Dissertations / Theses on the topic 'Tennis'
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Verhaar, Johannes Albertus Nicolaas. "Tennis elbow." Maastricht : Maastricht : Universitaire Pers Maastricht ; University Library, Maastricht University [Host], 1992. http://arno.unimaas.nl/show.cgi?fid=5721.
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Goodwill, Simon Richard. "The dynamics of tennis ball impacts on tennis rackets." Thesis, University of Sheffield, 2002. http://etheses.whiterose.ac.uk/12877/.
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A model of a tennis ball impact on a tennis racket has been developed in this study. An experimental investigation was conducted to detennine the dynamic properties of several different tennis balls. The balls were propelled at a piezoelectric force platform and the force acting on the ball was sampled, along with the ball rebound velocity. A visco-elastic model of this impact was developed and a set of model parameters were determined empirically for each ball type. The values of these parameters were independent of the ball impact velocity. The next stage of the study involved an experimental investigation of a ball impact on a head clamped tennis racket. In this experiment, tennis balls were propelled at the geometric string centre of a tennis racket. High speed cinematography was used to determine the ball and stringbed deformation during impact, and speed gates were used to measure the ball rebound velocity. A visco-elastic model of this impact was developed. The ball component of this model was identical to that for a model of a ball impact on a rigid force platform. The model parameter for the stringbed component was obtained from a simple quasi-static compression of the stringbed in which the applied force and resulting deformation were measured. The final stage of this study involved an investigation of the impact between a tennis ball and a freely supported tennis racket (this support method has been shown to be equivalent to a player gripping the tennis racket). In these experiments, the ball, stringbed and racket deformation were measured during impact, along with the velocity of the ball and racket after impact. A model was developed to simulate this impact in which it was assumed that the racket acted as a onedimensional flexible beam. The models which have been developed in this study are advancements of those which have been used in previously published literature. Experimental data was used to assess the accuracy of the results which were calculated by the models. An excellent correlation was found between the data calculated by the model and that measured experimentally.
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Yan, Fei. "Tennis ball tracking for automatic annotation of broadcast tennis video." Thesis, University of Surrey, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441906.
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Li, Wing-fung. "Tennis anticipation study /." View the Table of Contents & Abstract, 2005. http://sunzi.lib.hku.hk/hkuto/record/B32222348.
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Steele, Carolyn. "Tennis ball degradation." Thesis, Loughborough University, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504041.
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Despite anecdotal evidence of changes to tennis ball characteristics and play properties, little research has been directed towards understanding the causes and effects of tennis ball degradation. Improved racket technology and player fitness have contributed to an increase in the speed of the game, yet balls have seen few advancements over the same period. There are several obvious factors contributing to tennis ball degradation: natural pressure loss in pressurised balls, changes to the cloth covering due to court and racket impacts, and precipitation and environmental factors. As recent tennis research has focused on the new balls, there is a need to investigate other ball conditions present in the game of tennis. This thesis provides a structured investigation into the causes and effects of ball degradation, an objective assessment of the effects of degradation on ball performance, and incorporates subjective perceptions of all aesthetics and play properties noted by players. Particular attention is given to ball fuzziness. Excessive fuzziness can occur from manufacturing variability, court and racket interactions, and environmental conditions - though there is currently no standardised method to assess ball surface condition. An objective measure of ball fuzziness has been developed and used in the analysis of nearly 4000 individual ball images. The effects of court and racket impacts, precipitation, natural pressure loss, and repeated impacts have been analysed for their effects on ball degradation. An assessment of ball performance utilised ball impact and aerodynamic data to determine significant differences between balls and develop an improved ball trajectory model.
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Li, Wing-fung, and 李永豐. "Tennis anticipation study." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2005. http://hub.hku.hk/bib/B45013883.
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Schneider, Scarlett K. "Tennis operations manual." Master's thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-12232009-020125/.
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Buscombe, Richard. "Interpersonal perception in tennis." Thesis, University of Chichester, 2010. http://eprints.chi.ac.uk/811/.
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The primary aim of the present thesis was to investigate the role that individual and situational factors play in moderating the impact that pre-event expectancies have on judgements of a tennis player's performance. The current programme of research utilised a between subjects design with competitive tennis players (Studies 1 and 2) and undergraduate volunteers (Studies 3, 4 and 5) being assigned to one of four experimental conditions in each study. The results of Study 1 supported past research findings (Buscombe et al., 2006) confirming the role that body language plays in influencing the impressions formed of tennis players. However, the results did not demonstrate expectancy effects with early judgements of a performer failing to influence subsequent ratings of that individual's play. Study 2 found that the participants' level of trait confidence and trait anxiety did not moderate the impact of body language on judgements of performance. Study 3 demonstrated an interaction between body language and time pressure (F(l, 53)=12.00, p=.OOl) such that when under time pressure the participants rated the target's play more favourably having previously viewed the player displaying positive (M=42.76, SD=7.25) as opposed to negative (M=24.2S, SD=5.lS) body language. As such, it was concluded that time pressure may serve to moderate expectancy effects in sport. Study 3 also indicated that a perceiver's dispositional need for closure did not exert any influence over judgments of the performer. Study 4 demonstrated that increasing the participants' accountability for their judgements did not moderate expectancy effects. However, in line with the results of Study 3, the player's body language was seen to influence ratings of that individual's performance. Employ a reallife target performer, Study 5 demonstrated that prior knowledge of the target player's recent win/loss record influenced the participants' subsequent ratings of that individual's performance (F(l, llS)=lO.72,p=.OOl). Specifically, the participants' ratings of play were more favourable having been presented with a positive (M=41.7, SE=.S7), as opposed to a negative (M=37.74, SE=.S3) prior playing record for the performer. Overall, the thesis indicates that expectancy effects are evident in sport and that the length of time permitted to a perceiver to form a judgement of an athlete may moderate these effects. This thesis provides the first structured examination in the extant literature of the role that individual and situational factors play in moderating expectancy effects in sport. Furthermore, the thesis provides the first indication that expectancy effects may be witnessed in real-life contests between two sports performers.
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Smeeton, Nicholas James. "Anticipation skill in tennis." Thesis, Liverpool John Moores University, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438787.
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Teske, Karyn Mullholand. "Alternative Assessment in Tennis." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/35427.
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The purpose of this study was to develop two valid and reliable alternative assessment tasks based on the United States Tennis Association (USTA) Schools Program Curriculum. These assessments might then be used to determine the effectiveness of the USTA Schools Program Curriculum as taught in selected schools.
The two alternative assessment tasks developed for this study were based on the goals and objectives of the USTA Schools Program Curriculum. The first task required subjects to work in groups of three to create a video explaining and demonstrating basic tennis skills. The second task required subjects to work individually to develop a booklet of basic tennis skills. Scoring rubrics were also developed based on the goals and objectives of the USTA Schools Program Curriculum. The rubrics contained descriptions that would serve as the basis for judging subject products.
Subject products were collected, coded, and then scored by trained raters. Raters were trained extensively in order to retain reliability. Three types of reliability methods (intra-rater, inter-rater, and subject) were used to determine the reliability of the assessment tasks, and they were analyzed by calculating rater agreement. A criterion score of .85 exact rater agreement was considered acceptable reliability.
Two types of validity were determined as well. Construct validity was determined by analyzing the results of subjects' products to determine whether the data supported the hypothesis for this study. Content validity was determined by analyzing the response of a USTA professional concerning the content of the assessment tasks and rubrics.
The results of this study supported the hypothesis that it was possible to develop valid and reliable alternative assessment tasks based on the United States Tennis Association Schools Program Curriculum.Master of Science
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Stiles, Victoria Helen. "The biomechanical assessment of tennis surface cushioning properties during a tennis specific movement." Thesis, University of Exeter, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414248.
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Stickney, David. "(Non-surgical) epicondylitis rehabilitation a systematic review /." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5727.
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Ahmadi, Amin. "Using MEMS inertial sensors to monitor and assess the performance of tennis serve." Thesis, Griffith University, 2010. http://hdl.handle.net/10072/366864.
