scholarly journals Kinematic Analysis of the Racket Position during the Table Tennis Top Spin Forehand Stroke

2021 ◽  
Vol 11 (11) ◽  
pp. 5178
Author(s):  
Ivan Malagoli Malagoli Lanzoni ◽  
Sandro Bartolomei ◽  
Rocco Di Michele ◽  
Yaodong Gu ◽  
Julien S. Baker ◽  
...  
Keyword(s):  
Kinematic Analysis ◽  
National Level ◽  
Maximum Velocity ◽  
Maximum Speed ◽  
Maximum Height ◽  
Table Tennis ◽  
Tennis Players ◽  
Long Line ◽  
Minimum Height ◽  
The Moment

The present study aims to assess the position of the racket, and racket height with respect to the floor, during the table tennis top spin stroke. A stereophotogrammetric system (Smart-D, BTS, 8 cameras, 550 Hz) was used to track the table tennis racket during cross-court (CC) and long-line (LL) shots. Ten national level players completed ten CC and ten LL top spin strokes responding to a robot machine. The racket motion throughout the shot showed specific technical characteristics: the minimum height of the racket was detected during the backswing phase; racket height at the end of backswing phase (maximal distance racket/table) was higher than the minimum; height at the racket maximum velocity (ball/racket impact) was greater than the net’s height. Furthermore, the maximum height of the racket occurred at the end of the forward swing. No differences in these kinematic variables between CC and LL were found. Conversely, a higher inclination of the racket at the moment of maximum speed was detected in LL vs. CC. From a practical perspective, the present findings suggest that table tennis players need to introduce specific exercises in order to increase the height of the racket during the forehand top spin stroke, to improve its effectiveness.

scholarly journals Optimizing Maximum Ejecting Speed for a Gaussian Accelerator Cannon

2016 ◽  
Vol 2 (1) ◽  
pp. 2-6
Author(s):  
Mohammad Reza Noormandipour ◽  
Seyed Ali Reza Manavi ◽  
Mahdi Sarikhani ◽  
Elmira Vahidi
Keyword(s):  
Momentum Transfer ◽  
Dipole Moments ◽  
Maximum Velocity ◽  
Maximum Speed ◽  
Effective Parameters ◽  
Microsoft Excel ◽  
Experimental Conditions ◽  
Straight Line ◽  
The Moment ◽  
Steel Balls

This paper aims to find the maximum speed of an ejected steel ball from a magnetic cannon and determine its relation to other setup parameters. A magnet induces dipole moments in steel balls inside a magnetic cannon and makes them stick together along a straight line. At the moment of collision, this attraction reduces the motion of the balls in other directions. This creates a more efficient momentum transfer along the series of steel balls and consequently, a higher speed for the ejected ball. The striking ball was released from a height of 6 cm above the rail and collided with two magnets, followed by three balls. The speed was calculated using the projectile range formula. The speed was found to be a damping non-monotonic function of the number of balls after the magnet. The effective parameters were studied and the maximum velocity obtained under experimental conditions was 295±5 cm/s. Figures were made using SolidWorks software and data were analyzed using Microsoft Excel 2016 and Gnuplot software.

Analysis of reaction time and lateral displacements in national level table tennis players: are they predictive of sport performance?

2019 ◽  
Vol 19 (4) ◽  
pp. 467-477 ◽  
Author(s):  
Carlos Castellar ◽  
Francisco Pradas ◽  
Luis Carrasco ◽  
Ana De La Torre ◽  
José Antonio González-Jurado
Keyword(s):  
Reaction Time ◽  
National Level ◽  
Sport Performance ◽  
Table Tennis ◽  
Tennis Players ◽  
Lateral Displacements

scholarly journals USAIN BOLD – BIOMECHANICAL MODEL OF SPRINT TECHNIQUE

2019 ◽  
pp. 001
Author(s):  
Milan Čoh
Keyword(s):  
Kinematic Analysis ◽  
Reaction Force ◽  
Maximum Velocity ◽  
Biomechanical Model ◽  
Average Frequency ◽  
Maximum Speed ◽  
Digital Cameras ◽  
Vertical Ground Reaction Force ◽  
Motor Abilities ◽  
Propulsion Phase

The aim of this research was to determine which kinematic parameters generate the maximum sprint speed of the world’s fastest sprinter, Usain Bolt. The biomechanical parameters of a double sprint step, using a 2D kinematic analysis under conditions of the realization of its maximum velocity were analyzed. The APAS computer system was used for the kinematic analysis. The data was recorded with three digital cameras CASIO EX-F1 with a frequency of 300 Hz, while the cameras were connected to one another and synchronized. The measurements were performed at the international athletics competition IAAF World Challenge in Zagreb, Croatia. Bolt reached a maximum speed of 12.42 m·s-1 in the section between 70 and 90 meters. His average stride length in this section was 2.70 m at an average frequency of 4.36 strides/s. His average contact time was 0.86 s and the average duration of his flight phase was 0.145 s. He developed a maximum vertical ground reaction force of 3956.74 N. This force corresponds to 4.1 times the weight of the athlete. The ratio between his braking and propulsion phase was 37.3% : 62.7%, which is a good indicator of an economical running technique.  The maximum speed of Usain Bolt is a combination of optimal anthropometric characteristics, motor abilities, and an extremely rational technique of sprinting gait.

A kinematic comparison between long-line and cross-court top spin forehand in competitive table tennis players

2018 ◽  
Vol 36 (23) ◽  
pp. 2637-2643 ◽  
Author(s):  
Ivan Malagoli Lanzoni ◽  
Sandro Bartolomei ◽  
Rocco Di Michele ◽  
Silvia Fantozzi
Keyword(s):  
Table Tennis ◽  
Tennis Players ◽  
Long Line

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.

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