (referee) ; Tomajko, Dušan (referee)
Return temporal anticipation on the basis of the ball trajectory estimation Abstract Ball-hitting in tennis involves spatio-temporal information about the ball's flight trajectory. We have focused on the temporal part of the information during returning a tennis serve that was simulated by a ball machine. The tested people had occlusion glasses placed on their head, which occluded their vision at the exact time, when the ball was being sent from the ball machine. The tested person did not know which part of the ball flight trajectory would be occluded, nor the ball speed. We examined the effect of part ball flight trajectory occlusion on the correct return timing of the ball. The analysis revealed that the greatest problems occurred while the second third of the ball flight trajectory had been occluded and reached most temporal errors at that time. Keywords: tennis, anticipation, ball flight trajectory, return stroke, occlusion glasses
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Comparisons of softball swing at pitches from a pitching machine and pitcher
Šmejkalová, Petra ; Carboch, Jan (advisor) ; Pravečková, Petra (referee)
Title: Comparisons of softball swing at pitches from a pitching machine and pitcher Objectives: The aim of this research is to compare the timing of players of softball within individually phases of hitting by a standard softball pitcher and a pitching machine. Another aim is to analyse individual phases of softball hitting and determine whether the training of hitting through a pitching machine is a appropriate substitute for the preparation of a standardized softball pitching which softball players experience during each match. Methods: This research is a descriptive case study, in which we gather a large number of data from five individuals. A ride of five players and their execution of hitting approaches against a pitching machine and real pitcher was created. Subsequently the record from the camera Basler GeniCam piA640-210gc with frame rate 200 frames per second was then evaluated via of computer program Dartfish, which is designed for analyses of motor skills. Results: The results show that the whole movement of players was noticeably slower, in the case of a pitching machine use. Regarding the use of a pitching machine and real pitcher, the statistic results show differences. The differences derive from the absence of conscious prediction of pitches motion in the case of the pitching...
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Comparisons of softball swing at pitches from a pitching machine and pitcher
Šmejkalová, Petra ; Carboch, Jan (advisor) ; Pravečková, Petra (referee)
Title: Comparisons of softball swing at pitches from a pitching machine and pitcher Objectives: The aim of this research is to compare the timing of players of softball within individually phases of hitting by a standard softball pitcher and a pitching machine. Another aim is to analyse individual phases of softball hitting and determine whether the training of hitting through a pitching machine is a appropriate substitute for the preparation of a standardized softball pitching which softball players experience during each match. Methods: This research is a descriptive case study, in which we gather a large number of data from five individuals. A ride of five players and their execution of hitting approaches against a pitching machine and real pitcher was created. Subsequently the record from the camera Basler GeniCam piA640-210gc with frame rate 200 frames per second was then evaluated via of computer program Dartfish, which is designed for analyses of motor skills. Results: The results show that the whole movement of players was noticeably slower, in the case of a pitching machine use. Regarding the use of a pitching machine and real pitcher, the statistic results show differences. The differences derive from the absence of conscious prediction of pitches motion in the case of the pitching...
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Return temporal anticipation on the basis of the ball trajectory estimation
Carboch, Jan ; Süss, Vladimír (advisor) ; Zháněl, Jiří (referee) ; Tomajko, Dušan (referee)
Return temporal anticipation on the basis of the ball trajectory estimation Abstract Ball-hitting in tennis involves spatio-temporal information about the ball's flight trajectory. We have focused on the temporal part of the information during returning a tennis serve that was simulated by a ball machine. The tested people had occlusion glasses placed on their head, which occluded their vision at the exact time, when the ball was being sent from the ball machine. The tested person did not know which part of the ball flight trajectory would be occluded, nor the ball speed. We examined the effect of part ball flight trajectory occlusion on the correct return timing of the ball. The analysis revealed that the greatest problems occurred while the second third of the ball flight trajectory had been occluded and reached most temporal errors at that time. Keywords: tennis, anticipation, ball flight trajectory, return stroke, occlusion glasses
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