Tennis Serve Research Articles

Concurrent validity of the athla velocity application for measuring tennis service ball velocity

Concurrent validity of the athla velocity application for measuring tennis service ball velocity

PEMBINAAN OLAHRAGA TENIS LAPANGAN MELALUI ASPEK BIOMEKANIK DAN KINESIOLOGI

In the game of tennis there are many factors that must be mastered by the players, because when viewed from the movement, the sport of tennis is a tough sport, so to be able to play tennis properly and be able to maintain the shape of the game there are several basic factors that a tennis player needs to have. This research is a descriptive qualitative research by describing and analyzing service in tennis coaching through biomechanical and kinesiological aspects. The steps taken are articles, data reduction, data analysis, data compilation, and drawing conclusions. Article preparation is done by collecting articles from various online sources with relevant topics. This research is a collaborative research that is practical based on the problems that occur in the development of tennis sports. Thus it can be said that a coach or sports coach must be able to establish good communication and be able to give an appropriate assessment of what is being done and what has been done and be able to provide feedback. Recognizing the importance of the role of a coach in the achievement of athletes, a coach must work professionally.

Acute influences of tennis services on cardiac output and brachial hemodynamics in young male tennis players.

This study aimed to examine the influences of tennis service exercise on cardiac output (CO) and bilateral brachial hemodynamics in young tennis players. Experimental study. Ten young male tennis players (21 ± 2 years of age) participated. Each performed 100 tennis services without a return shot for experimental tennis exercise. Cardiovascular hemodynamic variables, including bilateral brachial blood flow (BF), shear rate (SR), blood pressure, and CO, were collected under three conditions: 1) baseline, 2) immediately after the tennis services (post), and 3) 1 h after the tennis services (1-hour). The positive incremental area under the curve (iAUC) for brachial hemodynamic variables was calculated. Immediately after the 100 tennis services, CO, brachial BF, SR, and brachial vascular conductance (VC) in the dominant and non-dominant arms increased (p < 0.05). At the 1-hour condition, CO returned to baseline; the brachial BF, SR, and VC in the non-dominant arm returned to baseline levels, whereas the same variables in the dominant arm remained increased. The iAUC for brachial BF and VC in the dominant arm was higher than that in the non-dominant arm. Furthermore, the brachial BF/CO ratio index in the dominant arm increased at the post and 1-hour conditions, whereas that in the non-dominant arm was unchanged. Tennis service exercise specifically increases brachial BF, SR, and VC in the dominant arm, independent of increased CO. Our findings contribute to unveiling the underlying mechanisms of brachial artery adaptations in tennis players.

Modeling and Simulation of Tennis Serve Image Path Correction Optimization Based on Deep Learning

The traditional tennis serve training model has been deeply ingrained in the current training. For athletes, in order to master the essentials of technical movements proficiently, they must practice for a long time and repeatedly according to the guidance of coaches. Effectively correcting the image path of tennis serve can improve the level of tennis training and competition. When correcting the image path of the tennis serve, it is necessary to mark the corners of the error points according to the characteristics of rotating multidimensional characteristics of the serving action. The traditional method adopts the critical node control method to realize the extraction of limb features and complete the path correction of the serving image. The error points of the process are marked, which reduces the accuracy of the path correction. Based on the deep learning model, this paper proposes an optimization modeling method for tennis serve image path correction and builds a visual feature acquisition system for tennis serve action based on remote video monitoring. The processing method designs the edge segmentation algorithm for the collected visual images and, on this basis, marks the corner points of the error points of the serving action and realizes the optimal modeling of the path correction of the tennis serving image. In this paper, the DLT algorithm and MSDLT algorithm are compared first, and then, the DLT algorithm is compared with the algorithm in this paper. The results show that the success rate of this method is about 92%, while the success rate of DLT algorithm is only about 82%. This algorithm has obvious advantages. The method in this paper is used to correct the action shape of the tennis serving action, which has better real time and accuracy and superior performance and can accurately track the visual edge information feature points of the player during the serving process.

The Correlation of Arm Muscle Power and Flexibility Of the Waist to the Field Tennis Service Capability.