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In recent years, there has been a growing interest in using Micro Electro Mechanical Systems or MEMS inertial sensors (accelerometers and gyroscopes) in monitoring the performance of athletes. Although it is in experimental stage, the main features of the MEMS technology including miniaturized, light, inexpensive, real time environment monitoring, close to real time feedback were appealing for athletes, coaches, sports scientistic and engineers. The use of the MEMS inertial sensors gained popularity due to the ability to measure the linear and rotational movement of the body segments without hindering the performance of athletes in many sporting activities including swimming, golf, soccer and cricket.
This thesis investigates the feasibility of using wearable inertial sensors to monitor and assess the tennis players’ first serve. Suitable high rate gyroscopes were not developed at the time of the PhD candidature, therefore a novel technique to simulate the behaviour of gyroscopes (virtual gyroscopes) to measure the angular velocity of body segments was developed. This virtual gyroscope can be attached on any segment to measure the angular velocity of that segment. The virtual gyroscope proposed in this dissertation allows for extraction of simulated angular velocity data from virtually any point on an athlete’s body or equipment. The novel one-dimensional virtual gyroscope can also measure angular velocities of any range, as opposed to real gyroscope sensors which suffer from limited measurement range.
This novel technique was applied to measure the upper arm internal rotation (one of the main contributors of the tennis serve with approximately 54% contribution) of athletes during the first tennis serve. Wrist flexion and shoulder rotation contribute approximately 31% and 10% respectively, were also measured using common vector based techniques. The results were verified against the real gyroscope and found to have a relationship and follow the same trends ((r = 0.9470, p < 0.0001), (r = 0.98914, p < 0.0001), (r = 0.8734, p < 0.0001) for the upper arm internal rotation, wrist flexion and shoulder rotation respectively).
Additionally, the use of accelerometers to detect the kinematic chain and virtual gyroscopes to assess the players from different skill levels was investigated. The peak values of the upper arm internal rotation, wrist flexion, and shoulder rotation just before impact were measured and used to categorize athletes in different levels from amateur to elite. It was shown that all the three parameters as well as the racquet head speed increased as the level of proficiency of the subjects increased. A line ( ) was fit to the scatter data containing the upper arm internal rotation, wrist flexion, and racquet head speed. The fit line is a function of upper arm rotation and wrist flexion. It was shown that the fit line can be used as a potential skill improvement tool to provide feedback on which variables (upper arm internal rotation, wrist flexion or shoulder rotation) needed to be improved. Therefore, it is envisaged that gyroscope sensors could be used for skill assessment and skill improvement for a first tennis serve. These results have great potential benefit for athletes to use non-invasive wearable inertial sensors to monitor and enhance their performance during training sessions on the tennis court.Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Information and Communication Technology
Science, Environment, Engineering and Technology
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Hallgren, Frej. "Krav och kapacitetsanalys för tennis." Thesis, Gymnastik- och idrottshögskolan, GIH, Tränarlänken, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-1371.
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Durand, Paul. "L'introduction du tennis à l'école." Lyon 2, 1991. http://www.theses.fr/1992LYO20039.
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A partir de la médiatisation du tennis, on constate son introduction à l'école, dans les cours d'éducation physique. A mi-chemin entre une vision idéologique d'une culture commune par les mass-média et la forme la plus restreinte qui ferait du tennis, un pur construit cognitif, nous avons envisagé le concept de représentation, où les conditions économiques, culturelles et psychologiques sur lesquelles s'appuie l'individu pour exister, déterminent en partie, la perception qu'il a du tennis. Les enseignants d'éducation physique et sportive, semblent ne pas se résigner dans la transposition didactique qu'ils opèrent, à perdre la richesse de la culture sportive. Or nécessairement pour entrer et se maintenir à l'école, le tennis doit revêtir les aspects et les signes distinctifs de l'orthodoxie scolaire. Des stratégies de transformation des représentations pour adapter les conduites d'enseignement sont envisagéesSince tennis became much publicized by the media, the fact is it has been introduced into the physical education curriculum in schools. Half way between an ideological vision of a cultural background spawned by the mass-media and a more restricted form which would turn tennis into a sheer cognitive construct, we suggest the concept of representation in which the economic, cultural and psychological conditions which individuals rely upon in order to exist, partly determine their perception of tennis. Physical education teachers seem reluctant to give up the rich sporting culture when carrying out the didactic transposition. And yet tennis has to assume the aspects and distinctive signs of school orthodoxy in order to be admitted and maintened at school. So strategies aiming at modifying representations have been considered so as to adapt teaching behaviours
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CARLIER, ERIC. "Incidents et accidents du tennis." Lille 2, 1988. http://www.theses.fr/1988LIL2M369.
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Strauss, Daniella Nicole. "Shoe-Surface Interaction in Tennis." Thesis, Leeds Beckett University, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.521782.
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Espinoza, Victor. "Gesture Recognition in Tennis Biomechanics." Master's thesis, Temple University Libraries, 2018. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/530096.
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Electrical and Computer EngineeringM.S.E.E.
The purpose of this study is to create a gesture recognition system that interprets motion capture data of a tennis player to determine which biomechanical aspects of a tennis swing best correlate to a swing efficacy. For our learning set this work aimed to record 50 tennis athletes of similar competency with the Microsoft Kinect performing standard tennis swings in the presence of different targets. With the acquired data we extracted biomechanical features that hypothetically correlated to ball trajectory using proper technique and tested them as sequential inputs to our designed classifiers. This work implements deep learning algorithms as variable-length sequence classifiers, recurrent neural networks (RNN), to predict tennis ball trajectory. In attempt to learn temporal dependencies within a tennis swing, we implemented gate-augmented RNNs. This study compared the RNN to two gated models; gated recurrent units (GRU), and long short-term memory (LSTM) units. We observed similar classification performance across models while the gated-methods reached convergence twice as fast as the baseline RNN. The results displayed 1.2 entropy loss and 50 % classification accuracy indicating that the hypothesized biomechanical features were loosely correlated to swing efficacy or that they were not accurately depicted by the sensor
Temple University--Theses
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Humblot, Catherine. "L'environnement familial et institutionnel de la future élite tennistique." Paris 5, 1990. http://www.theses.fr/1990PA05H017.
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Yin, Fangyan. "Grow tennis in China : How to popularize professional tennis tournaments in China through customer engagement." Thesis, Linnéuniversitetet, Institutionen för marknadsföring (MF), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-76970.
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As a highly commercialized sport, tennis is growing rapidly in the Chinese market. With robust economic growth and various supports from the government, China is becoming more and more valuable in the eyes of professional tennis tournament organizers. Nevertheless, those tournaments do not receive the same amount of popularity as they do in other countries like US and Japan. The purpose of this paper is finding effective ways to improve the popularity of professional tennis tournaments in China from the aspect of customer engagement. Comments from people who are closely involved in the events will be the most relevant empirical material for this study, because they are the group engaged in, or most likely to be engaged in the event. The comments collected will be coded and compared with theories in the field of customer engagement. A conceptual model and practical suggestions will be provided as the result of study.
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Cunha, Vivian Costa Resende 1989. "Efeito da suplementação de citrato de sódio sobre o desempenho de tenistas." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/244489.
