scholarly journals Influence of hard, artificial grass and clay court surfaces on wheelchair tennis players' mobility-a case study

2021 ◽  
Author(s):  
Alejandro Sánchez-Pay ◽  
David Sanz-Rivas
Keyword(s):  
Tennis Players ◽  
Artificial Grass

Injury rates in recreational tennis players do not differ between different playing surfaces

2017 ◽  
Vol 52 (9) ◽  
pp. 611-615 ◽  
Author(s):  
Babette M Pluim ◽  
Benjamin Clarsen ◽  
Evert Verhagen
Keyword(s):  
Cross Sectional Study ◽  
Research Centre ◽  
Overuse Injuries ◽  
Cross Sectional ◽  
Injury Rates ◽  
Tennis Players ◽  
Trauma Research ◽  
Natural Grass ◽  
Significant Difference ◽  
Artificial Grass

ObjectiveThe aim of this study was to determine whether there is a difference in the prevalence of tennis injuries between the four most common court surfaces in the Netherlands, including hard court, clay, sand-fill artificial grass and red-sand-fill artificial grass. Natural grass was not included in this study.MethodsThis was a repeated cross-sectional study over 6 months, involving members of the Royal Netherlands Lawn Tennis Association (KNLTB). A monthly questionnaire was sent to a random sample of 20 000 KNLTB members, stratified by their club’s playing surface. The questionnaire included questions on court surface, tennis exposure and physical complaints, using the Oslo Sports Trauma Research Centre questionnaire on health problems.ResultsA total of 3656 (18%) of the 20 000 invited members completed at least one of the monthly questionnaires [mean age 49 years (15)]. A total of 4047 injuries were reported by 1957 respondents. Of these injuries, 3246 (80%) were overuse and 801 (20%) were acute. There were no statistically significant differences in injury prevalence between groups who played primarily on any one of the four court surfaces. However, players who played on multiple surfaces had a higher injury prevalence, particularly of overuse injuries, than those who primarily played on one court surface. Compared with the other court surfaces, there was a higher prevalence of lower limb overuse injuries when playing on hard court.ConclusionThere is no significant difference in the overall prevalence of injury on clay, hard court, sand-fill artificial grass and red-sand-fill artificial grass.

scholarly journals Building foundations for the future: A case study with LTA Youth

2021 ◽  
Vol 29 (85) ◽  
pp. 46-49
Author(s):  
Sam Richardson ◽  
Matt Smith ◽  
Merlin Van de Braam
Keyword(s):  
Young Child ◽  
Learning Strategies ◽  
Early Years ◽  
Physical Literacy ◽  
Tennis Players ◽  
The Future ◽  
Low Levels

This article discusses modern challenges experienced when developing tennis players including low levels of physical literacy. It then outlines the needs of a young child and learning strategies that can be used. A brief overview of some practical strategies for engaging early years participants, using a player-centred approach, are shared using examples from LTA Youth with explanations of how each exercise integrates key principles to attract and retain early years participants. 

scholarly journals An Accurate and Rapid System to Identify Play Patterns in Tennis Using Video Recording Material: Break Point Situations as a Case Study

2018 ◽  
Vol 62 (1) ◽  
pp. 199-212 ◽  
Author(s):  
Iván Prieto-Lage ◽  
M.A. Prieto ◽  
Thomas P. Curran ◽  
Alfonso Gutiérrez-Santiago
Keyword(s):  
Rapid Detection ◽  
Pattern Analysis ◽  
Detection System ◽  
Video Recording ◽  
Break Point ◽  
Tennis Players ◽  
Recording Material ◽  
Break Points ◽  
First Time

