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Tubez François - One of the best experts on this subject based on the ideXlab platform.
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Contribution à l’évaluation biomécanique du service au tennis. Une analyse de la « trophy position »
Université de Liège Liège Belgique, 2018Co-Authors: Tubez FrançoisAbstract:audience: researcher, professional, student, popularizationLe service occupe une place importante dans le jeu du joueur de tennis moderne. Il constitue une véritable arme pour prendre l’ascendant dans un match. Un grand nombre d’intervenants peuvent contribuer au développement de ce coup chez un joueur depuis les premiers apprentissages jusqu’à la pleine maturité physique et technique : coach, médecin, kinésithérapeute, préparateur physique, biomécanicien, psychologue, etc. La première partie de cette thèse contribue à la mise en place d’un protocole d’évaluation du service au tennis. Nous avons déterminé les outils utilisés dans la littérature pour évaluer ce geste en décrivant leurs avantages et leurs inconvénients. Cette revue de la littérature met en lumière la diversité des outils employés par les chercheurs dans ce domaine d’étude. Les outils actuels les plus appropriés pour l’étude biomécanique du service sont les outils d’analyse 3D avec marqueurs (évaluation de la cinématique) et les plateformes de force (évaluation de la cinétique). Le radar est, lui, intéressant pour quantifier la vitesse de balle. Nous avons également analysé les procédures d’évaluation (protocoles) de ce geste. Sur base de cette revue, nous avons proposé un protocole adapté aux outils et au contexte à notre disposition au sein du Laboratoire d’Analyse du Mouvement Humain de l’Université de Liège. Nous avons reconstitué partiellement un terrain de tennis au sein du laboratoire. Les paramètres de la cinématique du service au tennis ont été évalués à l’aide d’un système d’analyse 3D. La cinétique de poussée des jambes a été mesurée à l’aide de plateformes de force. La performance finale a été déterminée par la vitesse de la raquette à l’impact ainsi que par un système personnel d’évaluation de la précision du service. Cette première partie donne des informations essentielles aux entraineurs et aux chercheurs qui s’intéressent à l’évaluation spécifique de ce geste pour faire évoluer leur(s) joueur(s) vers le plus haut niveau.Certaines conditions expérimentales ont ensuite été vérifiées. Ainsi, le protocole de test proposé s’avère reproductible. Par ailleurs, la présence de marqueurs et le contexte du laboratoire ne semble pas modifier significativement la gestuel des joueurs et ne représentent donc pas un écueil à la performance. Malgré le grand nombre de protocoles mis en place dans la littérature, à notre connaissance, nous sommes les premiers à avoir validé notre démarche expérimentale. Notre procédure pourrait servir de référence à la mise en place de l’évaluation du service au tennis. Dans la deuxième partie de cette thèse, nous avons utilisé le protocole validé afin d’étudier la gestuelle du joueur et le lien qui peut être réalisé avec la performance ou encore la pathologie. Nous avons ainsi analysé la séquence cinématique, la « trophy position » et le cas spécifique d’un joueur avec antécédents pathologiques.Un intérêt a été porté au rôle de la séquence proximo-distale sur la performance du joueur. Pour y parvenir, nous avons comparé plusieurs catégories de joueurs et observé une séquence différente en fonction de l’âge et du niveau de jeu. En effet, des joueurs adultes internationaux déclenchent la séquence des actions plus tardivement que des jeunes joueurs nationaux, ce qui permettrait de limiter le temps de transmission de l’énergie depuis le bassin jusqu’aux épaules. L’intérêt d’un délai plus court est certainement lié à une meilleure organisation des pré-stretchs musculaires au sein de la chaine cinématique, ce qui peut expliquer que ces joueurs adultes internationaux soient plus performants. Ensuite, la « trophy position » a été étudiée de manière spécifique au sein de cette séquence d’actions. La maitrise de cette « trophy position » semble essentielle pour réaliser un service performant. Des différences pour cette position sont observées au cours du développement du joueur élite. Les adultes ont, entre autres, une plus grande flexion des genoux et des rotations du bassin et du tronc plus marquées que des enfants lors de la « trophy position ». Les résultats montrent également une séquence du service modifiée entre les enfants et les adultes, confirmant ce que la littérature évoque. Les enfants semblent difficilement coordonner les rotations du tronc avec la flexion des genoux, ou encore le déclenchement de la poussée des jambes avec la phase de propulsion de la raquette et la phase de balancement vers l'avant de la raquette. Les caractéristiques observées chez les adultes peuvent expliquer la meilleure performance de ce groupe.Pour terminer cette deuxième partie, le cas spécifique d’un joueur professionnel avec un antécédent de lésion abdominale a été analysé. L’intérêt de cette étude est d’apporter une grande précision dans l’observation et la compréhension du geste du joueur. Pour y parvenir, nous avons recoupé les résultats obtenus par différentes évaluations sur ce joueur. Nous avons émis des hypothèses quant à l’origine de sa lésion en mettant en évidence une cinématique inadaptée au départ de la « trophy position ». En effet, le relais d’appuis des pieds au