scholarly journals Emotions in young tennis players: a new tennis-specific scale

2021 ◽  
Vol 29 (85) ◽  
pp. 18-21
Author(s):  
Antonio Daino ◽  
Vanessa Costa ◽  
Riccardo Martori ◽  
Sergio Costa
Keyword(s):  
Tennis Players ◽  
The One ◽  
Specific Scale

To understand and assess responses related to the inadequate management of emotions in tennis competition, it has been developed the “Scale Perception Emotion Tennis” (SPET). This article will describe how the SPET tool could represent a first step in the direction of increasing awareness of the players and could be used by the coaches to compare their perception of the player’s emotions with the one of their athletes.

scholarly journals Analisis Antropometrik Dan VO2 Max Dengan Prestasi Pemain BKMF Tenis Meja FIK UNM

2019 ◽  
Vol 2 (2) ◽  
pp. 128
Author(s):  
Sahabuddin Sahabuddin
Keyword(s):  
Data Processing ◽  
Table Tennis ◽  
Vo2 Max ◽  
Chi Square ◽  
Tennis Players ◽  
Anova Test ◽  
Average Value ◽  
Significant Difference ◽  
The One ◽  
One Way Anova

ABSTRACTThe research objective was to determine the effect of anthropometrics and VO2 max on the performance of table tennis players. The research design or type of research used in this study is correlational. The population in this study were all BKMF FIK UNM table tennis players. The sample in this study were players. The data analysis used was univariate analysis and bivariate analysis. By using the Chi – Square statistical test with a significance level of α = 0.05. Based on the results of data analysis, it can be concluded that; (1) There is a significant anthropometric difference with the achievement of table tennis athletes at BKMF Tennis table FIK UNM. This is evidenced by the results of data processing through the One Way Anova test, the average value of each group at anthropometric <0.05 means that Ho is rejected, meaning that there is a significant difference between groups, (2) There is a significant difference between VO2 Max and the performance of table tennis athletes at BKMF Tenismeja. FIK UNM. This is proven by the results of data processing through the One Way Anova test, the average value of each group at VO2 Max <0.05 means that Ho is rejected, meaning that there is a significant difference between groups, and (3) There is a significant difference in the frequency of training with the achievement of table tennis athletes unit of tensimeja Unhas. This is proven by the results of data processing through the One Way Anova test, the average value of each group at training frequency <0.05 means that Ho is rejected, meaning that there is a real difference between groups. ABSTRAKTujuan Penelitian adalah untuk mengetahui pengaruh antropometrik dan VO2 max dengan prestasi pemain tenismejaDesain penelitian atau jenis penelitian yang digunakan dalam penelitian ini adalah korelasional. Populasi dalam penelitian ini adalah seluruh pemain tenismeja BKMF FIK UNM. Sampel dalam penelitian ini adalah pemain. Analisis data yang digunakan adalah analisa univariate dan analisa bivariate. Dengan  menggunakan  uji  statistic Chi – Square  dengan tingkat kemaknaan  α = 0,05. Berdasarkan hasil analisis data dapat disimpulkan bahwa; (1) Ada perbedaan yang signifikan antropometrik dengan prestasi atlet tenismeja pada BKMF Tenismeja FIK UNM. Hal ini terbukti dengan hasil pengolahan data melalui Uji One Way Anova diperoleh nilai rata-rata tiap kelompok pada antropometrik < 0.05 berarti Ho ditolak, berarti ada perbedaan nyata antara kelompok, (2) Ada perbedaan yang signifikan VO2 Max dengan prestasi atlet tenismeja pada BKMF Tenismeja FIK UNM. Hal ini terbukti dengan hasil pengolahan data melalui Uji One Way Anova diperoleh nilai rata-rata tiap kelompok pada VO2 Max < 0.05 berarti Ho ditolak, berarti ada perbedaan nyata antara kelompok, dan (3) Ada perbedaan yang signifikan frekuensi latihan dengan prestasi atlet tenismeja pada unit tensimeja Unhas. Hal ini terbukti dengan hasil pengolahan data melalui Uji One Way Anova diperoleh nilai rata-rata tiap kelompok pada frekuensi latihan < 0.05 berarti Ho ditolak, berarti ada perbedaan nyata antara kelompok.