AbstractThe goal of this study was to present an accurate and rapid detection system to identify patterns in tennis, based on t-pattern analysis. As a case study, the break point situations in the final matches of the clay court tournaments played during the seasons 2011 and 2012 between the tennis players Novak Djokovic and Rafael Nadal were chosen. The results show that Nadal achieves a higher conversion rate with respect to Djokovic in the break point situations, independent of the outcome of the match. Some repetitive patterns of both players were revealed in break point circumstances. In long rally sequences (higher than seven hits), the Spanish player won more break points, both serving and receiving, as a result of unforced errors of his opponent’s backhand. In medium rally sequences (between four and seven hits), other factors such as the type, direction or serve location have shown to play an important role in the outcome of the point. The study also reveals that Djokovic frequently commits double faults in these critical situations of the match. This is the first time that t-patterns have been used to analyze the sport of tennis. The technique is based on computer vision algorithms and video recording material to detect particular relationships between events and helps to discover the hidden mechanistic sequences of tennis players.

scholarly journals Investigating Coaching Behaviors During the COVID-19 Pandemic: A Case Study Within a Case Study

2020 ◽  
Vol 4 (1) ◽  
pp. 125-133
Author(s):  
Jonathan Glen ◽  
Julie Gordon ◽  
David Lavallee
Keyword(s):  
Research Process ◽  
Direct Result ◽  
Online Delivery ◽  
Tennis Players ◽  
Coaching Behaviors ◽  
Group Data ◽  
Focus Group Data ◽  
Sport And Exercise ◽  
Sports Coaching

The purpose of this case study is to offer reflections for both applied researchers and practitioners on our experiences of investigating coaching behaviors during the COVID-19 pandemic. The case is based on the delivery of remote, online tennis coaching sessions to children over a period of 3 weeks. Questionnaire, observation, and focus group data were collected from tennis players, coaches, and parents/guardians. Analyses revealed similarities and differences with previous investigations measuring coaching behaviors, as well as the perceived effectiveness of sports coaching in an online environment. Novel insights and recommendations for applied researchers and practitioners in sport and exercise psychology are highlighted, including the importance of staying connected during the pandemic, keeping players and parents motivated, and creativity. The authors consider the context of conducting a case study into coaching behaviors during the COVID-19 pandemic itself, and conclude by providing reflections on our case study within the case study of COVID-19. These include enhanced communication (as it was easier to connect with each other), the nature of the online delivery improving presession preparation, and the research process being relatively more straightforward to implement, all due to barriers being removed as a direct result of COVID-19 quarantine, stay-at-home restrictions.

scholarly journals Case Study Regarding the Role of Physical Therapy in the Recovery of Column Deficit in Junior Tennis Players

GYMNASIUM ◽  
2017 ◽  
Vol XVIII (1) ◽  
Author(s):  
Raluca - Mihaela Hodorcă ◽  
Ionuț Onose ◽  
Alexandru Ghițescu ◽  
Adriana Albu ◽  
Paul Lucaci
Keyword(s):  
Physical Therapy ◽  
Muscle Tone ◽  
Tennis Player ◽  
Therapeutic Exercise ◽  
Tennis Players ◽  
Initial Testing ◽  
A Value ◽  
Junior Tennis

Tennis has become increasingly popular in recent years but the coaches, focuses on the technique and tactic in the game and less on the issues they involve playing tennis, namely unilateral increase muscle tone which leads to the appearance of scoliotic attitudes. Hypothesis: using specific means of selected, we will improve posture junior tennis players with scoliotic attitude of the spine. Material and method: the study was conducted on a junior tennis player, age11, which participated in the sessions of physical therapy with a frequency of 2-3 times per week. Results and discussion: the patient E.S. was diagnosed with "C" shaped scoliosis. Using the scoliometer we obtained from initial testing a value of 7° and the final value of only 4°. Conclusions: as a result of tests conducted confirmed the hypothesis that it was gone and that therapeutic exercise is imperative necessary to tennis players.

scholarly journals A Case Study of Junior Elite Tennis Players' and their Parent’s Self-Talk

2019 ◽  
Author(s):  
Véronique Boudreault ◽  
Christiane Trottier ◽  
Martin Provencher
Keyword(s):  
Elite Athletes ◽  
Emotional Experience ◽  
Self Regulation ◽  
Well Being ◽  
Valuable Insight ◽  
Tennis Players ◽  
Self Talk ◽  
Junior Tennis ◽  
And Performance