départ de la poussée des jambes a pu engendrer une cinématique de bascule antérieure du bassin inappropriée et des tensions abdominales excessives chez le joueur étudié. Cette thèse contribue donc à l’évaluation et à la compréhension de la gestuelle du service au tennis. Elle apporte, à l’entraineur ou encore à l’entourage médical du joueur, des informations pratiques en lien avec cette gestuelle. Ces informations ont pour but d’améliorer la performance et d’éviter la survenue de la pathologie. Nos observations démontrent le réel intérêt de la participation du biomécanicien dans un encadrement pluridisciplinaire du joueur.The serve play an important role in high level tennis game. A well-mastered serve is a substantial advantage for the players. Numerous actors can contribute to the player's serve development from the first steps of learning to the full physical and technical maturity : coach, doctor, physiotherapist, physical trainer, Biomechanist, psychologist, etc. The first part of this thesis contributes to the establishment of a tennis serve evaluation protocol. To evaluate this movement in terms of biomechanics, it is important to use appropriate tools. We have identified those used in the literature to evaluate this movement and described their advantages and disadvantages. This review of the literature highlights the diversity of tools and protocols used by researchers in this field of study. Currently, the most relevant ones used for the biomechanical study of the serve are 3D analysis tools with markers (kinematics) and force platforms (kinetics). The radar is also useful in quantifying ball speed. Next, we analyzed the evaluation procedures (protocols) of this gesture and we proposed a personal protocol adapted to our tools and context within the Laboratory of Human Movement Analysis of the University of Liège. We partially recreated a tennis court in our laboratory. The parameters of the tennis serve kinematics were evaluated using a 3D analysis system. The kinetics of leg drive were measured using force platforms. Final performance was determined by the speed of the racket at impact as well as a personal system for assessing the accuracy of the serve. This first part gives essential information to the coaches and the researchers, who are interested in the specific evaluation of this gesture to bring their player(s) towards the highest level. Thereafter, some experimental conditions have been verified. We evidenced that the test protocol described and used in our laboratory is reproducible. The number of markers and the laboratory environment do not create an obstacle for the realization of the performance. Despite the variety of tennis serve protocols in the literature, it seems that we are the only ones to have validated our test procedure. Our process could serve as a reference for the implementation of the tennis serve evaluation. In the second part of this thesis, we used the validated protocol to study the gestures of the player and the link with the performance or the pathology. We thereby studied the kinematic sequence, the "trophy position" and the specific case of a player with a pathological history.We have looked into the role of the proximal-distal sequence on the players’ performance. To achieve this goal, we compared several categories of players and observed a different sequence according to the age and the game level. Indeed, international adult players trigger the sequence of actions later than young national players. This would limit the time transmission of energy from the pelvis to the shoulders. The interest of a shorter period is certainly linked to a better organization of muscle prestretching within the kinematic chain and could explain a higher level of these international adult players. Later, the "trophy position" was specifically studied within this sequence. Mastering this "trophy position" seems essential to achieve a high performance serve. Differences for this position were observed during the development of the elite player. Adults have, amongst other things, greater knee flexion and more pronounced pelvis and trunk rotations in the "trophy position" than children. The results also showed a modified serve sequence between children and adults, confirming what the literature sets forth. Children seem to have difficulty coordinating trunk rotations with knee flexion or triggering leg thrust with the propulsion phase of the racket and the forward swinging phase of the racket. The characteristics observed in adults may explain the better performance in this group. To finish this second part, the specific case of a professional player with a history of abdominal injury was analyzed. The purpose of this study was to bring a great precision in the observation and the understanding of the stroke. To achieve this, we cross-checked the results obtained by different evaluations. We hypothesized the origin of his injury, highlighting inaccurate kinematics at the start of the "trophy position". Indeed, the back foot relay at the start of the leg drive may have generated an inaccurate anterior pelvic tilt and excessive abdominal tensions. This thesis contributes to the evaluation and comprehension of the tennis serve. It provides to the coach or the medical entourage of the player practical information related to this movement. These data are intended to improve performance and prevent the occurrence of the pathology. Our observations demonstrate the real interest of the participation of a Biomechanist in the multidisciplinary support of the player