Padrão de lesão musculosquelética em Jogadores de Padel - o impacto das Lesões do Cotovelo

2021 ◽  
Vol 12 (2) ◽  
pp. 17-20
Author(s):  
Margarida Ribeiro ◽  
◽  
Raquel Araújo ◽  
Sara Amaral ◽  
José Bissaia Barreto ◽  
...  
Keyword(s):  
Medical Treatment ◽  
Treatment Needs ◽  
Tennis Players ◽  
Lesion Location ◽  
Lesion Pattern ◽  
Racket Sport ◽  
Lateral Elbow ◽  
The One ◽  
Lateral Elbow Tendinopathy ◽  
Musculoskeletal Lesion

The specificities of paddle tennis as a racket sport may influence the lesion pattern. The aim of this study is to characterize the profile of musculoskeletal lesion in Paddle players and analyze its impact on absenteeism and medical treatment needs. The results point to the elbow being the most frequent lesion location. The frequency of epicondylalgia is similar to the one reported in recreational tennis players, but the formal diagnosis of lateral elbow tendinopathy is seldom established. Absenteeism due to sport related injury is significant.

scholarly journals Comparative Analysis of Return of Serve as Counter-attack in Modern Tennis

2014 ◽  
Vol 6 (12) ◽  
pp. 18-22
Author(s):  
Petru Eugen Mergheş ◽  
Beatris Simion ◽  
Adrian Nagel
Keyword(s):  
Comparative Analysis ◽  
Direct Observation ◽  
High Performance ◽  
Tennis Player ◽  
Lower Percentage ◽  
Tennis Players ◽  
The World ◽  
The One

Abstract High performance modern tennis is characterised by high dynamism, speed in thinking and action, precision and high technical and tactical skills. In this study, we used direct observation and statistical recording of nine matches during two competition years in the tennis players Roger Federer, Rafael Nadal and Andre Agassi. In these tennis players, we studied mainly the return of serve, one of the most important shots in tennis, together with serve, as first shots in a point. We have chosen the three tennis players because they are the best example of return of serve as shown by the matches recorded and interpreted. The study we have carried out shows that return of serve makes Agassi a winner in most matches. The high percentage in Federer’s serves makes his adversaries have a lower percentage in return of serve, which prevents them to win against his serve. High percentage in return of serve results in more points on the adversary’s serve and an opportunity to start the offensive point. After comparing the three tennis players mentioned above, we can see that the highest percentage of points won on return of serve belongs to Agassi, which ranks him among the best return of serve tennis players in the world. The tennis player with the highest percentage in return of service is the one who wins the match, which shows, once again, the importance of the return of serve. Return of serve can be a strong counter-attack weapon if used at its highest level.

scholarly journals The effect of coaching behaviors on tennis players and swimmers

2019 ◽  
Vol 23 (3) ◽  
pp. 126-131
Author(s):  
C. Cengiz ◽  
Ş. Serbes ◽  
Ö. Erdoğan ◽  
Ş. Dağ
Keyword(s):  
Survey Method ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Tennis Players ◽  
Mental Preparation ◽  
Coaching Behaviors ◽  
Behavior Scale ◽  
Coaching Behavior ◽  
The One ◽  
One Way Anova

Purpose . The purpose of the current research is to investigate tennis players and swimmers’ perceived coaching behaviors for sport with sport age. Material/Methods : A cross-sectional survey method was applied to tennis players and swimmers (Buyukozturk et al., 2012). Participants (nfemales=175; nmales=187) were selected from different tennis (n=122) and swimming (n=240) clubs in Canakkale, Istanbul and Hatay provinces. For data collection, a translated Turkish version (Yapar et al., 2014) of the Coaching Behavior Scale for Sport (CBS-S) (Côté et al., 1999) was used. The CBS-S includes 47 items and 7 sub-dimensions. The collected data were analyzed with descriptive and One-Way Analysis of Variance (ANOVA) statistics. The CBS-S sub-dimensions were evaluated with the sport age of tennis players and swimmers (p<.05). Results: According to the One-Way ANOVA, sport age was statistically significant in the sub-divisions of physical training and condition, technical skills, mental preparation, goal setting, competition strategies and personal rapport among tennis players (p<.05). Among swimmers, sport age was significant for only negative personal rapport (p<.05). Conclusions: Tennis players and swimmers’ perceived Coaching Behavior for Sport scores were evaluated as high. Sport age was significant for the Coaching Behavior for Sport sub-dimensions among tennis players.

Note on Selection of Coordinate Systems for Geodynamics

1975 ◽  
Vol 26 ◽  
pp. 395-407
Author(s):  
S. Henriksen
Keyword(s):  
Sea Level ◽  
The Other ◽  
Coordinate Systems ◽  
Mean Sea Level ◽  
The Earth ◽  
The One ◽  
Static Systems ◽  
Selection Of

The first question to be answered, in seeking coordinate systems for geodynamics, is: what is geodynamics? The answer is, of course, that geodynamics is that part of geophysics which is concerned with movements of the Earth, as opposed to geostatics which is the physics of the stationary Earth. But as far as we know, there is no stationary Earth – epur sic monere. So geodynamics is actually coextensive with geophysics, and coordinate systems suitable for the one should be suitable for the other. At the present time, there are not many coordinate systems, if any, that can be identified with a static Earth. Certainly the only coordinate of aeronomic (atmospheric) interest is the height, and this is usually either as geodynamic height or as pressure. In oceanology, the most important coordinate is depth, and this, like heights in the atmosphere, is expressed as metric depth from mean sea level, as geodynamic depth, or as pressure. Only for the earth do we find “static” systems in use, ana even here there is real question as to whether the systems are dynamic or static. So it would seem that our answer to the question, of what kind, of coordinate systems are we seeking, must be that we are looking for the same systems as are used in geophysics, and these systems are dynamic in nature already – that is, their definition involvestime.