Automatic self-talk of elite athletes provides valuable insight into their emotional experience and self-regulation strategies in competition. To date, there is a shortage of research examining elite junior athletes’ automatic self-talk in competition through a qualitative lens. Despite parents’ key role in the well-being and performance of their child, there is no study about junior elite athletes’ and their parents’ self-talk during a competition. Hence, the aim of this study is to examine the content of elite junior tennis players’ automatic self-talk as well as the content of their parents’ self-talk regarding their emotions during important matches. In each of the two cases under investigation, individual in-depth interviews were conducted with a tennis player and his or her most dedicated parent. The results were analyzed using Yin’s (2014) multiple-case study strategy and Polkinghorne’s (1995) narration inquiry strategy. An analysis of automatic self-talk content was conducted individually for each case, followed by an intra-case and cross-case analysis. The results reveal that each player’s and parent’s automatic self-talk is related to their own subjective emotional experience during the matches. The findings highlight similarities in athletes’ and parents’ self-talk patterns, reflecting the potential influence of parents in athletes’ performance pressure and their goal-directed self-talk strategies. The differences observed between the self-talk of players and their parents demonstrate the relevance of examining their profiles to better understand the origin of individual differences in self-talk.

The Genesis and Internal Dynamics of El Salvador's People's Revolutionary Army, 1970–1976

2014 ◽  
Vol 38 (01) ◽  
pp. 102-129
Author(s):  
ALBERTO MARTÍN ÁLVAREZ ◽  
EUDALD CORTINA ORERO
Keyword(s):  
Latin America ◽  
El Salvador ◽  
Early Years ◽  
Left Wing ◽  
Internal Dynamics ◽  
Internal Coherence ◽  
The 1960S

AbstractUsing interviews with former militants and previously unpublished documents, this article traces the genesis and internal dynamics of the Ejército Revolucionario del Pueblo (People's Revolutionary Army, ERP) in El Salvador during the early years of its existence (1970–6). This period was marked by the inability of the ERP to maintain internal coherence or any consensus on revolutionary strategy, which led to a series of splits and internal fights over control of the organisation. The evidence marshalled in this case study sheds new light on the origins of the armed Salvadorean Left and thus contributes to a wider understanding of the processes of formation and internal dynamics of armed left-wing groups that emerged from the 1960s onwards in Latin America.

Culture and the plasticity of perception

2020 ◽  
Vol 43 ◽  
Author(s):  
Michael Lifshitz ◽  
T. M. Luhrmann
Keyword(s):  
Cultural Context ◽  
Sensory Experience ◽  
Cultural Learning ◽  
The World

Abstract Culture shapes our basic sensory experience of the world. This is particularly striking in the study of religion and psychosis, where we and others have shown that cultural context determines both the structure and content of hallucination-like events. The cultural shaping of hallucinations may provide a rich case-study for linking cultural learning with emerging prediction-based models of perception.

Dual systems for all: Higher-order, role-based relational reasoning as a uniquely derived feature of human cognition

2019 ◽  
Vol 42 ◽  
Author(s):  
Daniel J. Povinelli ◽  
Gabrielle C. Glorioso ◽  
Shannon L. Kuznar ◽  
Mateja Pavlic
Keyword(s):  
Temporal Reasoning ◽  
Higher Order ◽  
Important Case ◽  
Human Cognition ◽  
Relational Reasoning ◽  
Dual Systems ◽  
First Order ◽  
Reasoning System ◽  
Role Based

Abstract Hoerl and McCormack demonstrate that although animals possess a sophisticated temporal updating system, there is no evidence that they also possess a temporal reasoning system. This important case study is directly related to the broader claim that although animals are manifestly capable of first-order (perceptually-based) relational reasoning, they lack the capacity for higher-order, role-based relational reasoning. We argue this distinction applies to all domains of cognition.

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