The purpose of this study was to determine the contribution of arm muscle power and flexibility to the ability of field tennis service. The type of this research is correlation. The population and sample in this study were local 3rd semester 3 c Physical Education Teacher Training Offices of UIR, totaling 23 people. The research instruments used were overhead medicine ball throw tests, flexibility tests, and field tennis service tests. The data analysis technique used is to calculate multiple correlation values. Based on the results of the study showed that there was a contribution of arm muscle power and flexibility to the results of the ability to service tennis tennis students with a calculated value = 0.698.&#x0D;

Determinant Physical Factors of Tennis Serve Velocity: A Brief Review.

To review the main physical aspects that could positively or negatively influence serve velocity (SV). An examination of existing literature including studies analyzing positive (biomechanical aspects, anthropometrics, range of motion, strength, and power) and negative (competition-induced fatigue) associations to SV are summarized in this review. Aspects such as lower-leg drive, hip and trunk rotations, upper-arm extension, and internal rotation seem to be the major contributors to racquet and ball speed. Favorable anthropometric characteristics, such as body height, arm length, and a greater lean body mass, seem to positively influence SV. Also, strength indicators such as maximal isometric strength and rate of force development in specific joint positions involved in the kinetic chain alongside upper-body power seem to be related to faster serves. On the other hand, the effects of prolonged or repetitive match play may impair the aforementioned factors and negatively influence SV. Following specific serving models that seem to enhance velocity production and efficient motion is highly recommended. Moreover, achieving a higher impact point, alongside shifting body composition toward a greater lean body mass, will most likely aid toward faster serves. Programs aiming at improving maximal isometric strength and rate of force development in specific positions involved in the kinetic chain including stretch-shortening cycle predominance and the mimicking of the serve motion seem of great interest to potentially increase SV. Effective recovery and monitoring of these variables appear to be essential to avoid impairments produced by continued or repetitive competition loads.

Effectiveness of Training Programs to Improve Tennis Service Skills

Servis dalam permainan tenis penting, karena selain sebagai pembuka dalam suatu pertandingan, servis dapat memberikan poin jika masuk ke area lawan secara sah tanpa dapat mengembalikannya. Penelitian ini memiliki tujuan utama untuk melihat sejauh mana hasil program latihan keterampilan tenis lapangan pada mahasiswa Penjaskesrek Semester Ganjil di FKIP Universitas Halu Oleo. Penelitian ini menggunakan metode eksperimen. Populasi dalam penelitian ini adalah seluruh mahasiswa Penjaskesrek Semester Ganjil FKIP Universitas Halu Oleo yang membuka 959 mahasiswa. Sampel dalam penelitian ini menggunakan purposive sampling yang diambil dengan syarat siswa aktif, laki-laki, dan juga aktif mengikuti kursus tenis sehingga diambil sampel 20 siswa. Instrumen akurasi pukulan servis dalam penelitian ini menggunakan “Tes Prestasi Tenis Hewitt” dari AAHPER yang memiliki nilai validitas dan reliabilitas tertentu, nilai validitasnya adalah 0,93 sedangkan nilai reliabilitasnya adalah 0,94. Penelitian ini melihat perbedaan antara tes awal (pre-test) dan tes akhir (post-test) dengan orang eksperimen yang diberi perlakuan selama 30 kali latihan. Berdasarkan hasil pengolahan data diperoleh rata-rata serviceability pada saat pre-test adalah 34 poin, dengan standar deviasi 0,2, sedangkan rata-rata serviceability pada post-test adalah 42 poin, dengan standar deviasi 0,9 Penelitian ini membuktikan bahwa terdapat perbedaan hasil service yang signifikan antara pre-test dan post-test setelah latihan diberikan secara teratur. Penelitian ini melihat perbedaan antara tes awal (pre-test) dan tes akhir (post-test) dengan orang eksperimen yang diberi perlakuan selama 30 kali latihan. Berdasarkan hasil pengolahan data diperoleh rata-rata serviceability pada saat pre-test adalah 34 poin, dengan standar deviasi 0,2, sedangkan rata-rata serviceability pada post-test adalah 42 poin, dengan standar deviasi 0,9 Penelitian ini membuktikan bahwa terdapat perbedaan hasil service yang signifikan antara pre-test dan post-test setelah latihan diberikan secara teratur. Penelitian ini melihat perbedaan antara tes awal (pre-test) dan tes akhir (post-test) dengan orang eksperimen yang diberi perlakuan selama 30 kali latihan. Berdasarkan hasil pengolahan data diperoleh rata-rata serviceability pada saat pre-test adalah 34 poin, dengan standar deviasi 0,2, sedangkan rata-rata serviceability pada post-test adalah 42 poin, dengan standar deviasi 0,9 Penelitian ini membuktikan bahwa terdapat perbedaan hasil service yang signifikan antara pre-test dan post-test setelah latihan diberikan secara teratur.