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Contribution à l’évaluation biomécanique du service au tennis. Une analyse de la « trophy position »
Université de Liège Liège Belgique, 2018Co-Authors: Tubez FrançoisAbstract:Le service occupe une place importante dans le jeu du joueur de tennis moderne. Il constitue une véritable arme pour prendre l’ascendant dans un match. Un grand nombre d’intervenants peuvent contribuer au développement de ce coup chez un joueur depuis les premiers apprentissages jusqu’à la pleine maturité physique et technique : coach, médecin, kinésithérapeute, préparateur physique, biomécanicien, psychologue, etc. La première partie de cette thèse contribue à la mise en place d’un protocole d’évaluation du service au tennis. Nous avons déterminé les outils utilisés dans la littérature pour évaluer ce geste en décrivant leurs avantages et leurs inconvénients. Cette revue de la littérature met en lumière la diversité des outils employés par les chercheurs dans ce domaine d’étude. Les outils actuels les plus appropriés pour l’étude biomécanique du service sont les outils d’analyse 3D avec marqueurs (évaluation de la cinématique) et les plateformes de force (évaluation de la cinétique). Le radar est, lui, intéressant pour quantifier la vitesse de balle. Nous avons également analysé les procédures d’évaluation (protocoles) de ce geste. Sur base de cette revue, nous avons proposé un protocole adapté aux outils et au contexte à notre disposition au sein du Laboratoire d’Analyse du Mouvement Humain de l’Université de Liège. Nous avons reconstitué partiellement un terrain de tennis au sein du laboratoire. Les paramètres de la cinématique du service au tennis ont été évalués à l’aide d’un système d’analyse 3D. La cinétique de poussée des jambes a été mesurée à l’aide de plateformes de force. La performance finale a été déterminée par la vitesse de la raquette à l’impact ainsi que par un système personnel d’évaluation de la précision du service. Cette première partie donne des informations essentielles aux entraineurs et aux chercheurs qui s’intéressent à l’évaluation spécifique de ce geste pour faire évoluer leur(s) joueur(s) vers le plus haut niveau.Certaines conditions expérimentales ont ensuite été vérifiées. Ainsi, le protocole de test proposé s’avère reproductible. Par ailleurs, la présence de marqueurs et le contexte du laboratoire ne semble pas modifier significativement la gestuel des joueurs et ne représentent donc pas un écueil à la performance. Malgré le grand nombre de protocoles mis en place dans la littérature, à notre connaissance, nous sommes les premiers à avoir validé notre démarche expérimentale. Notre procédure pourrait servir de référence à la mise en place de l’évaluation du service au tennis. Dans la deuxième partie de cette thèse, nous avons utilisé le protocole validé afin d’étudier la gestuelle du joueur et le lien qui peut être réalisé avec la performance ou encore la pathologie. Nous avons ainsi analysé la séquence cinématique, la « trophy position » et le cas spécifique d’un joueur avec antécédents pathologiques.Un intérêt a été porté au rôle de la séquence proximo-distale sur la performance du joueur. Pour y parvenir, nous avons comparé plusieurs catégories de joueurs et observé une séquence différente en fonction de l’âge et du niveau de jeu. En effet, des joueurs adultes internationaux déclenchent la séquence des actions plus tardivement que des jeunes joueurs nationaux, ce qui permettrait de limiter le temps de transmission de l’énergie depuis le bassin jusqu’aux épaules. L’intérêt d’un délai plus court est certainement lié à une meilleure organisation des pré-stretchs musculaires au sein de la chaine cinématique, ce qui peut expliquer que ces joueurs adultes internationaux soient plus performants. Ensuite, la « trophy position » a été étudiée de manière spécifique au sein de cette séquence d’actions. La maitrise de cette « trophy position » semble essentielle pour réaliser un service performant. Des différences pour cette position sont observées au cours du développement du joueur élite. Les adultes ont, entre autres, une plus grande flexion des genoux et des rotations du bassin et du tronc plus marquées que des enfants lors de la « trophy position ». Les résultats montrent également une séquence du service modifiée entre les enfants et les adultes, confirmant ce que la littérature évoque. Les enfants semblent difficilement coordonner les rotations du tronc avec la flexion des genoux, ou encore le déclenchement de la poussée des jambes avec la phase de propulsion de la raquette et la phase de balancement vers l'avant de la raquette. Les caractéristiques observées chez les adultes peuvent expliquer la meilleure performance de ce groupe.Pour terminer cette deuxième partie, le cas spécifique d’un joueur professionnel avec un antécédent de lésion abdominale a été analysé. L’intérêt de cette étude est d’apporter une grande précision dans l’observation et la compréhension du geste du joueur. Pour y parvenir, nous avons recoupé les résultats obtenus par différentes évaluations sur ce joueur. Nous avons émis des hypothèses quant à l’origine de sa lésion en mettant en évidence une cinématique inadaptée au départ de la « trophy position ». En effet, le relais d’appuis des pieds au départ de la poussée des jambes a pu engendrer une cinématique de bascule antérieure du bassin inappropriée et des tensions abdominales excessives