Nucleation of Disorder in Fe3Al Alloys

1967 ◽  
Vol 25 ◽  
pp. 312-313
Author(s):  
P. R. Swann ◽  
W. R. Duff ◽  
R. M. Fisher
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Annealing Temperature ◽  
Antiphase Domain ◽  
Effect Of Temperature ◽  
Domain Structures ◽  
Transmission Electron ◽  
Domain Boundaries ◽  
Higher Temperature ◽  
The One

Recently we have investigated the phase equilibria and antiphase domain structures of Fe-Al alloys containing from 18 to 50 at.% Al by transmission electron microscopy and Mössbauer techniques. This study has revealed that none of the published phase diagrams are correct, although the one proposed by Rimlinger agrees most closely with our results to be published separately. In this paper observations by transmission electron microscopy relating to the nucleation of disorder in Fe-24% Al will be described. Figure 1 shows the structure after heating this alloy to 776.6°C and quenching. The white areas are B2 micro-domains corresponding to regions of disorder which form at the annealing temperature and re-order during the quench. By examining specimens heated in a temperature gradient of 2°C/cm it is possible to determine the effect of temperature on the disordering reaction very precisely. It was found that disorder begins at existing antiphase domain boundaries but that at a slightly higher temperature (1°C) it also occurs by homogeneous nucleation within the domains. A small (∼ .01°C) further increase in temperature caused these micro-domains to completely fill the specimen.

Fundamental Research into Thin Films in a Developing Country

1972 ◽  
Vol 30 ◽  
pp. 500-501
Author(s):  
J.A. Eades ◽  
E. Grünbaum
Keyword(s):  
Thin Films ◽  
Growth Process ◽  
Empirical Process ◽  
Nucleation And Growth ◽  
Research Groups ◽  
Film Research ◽  
Fundamental Research ◽  
Controlled Deposition ◽  
The One ◽  
The University

In the last decade and a half, thin film research, particularly research into problems associated with epitaxy, has developed from a simple empirical process of determining the conditions for epitaxy into a complex analytical and experimental study of the nucleation and growth process on the one hand and a technology of very great importance on the other. During this period the thin films group of the University of Chile has studied the epitaxy of metals on metal and insulating substrates. The development of the group, one of the first research groups in physics to be established in the country, has parallelled the increasing complexity of the field.The elaborate techniques and equipment now needed for research into thin films may be illustrated by considering the plant and facilities of this group as characteristic of a good system for the controlled deposition and study of thin films.

STM studies of crystal growth

1991 ◽  
Vol 49 ◽  
pp. 374-375
Author(s):  
M. G. Lagally
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Chemical Vapor ◽  
Sputter Deposition ◽  
Field Of View ◽  
Scanning Tunneling ◽  
Wide Field ◽  
Tunneling Microscopy ◽  
Wide Field Of View ◽  
The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

Preparation of Electron Transparent Metal-Matrix Composites

1968 ◽  
Vol 26 ◽  
pp. 334-335 ◽  
Author(s):  
M. R. Pinnel ◽  
A. Lawley
Keyword(s):  
Stainless Steel ◽  
Load Transfer ◽  
Volume Fraction ◽  
Steel Wire ◽  
Initial Step ◽  
Interfacial Region ◽  
Matrix Composites ◽  
Specific Test ◽  
The Matrix ◽  
The One

Numerous phenomenological descriptions of the mechanical behavior of composite materials have been developed. There is now an urgent need to study and interpret deformation behavior, load transfer, and strain distribution, in terms of micromechanisms at the atomic level. One approach is to characterize dislocation substructure resulting from specific test conditions by the various techniques of transmission electron microscopy. The present paper describes a technique for the preparation of electron transparent composites of aluminum-stainless steel, such that examination of the matrix-fiber (wire), or interfacial region is possible. Dislocation substructures are currently under examination following tensile, compressive, and creep loading. The technique complements and extends the one other study in this area by Hancock.The composite examined was hot-pressed (argon atmosphere) 99.99% aluminum reinforced with 15% volume fraction stainless steel wire (0.006″ dia.).Foils were prepared so that the stainless steel wires run longitudinally in the plane of the specimen i.e. the electron beam is perpendicular to the axes of the wires. The initial step involves cutting slices ∼0.040″ in thickness on a diamond slitting wheel.

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