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Orientadores: Caroline Dário Capitani, Marcelo Saldanha AokiDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Ciências Aplicadas
Made available in DSpace on 2018-08-27T04:18:29Z (GMT). No. of bitstreams: 1 Cunha_VivianCostaResende_M.pdf: 1876869 bytes, checksum: ae33265fb59060e2348349bf854e1379 (MD5) Previous issue date: 2014
Resumo: O presente estudo teve os seguintes objetivos: caracterizar as demandas fisiológicas de diferentes rotinas de treinamento e, avaliar o efeito da suplementação de citrato de sódio sobre o desempenho de habilidades específicas do Tênis após uma simulação de partida. Dez jogadores de Tênis juvenis, do sexo masculino (17,0 ± 1,2 anos; estatura: 176,7 ± 5,2 cm; peso: 68,4 ± 7,9 kg; gordura corporal: 11,7 ± 1,4%) participaram dos estudos. No primeiro estudo foram realizadas quatro rotinas de treinamento, cada qual com seis pontos. As rotinas se diferiram entre si pelo número de rebatidas por ponto (duas, quatro, sete e dez rebatidas por ponto). Foram avaliados frequência cardíaca (FC), percepção subjetiva de esforço (PSE) e concentração de lactato ([La]) após o primeiro, terceiro e sexto ponto de cada rotina. O segundo estudo consistiu na suplementação de citrato de sódio (0,5 g.kg-1 de peso) ou placebo - NaCl (0,1 g.kg-1 de peso). Após 120 minutos da ingestão do suplemento, foram realizados testes de habilidades específicas no Tênis (Loughborough Tennis Skill Test ¿ LTST e Repeated Sprint Ability Shuttle Test ¿ RSA) antes e após a simulação de uma partida de 60 minutos. Observou-se que todos os parâmetros avaliados no primeiro estudo (FC, PSE e [La]) aumentaram progressivamente durante as rotinas de treinamento, à medida que se aumentava o número de rebatidas por ponto, indicando que rotinas de treinamento com sete e dez rebatidas por ponto induziram respostas maiores associadas ao nível de estresse do que observado nas rotinas mais curtas. No segundo estudo observou-se aumento significante (p<0,05) da [HCO3-] e do excesso de base no grupo suplementado com citrato de sódio comparado ao placebo. Após a simulação de partida houve aumento da [La] e de pH no grupo suplementado com citrato de sódio ([La]: 5,46 mmol.L-1; pH: 7,48) comparado ao grupo placebo ([La]: 2,28 mmol.L-1; pH: 7,34). A capacidade de sprints repetidos avaliada pelo RSA não apresentou diferença (p>0,05) entre os testes pré e pós simulação de partida. Apesar do total de golpes desenvolvidos pelos jogadores não apresentarem diferença significante (p>0,05) antes e após a simulação de partida, observou-se declínio (p<0,05) na consistência dos golpes para o grupo placebo (pré: 53,5%; pós: 40,4%) quando comparado ao grupo suplementado com citrato de sódio (pré: 50,2%; pós: 58,5%). Portanto, sugere-se que a suplementação de citrato de sódio pode prevenir o declínio do desempenho das habilidades específicas do Tênis, após uma simulação de partida
Abstract: This study had the following objectives: To characterize the physiological demands of different training routines and evaluate the effect of sodium citrate supplementation on the performance of specific tennis skills after a simulated match. Ten young male tennis players (17,0 ± 1,2 years old; height: 176,7 ± 5,2 cm; weight: 68,4 ± 7,9 kg; body fat: 11,7 ± 1,4%) participated in the studies. In the first study, four training routines were performed, each with six points. The routines differed according to the number of hits per point (two, four, seven and ten hits per point). Heart rate (HR), rating of perceived exertion (RPE) and blood lactate concentration ([La]) were assessed after the first, third and sixth points of each routine. The second study consisted of supplementing with sodium citrate (0,5 g.kg-1 body weight) or placebo - NaCl (0,1 g.kg-1 wt). One-hundred and twenty minutes after taking the supplement, tests were performed for specific tennis skills (Loughborough Tennis Skill Test - LTST and Repeated Sprint Ability Test Shuttle - RSA) before and after simulating a match of 60 minutes. All parameters evaluated in the first study (HR, RPE and [La]) were found to increase progressively during training routines, as the number of hits per point increased, indicating that training routines with seven and ten hits per point were associated with higher levels of stress than for the shorter routines. The second study demonstrated a significant increase (p <0,05) in [HCO3-] and base excess in the group supplemented with sodium citrate, compared with placebo. After the match simulation, increases were observed in [La] and pH in the group supplemented with sodium citrate ([La]: 5,46 mmol.L-1; pH: 7,4), compared to the placebo group ([La]: 2,28 mmol.L-1; pH: 7,34). The ability to repeat sprints, as evaluated by RSA, did not differ (p > 0,05) between the pre and post match simulation. Although the total number of hits performed by the players was not significantly different (p>0,05) before and after starting the simulation, we observed a decrease (p<0,05) in the consistency of the hits in the placebo group (pre: 53,5%; post: 40,4%), when compared to the group supplemented with sodium citrate (pre: 50,2%; post: 58,5%). Therefore, we suggest that supplementation of sodium citrate may prevent the decline in performance of specific tennis skills after a simulated match
Mestrado
Nutrição
Mestra em Ciências da Nutrição e do Esporte e Metabolismo
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Oguchi-Chen, Fumiko. "Characteristics of thought processes and knowledge structures of Novice tennis players." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/28770.
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Performers of physical skills develop knowledge structures in which the content, structure and process of special skills as well as context information are represented (Allard & Burnett, 1985; Gardner, 1985; Vickers, 1986). In the teaching of sports and physical education we deal with complexly organized knowledge structures and mental operations and changes occur as one (students, athletes, teachers and coaches) progresses from the novice to expert levels. The differences between the knowledge representation of experts and novices were documented in many areas, such as chess (Chase & Simon, 1973), physics (Chi, Feltovich & Glaser, 1981), mathematics teaching (Leinhardt& Smith, 1985) and gymnastics (Vickers, 1986).
The basic purpose of this study was, for pedagogical reasons, to better understand the development of the novice performers' knowledge structure by exploring their thought processes in action. The focus was upon novice tennis players during the game situation. Four novice level volunteer students from a physical education tennis performance class were the subjects of this study. A multiple case study method utilizing both qualitative and quantitative data was employed. The qualitative method and procedure of stimulated recall (Grimmett, 1982; Housner & Griffey, 1985; Peterson, 1982; Tuckwell, 1980) was used to obtain verbal reports disclosing the novices' thought processes when reviewing the video tape segments of their play. Quantitative performance data using the CompuTennis scoring system were analyzed in order to verify the accuracy of the subject's comments during the analysis of their interview transcriptions. Moreover, field notes and two questionnaires completed multiple source data base in order to permit the analysis of a subject in all dimensions.
A description of what the players thought and felt during the interview in relation to their tennis performance was presented and the players' thought processes and knowledge structures were analyzed and interpreted in relation to the complex internal and external cues reported in particular game situations.
Diagrammatical summary of each case was presented as a representation of a player's thought processes and knowledge structures. As well, a novice player's thought processes and knowledge structures were discussed with a comparative view in relation to selected stage theories (Anderson,1982; Dreyfus & Dreyfus, 1986; Jewett & Mullan, 1977).
The present multiple cases revealed common themes across the cases of the novices as well as distinct individual differences in terms of the breadth, depth, organization and accessibility of the knowledges, working memory capacity and information processing efficiency (Kyllonen & Christal, 1989). Moreover, from the results of the study, developmental processes of compilation, composition and proceduralization of knowledges of action (Anderson, 1982) in the tennis game situation were discussed. Finally, the implications were discussed for the designs of instruction of skill performance.Education, Faculty of
Curriculum and Pedagogy (EDCP), Department of
Graduate
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Cazuc, Christophe. "La construction d'une carriere internationale : joueur de tennis professionnel. approche sociologique d'une profession au sein de neuf pays." Nantes, 2001. http://www.theses.fr/2001NANT3008.
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Cette these analyse le cheminement qui mene a la profession de joueur de tennis professionnel a travers une approche comparative entre neuf pays (allemagne, angleterre, australie, espagne, etats-unis, france, hollande, republique tcheque et suede). La methodologie s'est axee sur la collecte d'informations sur les deux premieres phases d'une carriere, au sens de goffinan dans asiles, c'est-a-direl'apprentissage, la phase pre-professionnelle, et l'exercice de la profession, la phase professionnelle les debuts de la carriere se deroulent au sein d'un espace local (la famille, le club et l'ecole de la ville de residence) puis les contraintes qu'exige la pratique du tennis de haut niveau obligent les joueurs les plus talentueux a se diriger vers des espaces de production des elites. Les debuts de la professionnalisation se font sentir tant sur le plan subjectif par la transformation des individus, que sur le plan des structures objectives, notamment, par une interruption prematuree de la scolarite et un elargissement de leur espace de competition. L'etape suivante concerne les debuts professionnels de la carriere de joueurs de tennis, c'est-a- dire les premieres experiences de joueursur les tournois professionnels que sont les circuits satellites et les futures, les categories d'epreuves ouvertes aux joueurs classes au-dela de la cinq-centieme place mondiale. Dans le dernier chapitre, notre approche traite de la vie quotidienne des joueurs de tennis professionnels << confirmes >>, ceux qui font partie de l'elite des cent premiers joueurs mondiaux. Quatre modeles de trajectoires se sont degages et plusieurs caracteristiques formelles (le coach, les deplacements, le programme, etc ) ont ete analysees. Cette recherche transnationale de la carriere des joueurs de tennis professionnels souligne que les formations sont organisees selon des logiques nationales qui conferent des caracteristiques specifiques au niveau du sens pratique tennistique. Ensuite, l'espace du tennis professionnel et international qu'est le circuit atp contribue a imposer une certaine dynamique qui homogeneise les comportements, la gestion du temps, la necessite d'un coach, etc. , mais les styles de jeu varies et divers apportent une certaine heterogeneite a cette corporation constituee d'une agglomeration d'individualites.