chez le joueur étudié. Cette thèse contribue donc à l’évaluation et à la compréhension de la gestuelle du service au tennis. Elle apporte, à l’entraineur ou encore à l’entourage médical du joueur, des informations pratiques en lien avec cette gestuelle. Ces informations ont pour but d’améliorer la performance et d’éviter la survenue de la pathologie. Nos observations démontrent le réel intérêt de la participation du biomécanicien dans un encadrement pluridisciplinaire du joueur.The serve play an important role in high level tennis game. A well-mastered serve is a substantial advantage for the players. Numerous actors can contribute to the player's serve development from the first steps of learning to the full physical and technical maturity : coach, doctor, physiotherapist, physical trainer, Biomechanist, psychologist, etc. The first part of this thesis contributes to the establishment of a tennis serve evaluation protocol. To evaluate this movement in terms of biomechanics, it is important to use appropriate tools. We have identified those used in the literature to evaluate this movement and described their advantages and disadvantages. This review of the literature highlights the diversity of tools and protocols used by researchers in this field of study. Currently, the most relevant ones used for the biomechanical study of the serve are 3D analysis tools with markers (kinematics) and force platforms (kinetics). The radar is also useful in quantifying ball speed. Next, we analyzed the evaluation procedures (protocols) of this gesture and we proposed a personal protocol adapted to our tools and context within the Laboratory of Human Movement Analysis of the University of Liège. We partially recreated a tennis court in our laboratory. The parameters of the tennis serve kinematics were evaluated using a 3D analysis system. The kinetics of leg drive were measured using force platforms. Final performance was determined by the speed of the racket at impact as well as a personal system for assessing the accuracy of the serve. This first part gives essential information to the coaches and the researchers, who are interested in the specific evaluation of this gesture to bring their player(s) towards the highest level. Thereafter, some experimental conditions have been verified. We evidenced that the test protocol described and used in our laboratory is reproducible. The number of markers and the laboratory environment do not create an obstacle for the realization of the performance. Despite the variety of tennis serve protocols in the literature, it seems that we are the only ones to have validated our test procedure. Our process could serve as a reference for the implementation of the tennis serve evaluation. In the second part of this thesis, we used the validated protocol to study the gestures of the player and the link with the performance or the pathology. We thereby studied the kinematic sequence, the "trophy position" and the specific case of a player with a pathological history.We have looked into the role of the proximal-distal sequence on the players’ performance. To achieve this goal, we compared several categories of players and observed a different sequence according to the age and the game level. Indeed, international adult players trigger the sequence of actions later than young national players. This would limit the time transmission of energy from the pelvis to the shoulders. The interest of a shorter period is certainly linked to a better organization of muscle prestretching within the kinematic chain and could explain a higher level of these international adult players. Later, the "trophy position" was specifically studied within this sequence. Mastering this "trophy position" seems essential to achieve a high performance serve. Differences for this position were observed during the development of the elite player. Adults have, amongst other things, greater knee flexion and more pronounced pelvis and trunk rotations in the "trophy position" than children. The results also showed a modified serve sequence between children and adults, confirming what the literature sets forth. Children seem to have difficulty coordinating trunk rotations with knee flexion or triggering leg thrust with the propulsion phase of the racket and the forward swinging phase of the racket. The characteristics observed in adults may explain the better performance in this group. To finish this second part, the specific case of a professional player with a history of abdominal injury was analyzed. The purpose of this study was to bring a great precision in the observation and the understanding of the stroke. To achieve this, we cross-checked the results obtained by different evaluations. We hypothesized the origin of his injury, highlighting inaccurate kinematics at the start of the "trophy position". Indeed, the back foot relay at the start of the leg drive may have generated an inaccurate anterior pelvic tilt and excessive abdominal tensions. This thesis contributes to the evaluation and comprehension of the tennis serve. It provides to the coach or the medical entourage of the player practical information related to this movement. These data are intended to improve performance and prevent the occurrence of the pathology. Our observations demonstrate the real interest of the participation of a Biomechanist in the multidisciplinary support of the player
Hume Patria - One of the best experts on this subject based on the ideXlab platform.