Improving Tennis Serve Velocity: Review of Training Methods and Recommendations

ABSTRACT One of the essential components to success in tennis is serve velocity (SV). Coaches and practitioners aim to maximize performance and results by increasing this determinant aspect. Concentrically or eccentrically predominant conventional resistance training programs have been used to raise SV, obtaining moderate increases in experienced populations. Nevertheless, indirect improvements in other components, such as asymmetry reductions and increased neural adaptations following these designs, could interest the young competitor. Other methodologies such as medicine ball throws and explosive or power-based programs that mimic the serve kinetic chain seem to obtain greater gains in young players, because the implication and body structures involved seem more specific to the action. More recent methodologies such as flywheel-based training or weighted implements or limbs also could be of interest, although further studies are needed to confirm the effectiveness of these programs and specific load prescriptions. However, data suggest that heavier or lighter load exercises seem valid options to improve SV if the athlete performs maximal intended execution velocity. Added to the currently available literature on training methods to increase SV, exercise prescription examples are provided to help the strength and conditioning coach improve this key variable.

Analisis Keterampilan Teknik Servis Tenismeja Pada Ekstrakurikuler Di SMP Negeri 19 Palembang

This study aims to determine the results and analyze table tennis service skills in students who take table tennis extracurricular at SMP Negeri 19 Palembang. This research is a quantitative descriptive research. The research sample was 15 students who took part in table tennis extracurricular activities. The results of this study are the forehand service skills of students with good classification as many as (3) people (20%), moderate classification (9) people (60%), poor classification as many as (3) people (20%). While the backhand service skills are very good classification students as many as (1) people (7%), good classification as many as (4) people (27%), moderate classification (8) people (53%), poor classification as many as (2) people ( 13%). Thus, it can be concluded that the results of the forehand and backhand service level of table tennis students who participate in table tennis extracurricular activities at SMP Negeri 19 Palembang can be categorized as moderate with an average forehand service of 5.5, while the average result of backhand serving is 4, 8.

Detection Algorithm of Tennis Serve Mistakes Based on Feature Point Trajectory

To address the issue of high recognition error in conventional action error detection methods, this article proposes a game of tennis serve error action detection algorithm based on feature point trajectory. To begin, a feature detection model for tennis serve images is established, followed by segmentation of the tennis serve images’ multiscale features. Second, the path of the tennis serving image is effectively corrected, thereby raising the bar for tennis training and competition. Additionally, a visual feature acquisition system for tennis serving action is being developed using remote video monitoring in order to correct the path of the serving image during play. The corner mark of the serving action error point is determined using this algorithm, and the optimal modeling of the tennis serving image’s path correction is realized using the developed edge segmentation algorithm. The results of simulations demonstrate that the aforementioned algorithm improves real-time performance and accuracy, and that it can accurately track players’ visual edge information feature points while they are serving, conduct real-time evaluation and guidance via an expert system, effectively correct the tennis serving image path, and enhance your capacity for service.

Application Research and Analysis of Intelligent Sensors in Tennis Serving Technical Correction Equipment

The traditional tennis serving teaching correction method has been deeply rooted, and in the current teaching, the teaching method based on experience has been used for a long time, relying on the subjective consciousness of the coach to guide and supervise the technical movements of the athletes. It is said that to master the essentials of technical movements proficiently, it is necessary to carry out long-term and repetitive exercises according to the coach’s guidance. This situation seriously restricts the improvement of the level of teaching and training. To solve the above problems, the combined application of smart sensors and microsystem technology is used to Sensing identify and intelligently correct the player serve technology. This article in the presentation part initially sums up the movement catch innovation and tennis serve innovation and development; then, at that point, in the strategy part presents the objective following calculation and normal denoising handling calculation; and then, at that point, in the trial part presents the person choice, exploratory program, plan astute sensor handling framework, and trial examination. This article mainly introduces the application, research, and analysis of smart sensors in tennis server technology correction equipment, to reduce the burden on players and coaches. This article proposes target following calculations, normal denoising handling calculations, and so on, which are utilized to lead research investigating the use of savvy sensors in tennis server innovation adjustment hardware. The trial aftereffects of this paper show that the normal acknowledgment exactness of the savvy sensor is 91.14%, and the acknowledgment precision is high, which can be better applied to the tennis serve innovation revision hardware.

