PENGEMBANGAN ALAT LATIHAN KETEPATAN SASARAN FOREHAND DRIVE PADACABANG OLAHRAGA TENIS LAPANGAN TAHUN 2021

Tennis court is a small ball game. Playing tennis court is a sport that is almost the same as playing table tennis and badminton, having the same goal of hitting the ball over the net so that it reaches the opponent's area. The game of tennis court is played by one or a pair of players facing across the net. This research is aimed at developing forehand drive training aids in tennis athletes. Forehand drive training aids in tennis court are first validated by 6 experts, 2 material expert in sports, 2 expert in the field of equipment / media, 2 expert field coach. The results of the small group trial involved 3 experts, 1 material expert with an assessment result of 85%, 1 trainer expert 84% and 1 media expert 85% it can be concluded that they meet the criteria to be continued in large group trials. It can be concluded that the results of large group trials meet the criteria to be used in assisting forehand drive exercises in tennis court

Communication tips for juniors

Tennis in modern times is an industry that integrates sport, entertainment and business together. Nowadays, a junior tennis player is not limited to what they do on the tennis court. The junior player must be ready to face other responsibilities, among which are the media and commercial related activities.

Development of android based augmented reality video for tennis courts learning

This research aims to develop an android-based augmented reality application called AR Tennis. The resulted product is used as a medium for learning tennis courts courses. The AR Tennis application helps students understand the illustrations contained in courts tennis textbooks. The picture in the book which is originally only a silent illustration, with the help of the AR Tennis application, the image will move. The method used is MDLC (Multimedia Development Life Cycle). Testing the application using the blackbox method and the results are all components of the application function properly. From the results of the assessment of learning media experts obtained a value of 97.6 with a very good category. From the expert on tennis material, the score is 89.2 with a good category. And trials for students who take part in tennis court scored 92.14 in the appropriate category for use. Augmented reality technology is still not popular in the field of education. But going forward this technology will be very helpful in any study in the education.

Electronic tennis officiating: low cost, accurate and reliable solutions

The goal of this project was to research an electronic tennis officiating system that was low cost, accurate, and reliable. To do this, professional practices and literature were reviewed to identify what was already known and being implemented in the market. A basic proof of concept, in the form of a foot fault detecting system, was built in order to find out if a larger system could realistically be built. Then, a thorough investigation of components, including sensors, microcontrollers, wireless devices, cases, holders, and alert systems was performed to better understand the underlying technologies and suitability in a tennis officiating setting. Sensors were tested on a full-scale tennis court to identify the best possible option for a final design based on accuracy, cost, ease of use, set-up time, reliability, and size. Additionally, a plan to develop and commercialize the system was examined, taking into consideration relevant costs and restraints. Finally, a scale model of the full system was put together, showcasing the components previously studied and providing end users with an idea of how it would work.

Electronic tennis officiating: low cost, accurate and reliable solutions

The goal of this project was to research an electronic tennis officiating system that was low cost, accurate, and reliable. To do this, professional practices and literature were reviewed to identify what was already known and being implemented in the market. A basic proof of concept, in the form of a foot fault detecting system, was built in order to find out if a larger system could realistically be built. Then, a thorough investigation of components, including sensors, microcontrollers, wireless devices, cases, holders, and alert systems was performed to better understand the underlying technologies and suitability in a tennis officiating setting. Sensors were tested on a full-scale tennis court to identify the best possible option for a final design based on accuracy, cost, ease of use, set-up time, reliability, and size. Additionally, a plan to develop and commercialize the system was examined, taking into consideration relevant costs and restraints. Finally, a scale model of the full system was put together, showcasing the components previously studied and providing end users with an idea of how it would work.

Reliabilitas test-retest dyer tennis test revision

Banyak faktor yang mempengaruhi pencapaian prestasi olahraga, salah satu faktor yang mempengaruhi pencapaian prestasi pada cabang olahraga tenis lapangan adalah keterampilan dalam memukul bola. Instrumen tes yang valid dan reliabel diperlukan untuk mengetahui tingkat keterampilan pukulan untuk menentukan dan memantau hasil latihan. Tujuan penelitian ini adalah untuk mengetahui reliabilitas tes akurasi pukulan tenis lapangan menggunakan Dyer Tennis Test Revision. Pemilihan Dyer Tennis Test Revision sebagai intrumen tes pengukuran keterampilan akurasi pukulan tenis disesuaikan dengan subjek penelitian yaitu petenis pemula mahasiswa. Sembilan puluh tujuh mahasiswa pemula (51 laki-laki dan 46 perempuan) yang mengambil mata kuliah tenis lapangan menjadi subjek dalam penelitian ini. Test retest digunakan dalam penelitian ini. Hasil analisis product moment menunjukkan bahwa nilai r adalah 0,975. Hasil terebut bermakna bahwa Dyer Tennis Test Revision dapat diandalkan untuk mengukur unjuk kerja keterampilan tenis berbasis keakuratan. Dyer Tennis Test Revision juga merupakan alat ukur yang mudah dan murah yang dapat digunakan guru/dosen/pelatih untuk memantau kemajuan pemain.Test-retest reliability for dyer tennis test revisionAbstractMany factors affect sports performance, one of the factors that affect performance in tennis is the skill in hitting the ball. A valid and reliable test instrument is needed to determine the skill level of the stroke to determine and monitor the results of the training. The purpose of this study was to determine the reliability of the hitting tennis accuracy test using the Dyer Tennis Test Revision. The choice of Dyer Tennis Test Revision as a test instrument for measuring the accuracy of tennis strokes was adjusted to the research subject, namely student novice tennis players. Ninety-seven (beginner students (51 male and 46 female) who took tennis court courses were the subjects in this study. The retest test was used in this study. The results of the product moment analysis show that the value of r is 0.975. These results mean that the Dyer Tennis Test Revision can be relied upon to measure the performance of tennis skills based on accuracy. Dyer Tennis Test Revision is also an easy and inexpensive measuring tool that teachers / lecturers / coaches can use to monitor player progress.