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ISBS 2018 AUCKLAND CONFERENCE SPORTS TECHNOLOGY SHOWCASE PROGRAMME
NMU Commons, 2018Co-Authors: Hume Patria, Neville Jono, Diewald Shelley, Tinwala Farhan, Lefty Steve, Sarmast Farshid, Jones Parn, Helms Eric, Huang Wilson, Lin XiaoyouAbstract:The coordinators Amber Taylor (AUT Ventures), Rosanne Ellis (AUT Research and Innovation Office), and Ryan Archibald (ATEED) have selected companies with new products to be explored by Biomechanists. We hope you gain ideas for your research and learn how to commercialise your products at this showcase. ISBS 2018 Auckland Conference Industry Partner Tekscan are supporting the lunch during the showcase. Dr Jono Neville, Shelley Diewald, and Farhan Tinwala will be showcasing AUT Strain Gauge. AUT Strain gauge allows for a valid and reliable assessment of the strength of an entire class or team in a relatively short amount of time. Steve Leftly and Farshid Sarmast will be showcasing Myovolt which is a breakthrough muscle massage system that you wear. It delivers vibration therapy to any part of the body, it\u27s easy to use, lightweight and has benefits backed by clinical research. Parn Jones, Eric Helms and Wilson Huang will be showcasing Avice which is a wearable device that gives you real-time actionable feedback during weight training. It measures changes in muscle performance to inform you how close to muscular failure you are. Xiaoyou Lin and Bandt Li are showcasing Pressure Mat which is a new resistive-sensing contact mat for detecting the pseudo force, of sports activities such as running, jumping, stepping. Holly Sutich and Bradley Phagan will be showcasing Beta-Energy which is a healthier natural energy drink. It provides sustainable energy so you don’t get the crash that you do from a normal energy drink. Arien Hielkema and Yasir Al-Hilali will showcase MyBio Motion which is a smart wearable knee sleeve. It provides support for rehabilitation from post-operative or knee trauma, and prevention from a knee injury. Daniel Thomson and Emily Coates will showcase Circuband which has successfully paired Virtual Reality with Resistance Training to make fitness more engaging and stimulating for both athletes and the public. Colin Anderson will demonstrate Physio Wear
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ISBS 2018 AUCKLAND CONFERENCE VIP APPRECIATION EVENING PROGRAMME
NMU Commons, 2018Co-Authors: Hume Patria, Mcnair Peter, Alderson Jacqueline, Sheerin KellyAbstract:The VIP event is to acknowledge the work of the industry partners for their active engagement in the conference, and for being willing to take on a new format. The event will also acknowledge two special guests (yes it is a surprise!), and the reviewers for the ISBS 2018 Conference papers, the invited speakers and the ISBS Fellows, ISBS Life members and ISBS Board members. Professor Peter McNair will be the master of ceremonies. Peter is an internationally respected Biomechanist for his work in musculoskeletal biomechanics, injury rehabilitation and sports biomechanics. Peter was the inaugural Director of the AUT Health and Rehabilitation Research Institute and is an active researcher and educator at AUT. Certificates of thanks will be awarded to ISBS 2018 Auckland Conference Industry Partners by Kelly Sheerin. Certificates of thanks awarded to ISBS 2018 Auckland Conference scientific committee members by Peter McNair. There will be a special International Society of Biomechanics in Sports 2018 Conference Honour citation and certificate awarded for contribution to biomechanics theory and practice. Guess who is having a birthday on the night
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WIZE WIZARDS WORDS OF WIZDOM