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Waser, Anne-Marie. "Sociologie du tennis : genèse d'une crise : 1960-1990 /." Paris : l'Harmattan, 1995. http://catalogue.bnf.fr/ark:/12148/cb35767401n.
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Ackered, Matilda. "Taktikanalys i tennis - de vinnande slagen." Thesis, Gymnastik- och idrottshögskolan, GIH, Tränarlänken, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:gih:diva-2230.
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Detta arbete innehåller en taktikanalys i tennis där syftet är att analysera vinnarslagen samt sammanställa hur fördelningen av placering och var ifrån de vinnande slagen slås. Vinnarslagen låg i fokus i denna analys samt var ifrån slagen slogs och var de placerades. Med hjälp av programmet Interplay-sports Analyzer pro 2.1 kunde variablerna analyseras. Matcherna som analyserades var en dammatch och en herrmatch båda från 2009; dammatchen från Australia Open och herrmatchen från US Open. DinaraSafina – Serena Williams 0-6, 3-6 (final) Roger Federer – Novak Djokovic 7-6, 7-5, 7-5 (semifinal) Resultaten visar att det är skillnad mellan herr och damspelare, trots att det handlar om toppspelare. Det vanligaste vinnarslaget bland herrarna (som denna analys visade) var helt klart forehand, jämfört med dammatchen där det var fifty-fifty, lika många vinnande forehand som backhand. De manliga spelarnas position vid ett vinnande slag var vanligast vid den gröna zonen, precis som hos de kvinnliga spelarna, men en avvikelse herrarna gör är att de använder sig av hela banan och det är vanligare att de placerar sig en bit in i banan och söker sig gärna framåt mot nätet för att avgöra på volley. Det ser man nästan aldrig att en kvinnlig spelare gör, de håller sig gärna på baslinjen och "spelar ut sin motståndare" där de slår det vinnande slaget. Serveess och serve + retur, där serveess är en serve som motståndaren inte nuddar och serve + retur är en serve som är för bra för att motståndaren ska kunna få in den på banan. Serve är ett moment i tennis som herrarna behärskar till fullo, och är ett så starkt vapen att det ibland är avgörande om spelaren vinner eller förlorar. Resultaten i denna analys visar på att damspelarna har lite att hämta från herrarna, när det gäller vinst på serve samt placering och hårdhet.
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Banwell, Guy. "Impulsive sound quality of tennis rackets." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13678.
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The sound radiated during a tennis impact has been shown to greatly influence the perception of 'feel' but has also been suggested to contribute to the perception of equipment quality, as is the case with many other consumer products. In an industry that is governed by design limitations, tennis racket manufactures are continually aiming to differentiate their products from their competitors' and the sound character of a racket is seen as one such method to do so. In order to control the sound radiated from a tennis racket it was first necessary to identify how a tennis racket radiates sound. Through a number of controlled player tests, involving groundstrokes and serves, the sound was recorded along with measurements of the physical vibrations excited in the frame. Analysis of the data revealed typical characteristics of the sound in the time and frequency domain. The sound was split into two sections to aid the analysis; an initial impulsive component that decayed very quickly and a ringing component that was of much lower amplitude but decayed at a much slower rate. The evolution of the frequency content over time was also investigated, however, the data provided much more information as to where each frequency component originated by analysing the data together with the experimental modal analysis data. The experimental modal analysis of a tennis racket was a vital stage in understanding which components of the racket were responsible for radiating the identified frequency component in the sound spectrum. The investigations identified frame bending modes, out-of-plane and inplane, as well as torsional modes, hoop modes and stringbed modes. To enable direct comparison between the natural frequencies excited during a tennis shot and the frequencies recorded from a freely suspended racket, the effect of the hand on the modal behaviour of the racket was analysed; experimental modal analysis data from a hand-gripped racket was compared with data generated by adding simulated mass to the modal model of the freely suspended racket. The first stringbed mode was identified as a key contributor to the sound of the racket, especially in the ringing component of the sound. Analysis of the physical vibrations in the frame following a tennis shot revealed that the first stringbed mode excited the frame of the racket, which is iv thought to be the reason why stringbed modes contribute to the sound more so than their surface area would suggest that they are capable of. Analysis of the relationship between subjective perceptions of players and calculated sound metrics suggest a negative correlation exists between the duration and loudness of a tennis shot and the appeal of the sound. Further investigations involving a jury to evaluate the appeal of a tennis impact sound, modified in terms of duration, revealed further evidence to support the theory that tennis impact sounds of greater duration are less appealing than those that decay quickly. This is the first study to investigate the sound radiated from a tennis racket and has identified how the sound is radiated from the racket and also suggests which parameters of the sound are considered appealing to tennis players. With this information it is possible to suggest design modifications that would influence the sound of a tennis racket in a predictable manner.
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O'Connell, Thomas. "Visual information processing : tennis volleying strategy /." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq25691.pdf.
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Rodrigues, Sergio Tosi. "Visuo-motor coordination in table tennis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ54807.pdf.
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Chadwick, Stephen George. "The aerodynamic properties of tennis balls." Thesis, University of Sheffield, 2003. http://etheses.whiterose.ac.uk/12839/.
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Several experimental procedures were developed to enhance the understanding of the aerodynamic properties of tennis balls. Four test methods were tried as quantitative assessments of the aerodynamic forces that act on tennis balls, whilst an additional two methods were introduced for qualitative purposes. A computational trajectory model was developed to predict the effect of any modifications to tennis balls proposed in the study. The test methods adopted utilised two different wind tunnels, projection devices, dropper devices, aerodynamic load cells and motion analysis techniques using high-speed digital cameras. Several different tennis balls were tested: some had the nap modified to investigate changes in aerodynamic forces that may occur during play, others were oversized to investigate the options available for slowing the game down. CD and CL profiles were obtained for a normal sized ball with unmodified nap and then used to develop a set of equations that enable the CD and CL of a tennis ball to be calculated at any speed and spin rate. When used in a trajectory model, a 6.5% larger ball was shown to decelerate 5% faster than a normal sized ball when projected with the same initial elevation angle, speed and spin rate. This results in the larger ball landing 1.5 metres shorter and taking more than 19ms longer to arrive at the receiver. Initial testing showed that the CD of all tennis balls with unmodified naps was similar and remained constant at around 0.53 up to a wind speed of around 63ms'. The nap of the tennis ball was modified to represent early wear characteristics (fluffed) and extensive wear characteristics (shaved). It was found that the CD of a ball with a fluffed nap is higher than that of a ball with an unmodified nap, which in turn is greater than the CD of a ball with a shaved nap. The CD of a ball almost twice the size of a normal tennis ball was found to be independent of Reynolds number up to 5x105, which is clear evidence that the boundary layer around a tennis ball turns turbulent at a low Reynolds number. The ball with the shaved nap was shown to be similar to a classic rough ball however, with boundary layer transition occurring at a low Reynolds number. The flow around a tennis ball was assessedu sing pressurep rofiles and smokep articles, and the separation of flow for all balls was shown to be near the poles. Pressure profile testing provided clear separation details, and showed how the pressure around the ball differs for subcritical and postcritical Reynolds number regimes. Flow through and over the fibres causes the elevated CD over and above that associated with separation at the apex of a sphere.
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Paridi, Konstantina. "Emotion regulation in elite table tennis." Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-43287.