Comparison of the Tennis Serve Performance: A Case Study of an Elite Korean Tennis Player

Tennis serve performance is essential because high-quality serves increase the chance of winning points by reducing the opponent’s time to return accurately. This study aimed to compare the displacements of tennis serve between Hyeon Chung’s junior match in 2013 Wimbledon Open - Boys’ singles and himself as a professional player in 2018 to explore the difference according to expertise. Every frame was captured from a high-definition video, and tennis serve displacements were processed using a specialized written MATLAB program. It determined where the tennis serves landed on one of the T, Mid, or Wide sections in the service box. Chung’s serve as a junior player landed in the T section showed 23.95 %, whereas 46.3 % of a professional player’s serve appeared in the T section. More frequent serves to the T section were observed for experienced players, shortening its distance and placing it at the furthest distance from the opponent.

Tennis service teaching materials for student of faculty of sport science (FSS) – Universitas Negeri Padang (UNP)

This research is long-term research with research and Development. Development of tennis service training model for students which the author will develop is a service training model that has existed previously and then developed to be more varied, easy to understand and use the help of a feeder. The development of tennis service training is a program whose main objective is to help students learn one of the basic techniques of tennis easily and efficiently because tennis is a practical course that must be taken and must pass within 4 months of face-to-face lectures. Researchers adopted in stages as follows: the Borg and Gall development (R&amp;D) model which was modified into a simpler model, namely: 1) conducting research and collecting information data by providing needs analysis instruments to FSS UNP students; 2) making initial product designs tennis service practice guide; 3) evaluation of experts with qualifications, namely, 1 coaching expert and 1 tennis expert; 4) first product revision; 5) small group trial; 6) second product revision; 7) field trial (large group) by testing the results of the second product revision; 8) revision of the final product (if there are inputs or suggestions from and field trials)

Tennis Service Performance in Beginners: The Effect of Instructional Self-Talk Combined With Motor Imagery

The aim of this study was to investigate the effect of motor imagery (MI) combined with instructional self-talk on service performance in young novice tennis players. The participants were assigned to one of three groups: control, MI, or MI + self-talk. They performed a pretest (10 serves), participated in 5 days of intervention sessions, and finally performed a posttest similar to the pretest. During the intervention sessions, the participants performed 20 serves. The control group was not given any instructions other than verbal instructions on the steps of the serve. Before each serve, the MI group was instructed to imagine performing a successful serve towards the “correct” service box. The MI + self-talk group had to repeat the instructions during MI before serving. The results of this original study revealed that only the participants in the MI and MI + self-talk groups increased their service percentage of success and technical quality scores from pre- to posttest. In addition, at posttest, the participants of the MI + self-talk group had higher serve speeds and technical quality scores than the participants of the control and MI groups. The beneficial effect of using MI and/or self-talk during short tennis interventions and the practical applications are discussed.

A Novel Artificial Neural Network-Based Biomechanical Research on Elbow Injury of Tennis Serve

Tennis is a sport with a large age span. Its technology is complex. Factors such as tennis racket and service position will affect the effect of players holding the ball, but often the service posture and strength will affect the players’ elbow tendon. Once the service posture is wrong or the strength is too strong, it will cause irreversible damage to players. Therefore, the study of artificial neural network training on tennis elbow injury is of great significance. Based on artificial neural network, this paper studies the biomechanics of elbow injury in tennis service. Firstly, this paper expounds the concept and characteristics of tennis service technology and studies the injury of tennis players’ elbow. Then this paper studies the artificial neural network technology and uses the experimental comparison method to test the force generated by the two groups of tennis players from different angles. The results show that, in the professional group, the forearm is in the internal rotation state before and after hitting the ball, while the beginner group is generally in the external rotation state. It can be inferred that, under the constant collision force, the reversal force absorbed by the beginner group in the swing process is greater than that of the professional group, which will increase the load of the supinator muscle on the antipronation, which will damage the supinator muscle, which is also one of the causes of the “tennis elbow” disease.