NMU Commons, 2018Co-Authors: Hume Patria, Alderson Jacqueline, Elliott Bruce, Hamill Joseph, Herzog Walter, Terauds Juris, Irwin GarethAbstract:In keeping with our Kiwiana theme, we will have a Wise Wizards Panel (yes, think Lord of the Rings movie) to answer interactive questioning from the delegates. Panel members are prestigious previous Geoffrey Dyson awardees, Life members, and ISBS Fellows: Professors Patria Hume, Bruce Elliott, Joe Hamill, Walter Herzog and Juris Terauds. Professor Walter Herzog is a Professor at the University of Calgary. Professor Joe Hamill is currently President of the International Society of Biomechanics. Professor Patria Hume was the inaugural SPRINZ Director at the Auckland University of Technology. Professor Juris Terauds and Professor Bruce Elliott are both Emeritus Professors. Professor Bruce Elliott’s philosophy has always been “a good question leads to beneficial research”. Come prepared to ask these wise Biomechanists all the things you have ever wanted to know about biomechanics, as a discipline and a career. Via the session chairs Associate Professor Jacqueline Alderson and Professor Gareth Irwin, and using a dedicated feed arranged by our ISBS Social Media Coordinator Kylie Robinson, you will be able to ask questions like; What does it take to have a successful academic career as a Biomechanist? Where are some of the best experiences that can be gained in applied biomechanics? What is your crystal ball prediction of what biomechanics specialists will focus on in 10 years time? We hope that delegates, especially student and early career researchers, take up this unique opportunity to gather insight from those in whose footsteps they walk
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ISBS 2018 AUCKLAND CONFERENCE SPRINZ-HPSNZ-AUT MILLENNIUM APPLIED PROGRAMME
NMU Commons, 2018Co-Authors: Hume Patria, Dowson Martin, Stanley Mike, Wilson Barry, Briscoe Simon, Carman Allan, Cosser Jodie, Evans Justin, Millar Sarah-kate, Schofield MichaelAbstract:An interactive afternoon of sessions delivered by High Performance Sport New Zealand (HPSNZ) and AUT SPRINZ Biomechanists, Performance Analysts and other biomechanics relevant sport facing practitioners. The 11 sessions are at AUT Millennium (AUTM), which is a satellite site of AUT University and the Auckland training hub for many HPSNZ supported sports such as athletics, sailing, and swimming. These sports and others (cycling, rowing, snow sports etc.) will be represented in the line-up. The applied sessions involve practical demonstrations of aspects of analysis and/or tools used to deliver in the field to directly positively impact athletes performances on the world stage. Following these engaging sessions there will be tasting of New Zealand wine, allowing for further discussion and networking. Sir Graeme Avery will be acknowledged for his contribution to sport science. Mike Stanley is AUT Millennium Chief Executive & NZ Olympic Committee President will explain the partners in the facility. AUT Millennium is a charitable trust established to help New Zealanders live longer and healthier lives, and to enjoy and excel in sport through the provision of world-class facilities, services, research and education. Founded in 2002 as Millennium Institute of Sport and Health (MISH) by Sir Stephen Tindall and Sir Graeme Avery as a premium health and fitness facility for both athletes and the public alike. Partnered with AUT University in 2009, forming AUT Millennium, to expand research and education in the sporting sector. Professor Barry Wilson is an Adjunct Professor with SPRINZ at Auckland University of Technology and will be outlining the research and student opportunities. Martin Dowson is the General Manager Athlete Performance Support at High Performance Sport New Zealand and has overall responsibility for the programme. Simon Briscoe, AUT Millennium Applied Session Coordinator, is the head of the Performance and Technique Analysis discipline within HPSNZ. Simon is coordinating the applied sessions along with technical support from Dr Allan Carman, Research Fellow, AUT SPRINZ. Jodi Cossor and Matt Ingram will provide a demonstration of a multidisciplinary approach driven by biomechanical analysis for Paralympic swimmers. Justin Evans and Sarah-Kate Millar will provide a practical session assessing the athletes rowing stroke to assist the coach on technical changes. This session will demonstrate various rowing traits and how the Biomechanist and coach can work together to optimise boat speed. Mike Schofield and Kim Hébert-Losier will provide a session looking at shotput and the evidence