Let's go back to tennis! Playing tennis safe for everyone's health

This article, which is based on contributions from coaches and specialists, shares some proposals and suggestions that will allow the return to tennis activity in the best possible way. The information provided is structured into prior considerations, considerations before entering the court, development of tennis sessions and the end of the activity. We hope that these proposals will make it easier for coaches to return to the tennis court.

Technical analysis of adaptive neuron fuzzy intelligent system in tennis serve

Serving is the most important hitting technique in tennis, and a good service receiving can instantly reverse the active and passive relationship between serve and receive on the tennis court, and control the rhythm of the court. The purpose of this study is to use an adaptive neuron fuzzy intelligent system to analyze some techniques of tennis serve. In this study, eight male players from the school tennis team were selected as the experimental subjects, whose sports level was above the national tennis level II. Ten weeks before the simulation test, the training time and frequency of 8 subjects were the same. In other words, 5 times a week, 2.5 hours±0.5 hours. The work engineering of adaptive fuzzy system firstly, in the off-line modeling stage, the adaptive fuzzy system uses the rule self splitting technology to generate the initial fuzzy rules, and uses the improved adaptive neural network algorithm to optimize the calculation; then according to the error between the system input and the predicted output, the independent variable is adjusted and replaced; at the same time, the adaptive fuzzy system is further used for calculation In the process of tennis serving, the nonlinear control variables are obtained online and applied to the fuzzy system for control. Next, in the experiment, the system was used to record the body’s movement and service scores during service. The experimental results show that during the service process, the maximum trunk torsion amplitude can reach 48.26 ° and the minimum is only 5.41 ° and the service score accounts for 81.41% and 80.47% of the total scores of the two sections respectively. This shows that the fuzzy system in this study can effectively analyze the service posture and score of athletes. It is concluded that the accurate calculation and analysis of tennis serve by adaptive neuron intelligent fuzzy system in this study is conducive to improve the tennis serviceability and competition performance of players. This research has made a certain contribution to the intellectualization of sports.

Distribution and Health Risk Assessment of Some Trace Elements in Runoff from Different Types of Athletic Fields

Environmental risk of heavy metals and metalloids in athletic fields has raised people’s attention in the recent years. Seven trace elements, including metals and metalloids, were detected in the runoff of five typical athletic fields in the university campus under three rainfall events. Except for Cr, the total concentrations of Zn, Pb, Cu, Mn, Cd, and As in artificial turf runoff are the highest among five athletic fields, followed by that of plastic runway. The concentration and first flush effect of trace elements are followed in the order of 1st > 2nd > 3rd rainfall events. The strongest correlations between metals and metalloids were observed in the tennis court runoff, while the artificial turf shows the least. The release of trace elements could be directly from the surface materials and particles on the athletic field and influenced by the comprehensive factors including surface materials, rainfall events, and pollutant characters. Pollution risk assessment shows that the pollution extent of the five types of athletic field is at least “moderate” and follows the order of artificial turf > basketball court > plastic runway > badminton court > tennis court. Pb shows the highest pollution level, while Cr shows the highest healthy risk. The results can provide a theoretical basis for runoff pollution control and safety use of athletic fields.

DIFFERENCES LEARNING OUTCOMES AT THE FOREHAND GROUNDSTROKES BEGINNER ATHLETES

The purpose of this study was to determine the differences in the results of learning the skills of groundstrokes forehand tennis in novice athletes by using two different forms of learning media, namely demonstration media and video media. This research is an experimental research which was conducted in the city of Bengkulu in the province of Bengkulu in 2016. The population of this study was the 5th semester students who were new to tennis court, amounting to 20 students. The research sample used a total sample, the sample was divided into two groups, the first group used demonstration media and the second group used video media. Data were collected through tests and measurements of the skills of tennis groundstrokes. The results of data analysis with the t test with the SPSS 21 program show a coefficient of 0.048, this price is smaller than the coefficient of 0.05, so from this comparison it can be concluded that there is a difference in learning outcomes of tennis forehand grounstroke skills using demonstration media with media. video.