Uncertainty and Visual Strategies in Table Tennis

1989 ◽  
Vol 68 (2) ◽  
pp. 507-512 ◽  
Author(s):  
Hubert Ripoll
Keyword(s):  
Visual Search ◽  
Time Pressure ◽  
Motor Behavior ◽  
Search Pattern ◽  
Movement Preparation ◽  
Table Tennis ◽  
Visual Behavior ◽  
Tennis Players ◽  
Execution Phase ◽  
Visual Fixations

Ball games are characterized by perceptual uncertainty and time-pressure. Of interest is the visual-search pattern carried out when these characteristics change. This is the case in table-tennis situations when comparing a drill situation, when one kind of stroke is constantly repeated, and a match situation, when the stroke is more often unpredictable. We analysed, during play, the visual-search pattern of five expert table tennis players to examine the effect of uncertainty on visual behavior. Direction of gaze was recorded by a video-oculographic recorder (NAC Eye Mark Recorder IV). Analysis showed that (i) visual fixations towards opponent player were only systematic in a match, contrary to drill where they occurred less frequently. (ii) Whatever the situation, only the first part of the ball's trajectory was visually tracked. This occurred immediately after the opponent's release of the ball. Nevertheless, visual tracking was more frequent and of longer duration in a match. (iii) Analysis of motor behavior showed that the duration of the movement preparation was longer in a match while the duration of the execution phase was unchanged.

scholarly journals Skill Level in Tennis Serve Return Is Related to Adaptability in Visual Search Behavior

2021 ◽  
Vol 12 ◽  
Author(s):  
Jernej Rosker ◽  
Ziva Majcen Rosker
Keyword(s):  
Visual Search ◽  
Hand Movement ◽  
National Level ◽  
Area Under The Curve ◽  
Search Strategies ◽  
Visual Behavior ◽  
Tennis Players ◽  
Machine Learning Model ◽  
Tennis Serve ◽  
The Individual

Analyzing visual search strategies in tennis is primarily focused on studying relationships between visual behavior and tennis performance. However, diverse movement characteristics among different servers suggest the importance of adjusting the visual search strategies of an individual while playing against different opponents. The aim of this study was to analyze whether visual search strategies can be attributed to the individual server and the returning player during the tennis serve return or return performance. Seventeen tennis players were enrolled in this study (five international players and 12 national players) producing a sample of 1,020 returns measured with mobile eye trackers. The random forest machine learning model was used to analyze the ability to classify the returning player [area under the curve (AUC): 0.953], individual server (AUC: 0.686), and return performance category (AUC: 0.667) based on the location and duration of the focal vision fixation. In international tennis players, the higher predictability of the server was observed as compared with national level players (AUC: 0.901 and 0.834, respectively). More experienced tennis players presented with a higher ability to adjust their visual search strategies to different servers. International players also demonstrated anticipatory visual behavior during the tossing hand movement and superior information pickup during the final phases of the stroke of a server.

Growth and maturity status of young male table tennis players

2021 ◽  
pp. 1-19
Author(s):  
Manuel J. Coelho-e-Silva ◽  
Jan M. Konarski ◽  
Magdalena Krzykała ◽  
Szymon Galas ◽  
Pluta Beata ◽  
...  
Keyword(s):  
Young Male ◽  
Table Tennis ◽  
Tennis Players

Technology teaching of college table tennis players based on virtual simulation technology

2021 ◽  
pp. 002072092098608
Author(s):  
Jincheng Yu ◽  
Yonatan Asher Vexler ◽  
Rongzhi Li
Keyword(s):  
Physical Education ◽  
Teaching Method ◽  
Student Interest ◽  
Table Tennis ◽  
Tennis Players ◽  
Modern Information Technology ◽  
Multimedia Teaching ◽  
Short Period ◽  
Competition Process ◽  
The Times

Modern information technology is more and more widely used in school physical education. At the same time, the application of multimedia technology is becoming more and more extensive in education. As a teaching method, multimedia has developed into an important component of modern educational technology and science, and also provides support for teaching reform. The use of multimedia organization teaching can make up for the shortcomings of traditional physical education, promote the development of physical education, cultivate students' lifelong sports awareness and enhance physical fitness. Physical education is an important component of modern education, and its reform is also the trend of the times. According to the characteristics of the ordinary group of college table tennis, exploring the use of multimedia teaching platform can make the table tennis class more vivid and interesting, let students master some basic skills and skills of table tennis in a short period of time, understand and experience table tennis. The competition process enhances student interest and serves lifelong sports.