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There is evidence suggesting that elite athletes cope better with high-intense negative emotions than the non elite athletes. It is unknown, though, whether elites reach such optimal levels because they have better emotion regulation skills (EReg) or a reduced emotional reactivity (EReact). The present study aimed at disentangling EReg and EReact processes using an experimental paradigm in table tennis players. Twenty-nine (14 elite and 15 non elite) table tennis players were tested using the International Affective Picture System (IAPS) to study their emotional responses after viewing low and high intense pictures; they were instructed to use different emotional regulation strategies (distraction or reappraisal) in the experimental phase. Regarding to emotional reactivity differences, results have showed that elite athletes’ negativity ratings were lower than those of the control group, where there were not any significant differences between men and women. Moreover the results about emotional regulation effectiveness showed that non-elite athletes and women responded more strongly to negative images than elite athletes and men but contrary to the emotion regulation hypothesis, no interaction between the group and the instruction was found as they were equally able to reduce negativity by employing emotion regulation strategies.Tidigare forskning visar att elitidrottare är bättre på att reglera hög-intensiva negativa känslor i jämförelse med icke elitidrottare. Det är fortfarande oklart om elitidrottare når dessa optimala nivåer pågrund av bättre emotionsreglering (EReg) eller en lägre emotionell reaktivitet (EReact). Föreliggande studies syfte är att försöka klargöra EReg och EReact processer, genom att använda en experimentell design hos bordtennis spelare. Tjugo nio (14 elit och 15 icke-elit) bordtennis spelare testades med hjälp utav International Affective Picture System (IAPS) för att undersöka deras emotionella responser efter att ha observerat låg och hög-intensiva bilder; de instruerades att använda olika emotion reglerings strategier (distraktion och reappraisal) i experiment fasen. Gällande emotionell reaktivitet visade Resultatet att elitidrottares negativa poäng var lägre än kontrollgruppen, det var inga signifikanta skillnader mellan män och kvinnor. Vidare visade resultat kring emotions reglering att icke-elitidrottare och kvinnor reagerade starkare på negativa bilder än elitidrottare och män, i kontrast till emotion reglerings hypotesen hittades ingen interaktions effekter mellan grupp och instruktionen vilket tyder på att grupperna var lika duktiga på att använda emotions reglerings strategier.
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Oldham, Kevin M. "Table tennis event detection and classification." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/19626.
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It is well understood that multiple video cameras and computer vision (CV) technology can be used in sport for match officiating, statistics and player performance analysis. A review of the literature reveals a number of existing solutions, both commercial and theoretical, within this domain. However, these solutions are expensive and often complex in their installation. The hypothesis for this research states that by considering only changes in ball motion, automatic event classification is achievable with low-cost monocular video recording devices, without the need for 3-dimensional (3D) positional ball data and representation. The focus of this research is a rigorous empirical study of low cost single consumer-grade video camera solutions applied to table tennis, confirming that monocular CV based detected ball location data contains sufficient information to enable key match-play events to be recognised and measured. In total a library of 276 event-based video sequences, using a range of recording hardware, were produced for this research. The research has four key considerations: i) an investigation into an effective recording environment with minimum configuration and calibration, ii) the selection and optimisation of a CV algorithm to detect the ball from the resulting single source video data, iii) validation of the accuracy of the 2-dimensional (2D) CV data for motion change detection, and iv) the data requirements and processing techniques necessary to automatically detect changes in ball motion and match those to match-play events. Throughout the thesis, table tennis has been chosen as the example sport for observational and experimental analysis since it offers a number of specific CV challenges due to the relatively high ball speed (in excess of 100kph) and small ball size (40mm in diameter). Furthermore, the inherent rules of table tennis show potential for a monocular based event classification vision system. As the initial stage, a proposed optimum location and configuration of the single camera is defined. Next, the selection of a CV algorithm is critical in obtaining usable ball motion data. It is shown in this research that segmentation processes vary in their ball detection capabilities and location out-puts, which ultimately affects the ability of automated event detection and decision making solutions. Therefore, a comparison of CV algorithms is necessary to establish confidence in the accuracy of the derived location of the ball. As part of the research, a CV software environment has been developed to allow robust, repeatable and direct comparisons between different CV algorithms. An event based method of evaluating the success of a CV algorithm is proposed. Comparison of CV algorithms is made against the novel Efficacy Metric Set (EMS), producing a measurable Relative Efficacy Index (REI). Within the context of this low cost, single camera ball trajectory and event investigation, experimental results provided show that the Horn-Schunck Optical Flow algorithm, with a REI of 163.5 is the most successful method when compared to a discrete selection of CV detection and extraction techniques gathered from the literature review. Furthermore, evidence based data from the REI also suggests switching to the Canny edge detector (a REI of 186.4) for segmentation of the ball when in close proximity to the net. In addition to and in support of the data generated from the CV software environment, a novel method is presented for producing simultaneous data from 3D marker based recordings, reduced to 2D and compared directly to the CV output to establish comparative time-resolved data for the ball location. It is proposed here that a continuous scale factor, based on the known dimensions of the ball, is incorporated at every frame. Using this method, comparison results show a mean accuracy of 3.01mm when applied to a selection of nineteen video sequences and events. This tolerance is within 10% of the diameter of the ball and accountable by the limits of image resolution. Further experimental results demonstrate the ability to identify a number of match-play events from a monocular image sequence using a combination of the suggested optimum algorithm and ball motion analysis methods. The results show a promising application of 2D based CV processing to match-play event classification with an overall success rate of 95.9%. The majority of failures occur when the ball, during returns and services, is partially occluded by either the player or racket, due to the inherent problem of using a monocular recording device. Finally, the thesis proposes further research and extensions for developing and implementing monocular based CV processing of motion based event analysis and classification in a wider range of applications.
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Arendt, Alexander [Verfasser]. "Cardio Tennis als präventives Gesundheitstraining : eine Studie zur Ermittlung der gesundheitsfördernden Wirkung von Cardio Tennis / Alexander Arendt." Köln : Zentralbibliothek der Deutschen Sporthochschule, 2018. http://d-nb.info/1182344895/34.
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Reid, Machar. "Loading and velocity generation in the high performance tennis serve." University of Western Australia. School of Human Movement and Exercise Science, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0002.
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[Truncated abstract] Shoulder injuries rank among the most prevalent and debilitating sustained by professional tennis players. The loads, or magnitude, location, direction, duration, frequency, variability and rate of force application, endured by tissues of the shoulder during stroke production, and more particularly the serve, are commonly implicated in shoulder joint injury (Chandler et al., 1992; McCann and Bigliani, 1994; Kibler, 1995). Indeed, past evidence points to these loads increasing along with serve velocity, as well as with varied segment use (Elliott et al., 2003). This dissertation therefore aimed to quantify hypothesised relationships between certain serve types and techniques, and shoulder joint loading among high performance able-bodied and wheelchair players. . . Of final note is that prospective 3D biomechanical examinations of shoulder joint motion in the tennis serve should consider placement of humeral triads distal to the biceps and/or triceps muscle belly. In comparison to markers placed at the mid-point of the humerus (i.e. as used in this thesis), these more distal triad positions appear to alleviate the spurious effects of soft tissue artefact thereby enhancing the accuracy of estimated long-axis rotation of the upper arm. Although the current representation of 3D humeral motion did not confound the comparisons made between serve types or techniques, it is likely that upper arm triads located just above the epicondyles of the humerus could have offered more insightful absolute comparisons to the literature. Further, the elaboration of a joint coordinate system at the shoulder to provide for the more meaningful and functional expression and interpretation of shoulder joint kinetic and kinematic data should also be central to all future, related investigative efforts.
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Crognier, Lionel. "Conditions d'expression et rôle des connaissances tactiques dans l'anticipation de trajectoires de balles au tennis." Paris 5, 2003. http://www.theses.fr/2003PA05S023.
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Cette recherche s'inscrit dans le cadre de l'expertise cognitive et vise à comprendre les déterminants de l'anticipation au tennis. Au cours des vingt dernières années, la question "quel type d'information est extraite pour anticiper l'endroit et le moment du rebond de la balle" a reçu deux réponses pricipales. Il a été montré que des indices visuels précoces étaient prélevés sur le mouvement de l'adversaire et que le vol de la balle pouvait spécifier le temps restant avant le contact entre la balle et la raquette. L'objet de cette thèse est de déterminer si l'habilité d'anticipation peut être attribuée à une troisième source d'information : celle qui est liée au contexte tactique du jeu. Autrement dit, la connaissance des épisodes de jeu antérieurs à la trajectoire de la balle à juger peut-elle améliorer la qualité de la prédiction?. . .