based approach to coaching. Dr Craig Harrison and Professor John Cronin will provide examples from the AUTM Athlete Development programme. Kim Simperingham and Jamie Douglas who work with high performance rugby athletes will outline sprinting mechanics in practice. Dr Bruce Hamilton, Fiona Mather, Justin Ralph and Rone Thompson will demonstrate the approach of HPSNZ and Cycling NZ performance health teams in the use of some specific tools for prevention of injury and optimisation of performance. Kelly Sheerin, Denny Wells and Associate Professor Thor Besier will provide examples of using IMU and motion capture methods for running and basketball biomechanics research, education and service. Dr Rodrigo Bini and Associate Professor Andrew Kilding will show how linking of biomechanics and physiology improves injury prevention and performance enhancement. Robert Tang, Andre de Jong and Farhan Tinwala discuss select projects developed by Goldmine, HPSNZ’s in-house engineering team, and how these innovations have enabled unprecedented levels of biomechanics feedback. Cameron Ross and Paul McAlpine demonstrate the technology being used at the Snow Sports NZ training centre in Cadrona to enhance load monitoring of athletes. This application allows greater insight into training performances and biomechanical loads than has been previously possible in the training environment. AUT Millennium tour guides are coordinated by Josh McGeown and include Enora Le Flao, Dustin Oranchuk, Erika Ikeda, Jono Neville, Aaron Uthoff, Andrew Pichardo, Farhan Tinwala, Shelley Diewald, Renata Bastos Gottgtroy, Jessica Yeoman, Casey Watkins, Eric Harbour, Anja Zoellner, Alyssa Joy Spence, Victor Lopez Jr, and Albert Chang
Richard W. Kent - One of the best experts on this subject based on the ideXlab platform.
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Searching for the “sweet spot”: the foot rotation and parallel engagement of ankle ligaments in maximizing injury tolerance
Biomechanics and Modeling in Mechanobiology, 2017Co-Authors: Bingbing Nie, Jason L. Forman, Alexander R. Mait, John-paul Donlon, Matthew B. Panzer, Richard W. KentAbstract:Ligament sprains, defined as tearing of bands of fibrous tissues within ligaments, account for a majority of injuries to the foot and ankle complex in field-based sports. External rotation of the foot is considered the primary injury mechanism of syndesmotic ankle sprains with concomitant flexion and inversion/eversion associated with particular patterns of ligament trauma. However, the influence of the magnitude and direction of loading vectors to the ankle on the in situ stress state of the ligaments has not been quantified in the literature. The objective of the present study was to search for the maximum injury tolerance of a human foot with an acceptable subfailure distribution of individual ligaments. We used a previously developed and comprehensively validated foot and ankle model to reproduce a range of combined foot rotation experienced during high-risk sports activities. Biomechanical computational investigation was performed on initial foot rotation from $$20{^{\circ }}$$20∘ of plantar flexion to $$15{^{\circ }}$$15∘ of dorsiflexion, and from $$15{^{\circ }}$$15∘ of inversion to $$15{^{\circ }}$$15∘ of eversion prior to external rotation. Change in initial foot rotation shifted injury initiation among different ligaments and resulted in a wide range of injury tolerances at the structural level (e.g., 36–125 Nm of rotational moment). The observed trend was in agreement with a parallel experimental study that initial plantar flexion decreased the incidence of syndesmotic injury compared to a neutral foot. A mechanism of distributing even loads across ligaments subjected to combined foot rotations was identified. This mechanism is potential to obtain the maximum load-bearing capability of a foot and ankle while minimizing the injury severity of ligaments. Such improved understanding of ligament injuries in athletes is necessary to facilitate injury management by clinicians and countermeasure development by Biomechanists.
Elliott Bruce - One of the best experts on this subject based on the ideXlab platform.