scholarly journals Visual search behavior and performance in luggage screening: effects of time pressure, automation aid, and target expectancy

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Tobias Rieger ◽  
Lydia Heilmann ◽  
Dietrich Manzey
Keyword(s):  
Visual Search ◽  
Target Location ◽  
Time Pressure ◽  
Response Times ◽  
Search Behavior ◽  
High Time ◽  
Luggage Screening ◽  
Negative Effect ◽  
And Performance ◽  
Automated Support

AbstractVisual inspection of luggage using X-ray technology at airports is a time-sensitive task that is often supported by automated systems to increase performance and reduce workload. The present study evaluated how time pressure and automation support influence visual search behavior and performance in a simulated luggage screening task. Moreover, we also investigated how target expectancy (i.e., targets appearing in a target-often location or not) influenced performance and visual search behavior. We used a paradigm where participants used the mouse to uncover a portion of the screen which allowed us to track how much of the stimulus participants uncovered prior to their decision. Participants were randomly assigned to either a high (5-s time per trial) or a low (10-s time per trial) time-pressure condition. In half of the trials, participants were supported by an automated diagnostic aid (85% reliability) in deciding whether a threat item was present. Moreover, within each half, in target-present trials, targets appeared in a predictable location (i.e., 70% of targets appeared in the same quadrant of the image) to investigate effects of target expectancy. The results revealed better detection performance with low time pressure and faster response times with high time pressure. There was an overall negative effect of automation support because the automation was only moderately reliable. Participants also uncovered a smaller amount of the stimulus under high time pressure in target-absent trials. Target expectancy of target location improved accuracy, speed, and the amount of uncovered space needed for the search.Significance Statement Luggage screening is a safety–critical real-world visual search task which often has to be done under time pressure. The present research found that time pressure compromises performance and increases the risk to miss critical items even with automation support. Moreover, even highly reliable automated support may not improve performance if it does not exceed the manual capabilities of the human screener. Lastly, the present research also showed that heuristic search strategies (e.g., areas where targets appear more often) seem to guide attention also in luggage screening.

Control of Striking Velocity by Table Tennis Players

2004 ◽  
Vol 99 (3) ◽  
pp. 1027-1034 ◽  
Author(s):  
Welber Marinovic ◽  
Cristina Akiko Iizuka ◽  
Andrea Michele Freudenheim
Keyword(s):  
Table Tennis ◽  
Tennis Players

scholarly journals Training Level Does Not Affect Auditory Perception of The Magnitude of Ball Spin in Table Tennis

2017 ◽  
Vol 55 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Daniel P. R. Santos ◽  
Roberto N. Barbosa ◽  
Luiz H. P. Vieira ◽  
Paulo R. P. Santiago ◽  
Alessandro M. Zagatto ◽  
...  
Keyword(s):  
Auditory Perception ◽  
Auditory Information ◽  
Training Level ◽  
Table Tennis ◽  
Training Experience ◽  
Tennis Players ◽  
Level Of Training ◽  
Speed And Accuracy ◽  
Fast Spin ◽  
Different Levels

AbstractIdentifying the trajectory and spin of the ball with speed and accuracy is critical for good performance in table tennis. The aim of this study was to analyze the ability of table tennis players presenting different levels of training/experience to identify the magnitude of the ball spin from the sound produced when the racket hit the ball. Four types of “forehand” contact sounds were collected in the laboratory, defined as: Fast Spin (spinning ball forward at 140 r/s); Medium Spin (105 r/s); Slow Spin (84 r/s); and Flat Hit (less than 60 r/s). Thirty-four table tennis players of both sexes (24 men and 10 women) aged 18-40 years listened to the sounds and tried to identify the magnitude of the ball spin. The results revealed that in 50.9% of the cases the table tennis players were able to identify the ball spin and the observed number of correct answers (10.2) was significantly higher (χ2 = 270.4, p <0.05) than the number of correct answers that could occur by chance. On the other hand, the results did not show any relationship between the level of training/experience and auditory perception of the ball spin. This indicates that auditory information contributes to identification of the magnitude of the ball spin, however, it also reveals that, in table tennis, the level of training does not interfere with the auditory perception of the ball spin.

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