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Fabre, Jean-Bernard. "Effets des facteurs matériels sur le développement de la fatigue neuromusculaire en tennis." Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4057.
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L'étendue et l'étiologie de la fatigue neuromusculaire dépendent des caractéristiques de la tâche. Parmi ces caractéristiques, l'effet des facteurs matériels est peu documenté. Le tennis est un modèle intéressant pour étudier cet effet puisque cette activité se déroule sur différentes surfaces, susceptibles d'influencer le développement de la fatigue. Cette hypothèse reste à vérifier. Par ailleurs, l'évolution des matériaux a rendu les raquettes modernes plus légères, plus rigides que les raquettes en bois. Aussi, afin de garder du contrôle dans le jeu, les joueurs ont adopter des cordages plus rigides, susceptibles de favoriser le développement de la fatigue. Les objectifs de ce travail étaient donc (i), d'évaluer les origines et l'étendue de la fatigue neuromusculaire en fonction de la surface de jeu à la suite d'un match de longue durée, et (ii) de tester l'effet du cordage sur le développement de la fatigue des muscles de l'avant-bras durant un match de tennis simulé. Dans notre première étude, aucune différence significative de fatigue neuromusculaire n'était mesurée lors de matchs disputés sur différentes surfaces. Nos résultats démontrent une baisse limitée de la force des fléchisseurs plantaires à la suite des matchs, majoritairement attribuée à des altérations des capacités contractiles des fléchisseurs plantaires. Le rôle des facteurs centraux étaient moins clair. Dans la seconde étude, nous avons démontré que jouer avec un cordage rigide favorisait le développement de la fatigue sur les muscles de l'avant-bras par rapport à des cordages souples. La baisse de vitesse mesurée au cours du match simulé pourrait être partiellement liée à cette fatigue localiséeThe etiology and amplitude of neuromuscular fatigue depend on the task characteristics. Among these characteristics, the effect of material factors on the development of neuromuscular fatigue has been scarcely documented. Tennis is an interesting model to study this effect since it is played on different surfaces. Playing surfaces may therefore differently influence the development of fatigue on the lower-limb muscles. However, this hypothesis remains to be tested. In addition, the use of composite materials and the progress of engineering have allowed racquet engineers to design tennis racquet frames which are stiffer, lighter, and more powerfull than old wooden racquets. To keep controling the ball, players now use stiffer string that can influence the development of fatigue on the upper-limb muscles. The objectives of this thesis were (i) to evaluate the effect of the playing surface properties on the development of neuromuscular fatigue in tennis and (ii) to test the influence of string stiffness on the occurrence of forearm muscle fatigue during a simulated tennis match. In the first study, no significant difference of neuromuscular fatigue was observed between surfaces. We have reported a moderate reduction of the maximal voluntary force, which was mainly associated with an alteration of the contractile properties of the plantar flexor muscles. The implication of central factors in the voluntary force decrement was less clear. In the second experimentation, we have demonstrated that playing tennis with high-stiffness string promotes forearm muscle fatigue development, which could partly contribute to the groundstroke ball speed decrement during the game
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Bourgninaud, Martin. "Prevalência de sintomatologia e de lesões músculoesqueléticas em tenistas." Bachelor's thesis, [s.n.], 2020. http://hdl.handle.net/10284/9123.
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Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em FisioterapiaObjetivo: Este estudo tem como objetivo estimar a prevalência de sintomas e lesões em tenistas, bem como seu tipo, localização, mecanismo e fatores de risco. Métodos: A amostra foi constituída por 345 atletas de tênis, com idades entre 18 e 76 anos, sendo 212 (61,8%) do sexo masculino. O instrumento de medida foi um questionário referente à caracterização da população e aspectos relacionados à modalidade, sintomas e lesões. Resultados: 332 (96,8%) atletas referiram sintomas nos últimos 12 meses e 201 atletas (58,6%) referiram lesão em um período de 12 meses, totalizando 383 lesões. A taxa lesiva foi de 7,79 lesões por 1.000 horas de prática. As áreas sintomáticas mais comuns foram a coluna lombar. Uma esquerda com duas mãos e o uso preferencial de piso duro aumentam os sintomas no tornozelo/pé e ombro/braço. As lesões mais comuns foram lesões articulares localizadas no tornozelo. O tenista que pratica competição teve maior prevalência de lesões e maior prevalência no cotovelo/antebraço e tornozelo/pé. Lesão eémais aguda no membro superior e gradual no membro inferior ocorreu no treinamento. O uso excessivo foi a principal causa de lesão. Conclusões: Os dados revelaram alta prevalência de lesões e sintomas em atletas de tênis. A estrutura e a região corporal mais afetadas foram, respectivamente, lesões nas articulações e no joelho.
Objective: This study aims to estimate the prevalence of symptoms and injury in tennis players, as well as their type, location, mechanism of injury and risk factors. Methods: The sample was constituted by 345 tennis athletes, aged 18 to 76, being 212 (61.8%) male. The measurement instrument was a questionnaire concerning characterization of the population, tennis practice, the symptoms and injuries. Results: 247 (79,9 %) athletes referred having symptoms in the last 12 months. 201 athletes (58,6%) referred having an injury in a 12-month period, totalizing 283 injuries. There were 7.79 injuries per 1,000 hours of tennis play. The most common symptomatic areas were the lumbar spine. Two-handed backhand stroke and a preferentially use of hard-court increased symptoms in ankle/foot and shoulder/arm. The most common injuries were joint injuries located in the ankle. Tennis player who practice competition had a higher prevalence of injury and higher prevalence in elbow/forearm and ankle/foot. Lesion where more acute in upperlimb and gradual in lower-limb, occurred in training. Excessive use was the main cause of lesion. Conclusions: Data revealed a high prevalence of injuries and symptoms in tennis athletes. The most structure and body region affected was respectively joint injuries and the knee.
N/A
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Teboulle, Dov. "Les traumatismes du tennis : traitement médicamenteux et préventions." Bordeaux 2, 1997. http://www.theses.fr/1997BOR2P085.
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Chiminazzo, João Guilherme Cren. "Sindrome de Burnout no esporte : a visão de tecnicos de tenis de campo." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/274917.
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Orientador: Paulo Cesar MontagnerDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Educação Fisica
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Resumo: A síndrome de burnout, conhecida como síndrome do esgotamento físico, psíquico e emocional, acomete pessoas de diversas áreas profissionais. No esporte, é comum constatar tanto profissionais quanto atletas em esgotamento. A síndrome de burnout é o eixo central desta pesquisa realizada com técnicos de tênis de campo sobre sua percepção com atletas acometidos pela síndrome. Para o presente estudo adotou-se a tradução do termo burnout para esgotamento. O objetivo do estudo foi pesquisar as opiniões dos técnicos de tênis de campo, a respeito da síndrome de burnout em atletas infanto-juvenis e profissionais na referida modalidade. Utilizou-se como método a pesquisa qualitativa, optando pela análise de conteúdo para a categorização dos dados obtidos com os questionários. Para isso, foi elaborado um questionário com onze questões fechadas (caracterização dos sujeitos) e nove questões abertas. Trinta e quatro técnicos foram contatados e apenas dois deles não participaram do estudo. Após o contato prévio com os sujeitos, marcou-se um encontro para aplicação dos questionários. De posse dos questionários, após uma análise qualitativa, pode ser verificado que 81% dos técnicos já tiveram atletas que apresentaram sinais de esgotamento. Um outro dado obtido com as respostas foi que sinais fisiológicos para o esgotamento tiveram 96% das menções dos técnicos. Foram vinte e quatro menções para a categoria Treinos como precursores para a síndrome de burnout no tênis de campo. É importante que técnicos de tênis de campo conheçam o fenômeno da síndrome de burnout para que sejam capazes de orientar seus atletas, garantindo-lhes uma boa qualidade de vida em suas carreiras esportivas
Abstract: The syndrome of burnout, known as syndrome of the physical, psychic and emotional exhaustion, acomete people of diverse professional areas. In the sport, it is common to evidence in such a way professional how much athlete in exhaustion. Burnout syndrome is the central axel from this research conducted with Tennis coaches about their perception over athletes with this syndrome. The adopted translation for burnout within this study was ¿esgotamento¿. The main goal of this study was researching tennis coaches opinions about burnout syndrome in juveniles athletes and professionals within the same sports modality. Qualitative method of research was used, where the option for content analyzes was made for categorizing data obtained from questionnaires. To be used as an instrument it was elaborated a questionnaire made by 11 closed items (individual characterization) and nine open items. There were contacted thirty four (34) coaches, and only two (2) of them did not participate on the study. After the previous contact a meeting was scheduled for answering the questionnaire. It was verified that 81% of the coaches have already had athletes presenting signs of burnout. Another data obtained from the answers was that physiological signs for acknowledging the syndrome had 96% of the times mentioned by the coaches. Twenty four times ¿Practicing¿ was quoted as precursor for Tennis burnout syndrome. Results lead to a conclusion that it is very important for tennis coaches to recognize the burnout syndrome to be always able to guide their athletes
Mestrado
Ciencia do Desporto
Mestre em Educação Física
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Mahn, Paulo Ângelo 1969. "Estudo eletromiografico em alguns musculos do ombro e do musculo biceps do braço (cabeça longa), nos movimentos basicos do tenis de campo." [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/288811.