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WIZE WIZARDS WORDS OF WIZDOM
NMU Commons, 2018Co-Authors: Hume Patria, Alderson Jacqueline, Elliott Bruce, Hamill Joseph, Herzog Walter, Terauds Juris, Irwin GarethAbstract:In keeping with our Kiwiana theme, we will have a Wise Wizards Panel (yes, think Lord of the Rings movie) to answer interactive questioning from the delegates. Panel members are prestigious previous Geoffrey Dyson awardees, Life members, and ISBS Fellows: Professors Patria Hume, Bruce Elliott, Joe Hamill, Walter Herzog and Juris Terauds. Professor Walter Herzog is a Professor at the University of Calgary. Professor Joe Hamill is currently President of the International Society of Biomechanics. Professor Patria Hume was the inaugural SPRINZ Director at the Auckland University of Technology. Professor Juris Terauds and Professor Bruce Elliott are both Emeritus Professors. Professor Bruce Elliott’s philosophy has always been “a good question leads to beneficial research”. Come prepared to ask these wise Biomechanists all the things you have ever wanted to know about biomechanics, as a discipline and a career. Via the session chairs Associate Professor Jacqueline Alderson and Professor Gareth Irwin, and using a dedicated feed arranged by our ISBS Social Media Coordinator Kylie Robinson, you will be able to ask questions like; What does it take to have a successful academic career as a Biomechanist? Where are some of the best experiences that can be gained in applied biomechanics? What is your crystal ball prediction of what biomechanics specialists will focus on in 10 years time? We hope that delegates, especially student and early career researchers, take up this unique opportunity to gather insight from those in whose footsteps they walk
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Coding OSICS sports injury diagnoses in epidemiological studies : Does the background of the coder matter?
2012Co-Authors: Finch Caroline, Orchard John, Twomey Dara, Saleem, Muhammad Saad, Ekegren Christina, Lloyd David, Elliott BruceAbstract:Objective: To compare Orchard Sports Injury Classification System (OSICS-10) sports medicine diagnoses assigned by a clinical and non-clinical coder. Design: Assessment of intercoder agreement. Setting: Community Australian football. Participants: 1082 standardised injury surveillance records. Main outcome measurements: Direct comparison of the four-character hierarchical OSICS-10 codes assigned by two independent coders (a sports physician and an epidemiologist). Adjudication by a third coder (Biomechanist). Results: The coders agreed on the first character 95% of the time and on the first two characters 86% of the time. They assigned the same four-digit OSICS-10 code for only 46% of the 1082 injuries. The majority of disagreements occurred for the third character; 85% were because one coder assigned a non-specific 'X' code. The sports physician code was deemed correct in 53% of cases and the epidemiologist in 44%. Reasons for disagreement included the physician not using all of the collected information and the epidemiologist lacking specific anatomical knowledge. Conclusions: Sports injury research requires accurate identification and classification of specific injuries and this study found an overall high level of agreement in coding according to OSICS-10. The fact that the majority of the disagreements occurred for the third OSICS character highlights the fact that increasing complexity and diagnostic specificity in injury coding can result in a loss of reliability and demands a high level of anatomical knowledge. Injury report form details need to reflect this level of complexity and data management teams need to include a broad range of expertise. Copyright Article author (or their employer) 2012
Bc Elliott - One of the best experts on this subject based on the ideXlab platform.
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Coding OSICS sports injury diagnoses in epidemiological studies: does the background of the coder matter?
'BMJ', 2014Co-Authors: Cf Finch, Jw Orchard, Dm Twomey, Saleem Ms, Cl Ekegren, Dg Lloyd, Bc ElliottAbstract:OBJECTIVE: To compare Orchard Sports Injury Classification System (OSICS-10) sports medicine diagnoses assigned by a clinical and non-clinical coder. DESIGN: Assessment of intercoder agreement. SETTING: Community Australian football. PARTICIPANTS: 1082 standardised injury surveillance records. MAIN OUTCOME MEASUREMENTS: Direct comparison of the four-character hierarchical OSICS-10 codes assigned by two independent coders (a sports physician and an epidemiologist). Adjudication by a third coder (Biomechanist). RESULTS: The coders agreed on the first character 95% of the time and on the first two characters 86% of the time. They assigned the same four-digit OSICS-10 code for only 46% of the 1082 injuries. The majority of disagreements occurred for the third character; 85% were because one coder assigned a non-specific 'X' code. The sports physician code was deemed correct in 53% of cases and the epidemiologist in 44%. Reasons for disagreement included the physician not using all of the collected information and the epidemiologist lacking specific anatomical knowledge. CONCLUSIONS: Sports injury research requires accurate identification and classification of specific injuries and this study found an overall high level of agreement in coding according to OSICS-10. The fact that the majority of the disagreements occurred for the third OSICS character highlights the fact that increasing complexity and diagnostic specificity in injury coding can result in a loss of reliability and demands a high level of anatomical knowledge. Injury report form details need to reflect this level of complexity and data management teams need to include a broad range of expertise