Table Tennis classes at Junior High Schools utilizing the TPACK-Based Problem-Based Learning Model

The purpose of the study. Through the application of the TPACK - based PBL model , it can improve learning outcomes in the aspect of table tennis service material skills for junior high school students. Materials and methods. The method used is the Action Research Class method with two cycles, each cycle through the stages of planning, action, observation and reflection. The research subjects were 25 students. The data of this research is the result of learning table tennis service and analyzed by using the percentage technique of Sugiyono's theory. Results. Student learning outcomes in the aspect of skills have increased from cycle one to cycle two. aspects of service learning outcomes at the implementation stage the percentage obtained in the first cycle was only 74.3%, an increase in the second cycle to 97.7%. Likewise, at the final stage of cycle one, it was only 35%. students who complete have increased in the second cycle to 81%. Conclusions. The TPACK-based learning problem model makes learning more meaningful and the learning outcomes of Junior High School students experience classical mastery.

A Data Mining‐Based Model for Evaluating Tennis Players’ Training Movements

This paper uses data mining technology to mathematically model the training movements of tennis players, establish a three‐dimensional data information database of athletes utilizing depth imaging, analyze the data with data mining algorithms, and derive the results after comparative evaluation and analysis with a database of movement characteristics of tennis dribblers. This paper uses video observation and mathematical modeling to construct a tennis player training action evaluation model, which provides a reference basis for tennis players to improve and enhance their tactical level; it can also provide a reference for the development of sports training special theory of tennis projects and enrich the tactical diagnosis method of tennis matches. To improve the accuracy of 3D human pose estimation, this paper adopts a 3D skeleton point extraction method based on RGBD images; for the action alignment problem, this paper uses a dynamic time warping (DTW) algorithm; for the similarity measure, this paper gives a Pearson correlation coefficient method based on the joint point features of human parts. This paper aims to conduct a systematic theoretical analysis of tennis players’ training movements based on theories and methods such as system science theory and social network analysis. On this basis, the characteristics of tennis training technology development are analyzed from a combination of qualitative and quantitative perspectives, while the development of tennis player training is explored based on tracking observations of tennis player movement training, and finally, the attack and service characteristics of tennis training are analyzed to better provide some reference for the sustainable development of tennis.

Mechanical Energy Flow of the Racket Holding Arm in the Tennis Serve Focusing on the Energy Form&lt;sup&gt;＊&lt;/sup&gt;

Mechanical Energy Flow of the Racket Holding Arm in the Tennis Serve Focusing on the Energy Form&lt;sup&gt;＊&lt;/sup&gt;

Control of the Spin in a Tennis Serve Focusing on the Motion of the Upper Limb and Trunk&lt;sup&gt;*&lt;/sup&gt;

Control of the Spin in a Tennis Serve Focusing on the Motion of the Upper Limb and Trunk&lt;sup&gt;*&lt;/sup&gt;

Kontribusi Daya Ledak Otot Lengan Dan Kelenturan Terhadap Ketepatan Service Slice Tenis Atlet Pelatihan Tenis Lapangan (Ptl) Universitas Negeri Padang

This study aims to determine how big the contribution of arm muscle explosive power and waist flexibility to the accuracy of slice services for PTL UNP athletes. This research is a Classroom Action Research (CAR) with a sample of 20 people. These classroom action research steps include the preparation stage, diagnostics, and classroom action plan to solve problems. The procedures for this class action research are planning, implementing the action, observing, and reflecting in each cycle. This research uses an instrument. From the results obtained, flexibility contributes significantly to the accuracy of service of PTL tennis athletes at Padang State University, which is indicated by the results obtained, namely r count 0.47 &gt; r table 0.444, and a contribution of 22.09% is obtained. In conclusion, there is a jointly significant contribution between arm muscle explosive power and flexibility to the accuracy of the services of PTL tennis athletes, Padang State University; the results indicate this obtained R count 0.54&gt; R table 0.444, as well as the contribution of the two independent variables ( ) to the variable (Y) of 29.16%&#x0D; Keywords: Arm Muscle Explosiveness, Flexibility, Tennis Service Slice Accuracy