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Orientador: Fausto BerzinDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba
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Resumo: O propósito deste trabalho foi de realizar um estudo eletromiográfico para comparar a atividade elétrica entre tenistas e não tenistas nos músculos trapézio (porção superior), deltóide (porção anterior), deltóide (porção posterior), bíceps do braço (cabeça longa), peitoral maior (porção esterna1) e grande dorsal nos movimentos básicos do tênis, que são o forehand, backhand e saque. Cada movimento foi dividido em três fases: início, aceleração e término. Vinte voluntários (10 tenistas e 10 não tenistas), com idade entre 20 e 30 anos, destros, foram analisados através de um eletromiógrafo (VIKING TI) de 8 canais utilizando-se de mini- eletrodos de superficie tipo Beckman, onde cada voluntário realizou três vezes o mesmo movimento. A análise dos resultados foi efetuada através de software específico, o SISDIN, que forneceu os dados numéricos em RMS (Raiz Quadrada da Média), expressos em microvolts (p. V). Foi utilizado um metrônomo para indicar com precisão o tempo exato das três fases de cada movimento. O método estatístico utilizado foi a Análise de Variância (ANOVA). Os resultados mostraram que independentemente dos movimentos e das fases os tenistas apresentaram atividade elétrica maior do que os não tenistas nos músculos trapézio (porção superior), deltóide (porção posterior), bíceps do braço (cabeça longa), peitoral maior (porção esternal) e grande dorsal. Não houve diferença estatisticamente significativa entre os tenistas e não tenistas no músculo deltóide (porção anterior). O músculo que apresentou maior atividade elétrica foi o músculo trapézio (porção superior) e o músculo que apresentou menor atividade elétrica foi o músculo grande dorsal. O músculo que apresentou a maior diferença de atividade elétrica entre tenistas e não tenistas foi o músculo peitoral maior (porção esternal). A maior atividade elétrica apresentada pelos tenistas em relação aos não tenistas, é devido à melhor adaptação e maior intensidade aplicada aos movimentos realizados
Abstract: The purpose of this work was to study by electromyography, the electric activity between tennis players and non-tennis players in the trapezius (upper fibers), pectoralis major (sternocostal portion), deltoide (anterior and.posterior portion), biceps branchii (long head) and teres major muscles in the basic movements of tennis which are: the forehand, the backhand and the serve. Each movement was divided in three phases: beginning, acceleration and end. Twenty young volunteers (10 tennis players and 10 non-tennis players), aged 20 to 30 years dextrous, were studied by using a electromyographyc equipment with eight channels. The electromyographyc signals were captured by surface minielectrodes (Beckman Type), where each volunteer has performed the same movement three times. The signals were analysed by a specific software the SISDIN, which supplied the numerical data in RMS (Root Mean Square), expressed in microvolts (J.! V). A was used to indicate the accuracy of the exact time of the three phases of each movement. The statistic method used was the variance analysis (ANOVA). The results revealed that regardless of the movements and the phases, the tennis players have presented greater electric activity than the non-tennis players in the trapezius (upper fibers), pectoralis major (stemocostal portion), deltoide (anterior and posterior portion), bíceps branchii (long head) and teres major muscles. There was no significant statistic difference between the tennis players and non-tennis players in the muscle deltoide (anterior portion). The muscle which has presented the greater difference in the electric activity was the muscle trapezius (upper fibers), and the muscle which has presented the lowest electric activity was the teres major. The muscle which has presented the greater difference in the electric activity between tennis players and non-tennis players was the muscle pectoralis major (stemocostal portion). The greater electric activity presented by tennis players, compared to the non-tennis players is due to the best adaptation and greater intensity applied to the movements
Mestrado
Anatomia
Mestre em Biologia e Patologia Buco-Dental
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Rossi, Jeremy. "Analyse biomécanique de l'interface main-raquette lors de la pratique du tennis : applications à l'étude du tennis elbow." Thesis, Aix-Marseille, 2012. http://www.theses.fr/2012AIXM4074.
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Le tennis elbow est une pathologie fréquente affectant le membre supérieur. Cette pathologie s'observe également dans un large éventail d'activités manuelles allant de la manipulation d'outils de maçonnerie à la manipulation d'une souris d'ordinateur. Malgré son prévalence élevée, les mécanismes sous-jacents au développement du tennis elbow demeurent paradoxalement largement méconnus et n'offrent pas de consensus scientifique. Toutefois, les outils, les instruments ou les objets manipulés, formant une interface avec la main, sont soupçonnés d'être en partie responsables de l'apparition de cette affection. Cependant, le manque de moyens d'investigation biomécanique sur la main ramène cette assertion au statut d'hypothèse. Dans ce travail de thèse, l'idée que les caractéristiques physiques de la raquette (i.e. taille et forme du manche ; inertie de la raquette) puissent avoir une influence sur le risque d'apparition du tennis elbow a été testée. Pour cela, nous avons mené une démarche structurée en trois étapes. Tout d'abord, une approche expérimentale contrôlée nous a permis de quantifier les efforts exercés au niveau de l'interface main-manche lorsque l'on serre simplement ce dernier. Pour cela, un instrument de mesure des forces a été développé (i.e. ergomètre à 6 poutres couplé à une nappe de pression Tekscan). Cela nous a permis de définir une taille et une forme de manche optimale pour les forces de serrage. Dans un second temps, ce manche optimal (i.e. de section circulaire et de périmètre égal à 17,9% de la longueur de la main) a été testé au cours de frappes de tennisLateral epicondylalgia (LE) have been reported to occur at least once in a range of 40% to 50% of tennis players and in a large number of workers using hand tools. Despite high prevalence, the mechanisms underlying the development of tennis elbow are paradoxically misunderstood and suffer from a lack of scientific consensus. The characteristics of the handled tools (e.g. the grip size and the shape) are believed to be partly responsible for the occurrence of these disorders. However, the available material and technique for investigation and the proceedings studies did not gave evidence for this hypothesis. In this work, the idea that the size and shape of a tennis racket handle can affect the risk of developing tennis elbow was tested in three main steps. First, a controlled experimental approach was performed in order to quantify the forces exerted at the interface hand / handle when squeezing simply a handle. A special force ergometer has been developed to measure the forces at the hand/handle interface. This study enabled us to define an optimal size and shape (i.e. circular perimeter equal to 18% of the length of the hand) to perform a maximal squeezing force. In a second step, the optimal handle was tested during tennis strokes. Our results show that with and without fatigue, the grip force was lower for the optimal handle compared to bigger or smaller handle. Finally, in a last step, a biomechanical model of the hand was used to assess the impact of the tennis racket grip size on the forces applied on muscles affected by tennis elbow during a simulation. Our results suggest that the optimal grip size reduces muscle tensions of hand extensor muscle
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Mikešová, Eva. "Analýza tenisového utkání s důrazem na psychické faktory." Master's thesis, 2020. http://www.nusl.cz/ntk/nusl-412126.
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Title: Analysis of the tennis match with emphasis on psychical factors. Objectives: The main goals of this paper is to assess whether mental states can affect the performance of the player during a tennis match. Method: The basic method will be used method of direct observation of players in the game situations with tennis match statistics. Results: Based on the analysis of the match was prepared curve of performance, which made it possible to compare the course of performance for both players. During the observation, external manifestations of behavior were recorded, which were reflected in the further development of the match. Keywords: tennis, tennis psychology, psychical states
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Procházka, Josef. "Strategie a taktika v tenisové dvouhře." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-437820.
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Title: Strategy and tactics in tennis singles Objectives: The primary goal of this study was to inquire, at various levels of the training process, into what elite tennis players require from their coaches in order to maximize the outcomes of the training process. The secondary goal was to supply the perspective of the players with a perspective obtained from experienced tennis coaches. The coaches provided us with their views on what makes the training process effective. Methods: The research design of this study is a version of the multi-case explorative study that gathers data by means of semi-structured interviews. It is a case of qualitative research. The data obtained, in total from 18 respondents (9 players, 9 coaches), were submitted to a deductive form of thematic analysis. Two thematic tables and the related reports are the outcomes. The reports were made with the intention of formulating useful recommendations, whenever possible, and to relate the findings to the content of the theoretical part of the thesis. Results: Our data have underpinned the importance of tactics training. To maximize the effectiveness of the training process, it has been reported, it is necessary to bring the training process in terms of performance, in various aspects (tactics, psychology, physical performance...
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Beránková, Kamila. "Tenis a jeho trénink v tenisových školách." Master's thesis, 2011. http://www.nusl.cz/ntk/nusl-312926.
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Annotation: Title: Tennis and its training in the tennis schools The aim of my diploma work is to map the training process in the tennis schools where the young pupils are being trained and find out if they have the quality conditions for their training nowadays. I tried to determine with the aid of the specialized literature what kind of instruments the pupils have at the disposal. These and other knowledges related to the quality of the environment in the tennis schools I tried to map all over the Czech Republic. By support of the elaborated qustionnaire that I distributed to the coaches of the pupils I colected the information about the way and the quality of the training on the particular schools. In conclusion I interviewed Mrs. Stasa Matejovska the leader of the private tennis school. Detecting the concrete specifics of this school helped me to develop the questionnaire to more detailed information and to summarize my work better. Key words: tennis, tennis coaches, tennis schools
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Čihák, Josef. "Manuál pro výběr tenisového vybavení pro hráče a trenéry." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-388205.
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Title: Guide for selection of tennis equipment for players and coaches Objectives: The main purpose of this thesis is to create a detailed guide for selecting tennis equipment for players and coaches, which will help players choose right racquet, strings, balls, shoes and bags. At the same time, it will inform the reader about equipment for tennis coaches. In addition a questionnare will be elaborated to detect the equipment preferences of players at performance level. Methods: Content analysis of documents was used in this thesis and was completed by a questionnare. Results: Result of this thesis is a guide for selecting tennis equipment for players and a coach, which helps people choose the right racquet and strings. One will also gain better knowledge of tennis ball characteristics in connection with different surfaces and varying game styles. Also results from the questionnare will be elaborated to illustrate the preferences of players at performance level. Keywords: Tennis, guide, tennis racquets, tennis strings, tennis shoes, tennis bags, tennis balls, history of tennis, tennis accessories, equipment, coach.
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Rullová, Michaela. "Tenis na vozíku jako motivace v životě handicapovaného sportovce." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-330110.
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Title: Wheelchair tennis as a motivation in the life of a handicapped athlete Objectives: The aim of this work is to verify the importance of sport, particularly the wheelchair tennis in the life of a disabled sportsman. Methods: The main method of a search used in this thesis was used the method of an explorative research. Specifically, in the form of an anonymous questionnaire and three interviews, which were used to illustrate the examined group of disabled athletes. The main element of the research was a separate research while using the questionnaire, which consisted of 16 questions. The non-standard questionnaire was set up on the basis of mentoring of Mgr. Tomáš Kočíb, consultations with experts in the field of wheelchair tennis Mgr. Rostislav Čichoň, Ph.D., literature research and the author's own, gained experience. Results: It was confirmed that sport, namely wheelchair tennis is significant for a sportsman's life. It does not only affect his/her physical condition but their whole personality. Key words: tennis, wheelchair tennis, handicap, motivation, research
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Skokanová, Aneta. "Hodnocení tenisové techniky a herní úrovně u dorostenek." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-405833.
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Title: The evaluation of tennis technique and game level of female adolescent tennis players Objectives: The aim of this thesis is to evaluate and compare tennis technique of selected strokes and game level of adolescent female tennis players. Methods: For my diploma thesis, I have chosen methods of testing, participant observation and scaling. The research group consisted of four players aged 16-17. I had tested these players using the ITN test, based on which I determined their game level. I used a method of participant observation in order to collect data for the evaluation of selected strokes' technique. Specifically, I observed the players during their training and sessions and made video records of them. Collected data were evaluated based on Likert scale, which contains of six levels. Results: Based on testing, the players were placed in three ITN categories (ITN 5, ITN 6 and ITN 7). The game level of all players is intermediate. According to the ITN test, the strongest part of their game are groundstrokes. On the other hand, the weakest spot of their game are volleys and serve. The players were able to estimate their strengths and weaknesses in almost all cases. In terms of technique, each player has a different stroke as their best one. It does not apply that the player with the best...
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Lai, Yong-Liao, and 賴永僚. "Soft tennis." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/87262855383539225346.
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Bouček, Dominik. "Optimalizace marketingové komunikace tenisového klubu v závislosti na pandemii Covid-19." Master's thesis, 2021. http://www.nusl.cz/ntk/nusl-448413.
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Title: Optimization of tennis club marketing communication depending on the Covid-19 pandemic Objectives: The main objective of this thesis is to make an optimized proposal of marketing communication which can help to Tenis Centrum Dobříš handle their communication with customers during the pandemic rules and during the time with no limitations. Methods: Qualitative research and analyzes of secondary data were used to achieve the main objective of this thesis. Focus group with owners of the club and a few coaches was used as qualitative research. Based on the obtained data, the current state of marketing communications was evaluated, and which led to the creation of optimized communication. Results: The analysis revealed that the Tenis Centrum Dobříš does not use the potential of individual communication tools independently of the Covid-19 pandemic. Optimalization of the communication tools was design for the club especially for online communication tools. It can be used in times of pandemic restrictions but also in times when the club can operate without any restrictions. Keywords: Marketing, communication, tennis, Covid-19
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Přibylová, Martina. "Pohyb po dvorci u elitních hráček tenisu." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324856.
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Title: The comparison of the tennis footwork during the match by the elite female-players. Goals: To describe and analyze tennis footwork from ready position to hit the ball and analyze tennis stance during the match by the elite female-players. Method: In this thesis we collected the data based on observation and videorecording. The data was written sheet of paper down. The obtained data are subjected to final processing using mathematical and mathematical-statistical methods. Results: According to these female-players we have found out that the most footwork to hit the ball is running. During the hit the ball there is no footwork and the most footwork back to ready position is schuffle. The most common tennis stance is open stance. Key words: tennis, tennis footwork, tennis stance
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Mertlík, Jakub. "Rozdíl mobility zápěstí u hráčů závodního a rekreačního tenisu." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324859.
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Title: Difference wrist mobility with players racing and recreational tennis Objective: The aim of this work is to measure and compare the range of motion of the wrist in racing and recreational tennis players and both upper limbs (playing, not playing). To compare the values measured 2D electrogoniometry, by sex and game levels. Method: Research probands were divided into two groups, a total of 20 people. In one group, there were ten boys and ten girls aged 14-17 years who play tennis at competitive level and train four to five times a week for at least 4 years. The second group also consisted of 10 boys and 10 girls in the same age range, but tennis is played on a recreational level once maximum twice a week for at least 4 years. It was important that the criteria for selecting probands had several common denominators. These are gender, age, level of game, whether measured by an individual not had any injury, regeneration is not and should not do other activities besides tennis. Wrist probands were tested using an electric goniometer. Were measured in the frontal plane (radial and ulnar reduction) and sagittal plane (dorsal and palmar flexion). These data were measured by sitting electrogoniometry and subsequently were compared and statistically analyzed. Results: Measurements confirmed...