Download or read book Isokinetic Muscular Strength and Performance in Youth Football written by Hollie Samantha Forbes and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary aim of the current project was to investigate the isokinetic muscular strength and performance of elite male youth footballers, and the relationships with age, seasonal variation and injury. A secondary aim was to use the information gathered to target muscle strain injury prevention strategies to particular age groups and times, and evaluate the effect. The primary aim was achieved by establishing normative patterns for muscular strength and performance of elite male youth footballers (grouped according to chronological and biological age) across a competitive season of youth football in Chapters Four and Five. Isokinetic muscular strength (characterised by peak torque (PT) and peak torque relative to body weight (PTBW)) of the hamstrings (H) and quadriceps (Q) using both concentric (CQ, CH) and eccentric muscle actions (EH) was evaluated. Muscular performance of the same muscle groups (characterised by H:Q ratios (conventional (CHQ) functional (FHQ)), asymmetry (dominant (dom):non dominant (ndom) leg ratios (e.g. CQ:CQ)), and angle of peak torque (AoPT)) was also investigated which necessitated an isokinetic speed of 60 °/s. Isokinetic evaluation was completed three times over the course of a regular playing season (start of season (SS) mid season (MS) and end of season (ES)). Participants were grouped according to chronological age (n=152, under 12 (U12) - under 18 (U18)) and biological maturation (according to Pubertal Development Scale (PDS 1 - 5) n=134). Forty seven participants completed SS, MS and ES isokinetic evaluation. Bilateral isokinetic evaluation consisted of five maximal repetitions of CQ and CH, followed by five repetitions of EH, leg dominance was counter-balanced. Repetitions two-four were used to calculate PT, PTBW, dom:ndom and AoPT for CQ, CH and EH, CHQ and FHQ; these measures were compared across chronological and biological age groups using a mixed model ANOVA. Dom:ndom CQ, CH and EH were compared across chronological and biological age groups using a one way ANOVA, while the relationship between AoPT and PT/PTBW was considered using a Pearson's correlation. Additionally, the relationship between chronological and biological age, and PT/PTBW was investigated using a mixed model ANOVA within PDS group three. For analysis of seasonal variation a mixed model ANOVA was applied for all isokinetic measurements which considered time (SS, MS, ES), leg dominance (dom, ndom) and age group (U12 -U15) with a further mixed model ANOVA performed on CQ:CQ, CH:CH and EH:EH. Where appropriate SIDAK corrections were applied and the level of significance was accepted at p≤0.05. The main findings were that youth footballers did not increase their PT and PTBW EH in-line with CQ and CH as chronological and biological ageing progressed, this lead to a significant FHQ imbalance at U18. Dom:ndom CH comparisons identified that the chronologically younger and biologically less developed groups displayed a significantly stronger dom leg which may be explained through the concepts of skill acquisition and trainability. Biological age was not found to exert any additional effect over and above that of chronological ageing as significant differences in muscle strength still existed according to chronological age group within PDS group three. Additionally, AoPT EH and PT EH were found to be significantly negatively correlated on both legs which supported a potential mechanism for non contact hamstring muscle strain injury during running. Analysis of seasonal variation revealed that all PTBW measures showed a MS decrease. This may be related to breaks in normal training activity and links appropriately to times of peak injury incidence highlighted in youth football. In order to achieve the secondary aim of the current project Chapters Four, Five and Six investigated the relationship between isokinetic muscular strength and performance, muscle strain injury of the thigh, and injury risk attenuation. A retrospective and prospective injury audit was undertaken for the elite male youth football participants. For the retrospective approach participants were grouped according to chronological age (n=147) or biological age (n=128) and indicated using a self-report injury form their history (ever, (Hx)) or recent history (12 months, (Hx12)) of hamstring, quadriceps and adductor injuries. Approximately each player had an Hx of muscle strain injury and 0.56-0.59 of players had an Hx12. The hamstrings were the most commonly injured muscle group and the prevalence of muscle strain injury Hx and Hx12 increased with chronological and biological age. The prospective audit (n=50) identified that 0.16 of players sustained a muscle strain injury during the season, 0.08 of these being to the hamstrings. Between group comparisons (one way ANOVA with SIDAK correction) were also performed to investigate the difference in isokinetic measures between those participants who had an Hx12 of muscle strain injury and those who did not. It was discovered that for Hx12 of an injury to the dom hamstrings the injured group had less PTBW CH and EH on the dom leg. The injured group also had more inner range AoPT CH. These findings linked appropriately to the reported mechanisms and risk factors for hamstring injury but the exact direction of cause and effect could not be established. To this end a logistic regression analysis was undertaken in an attempt to predict which group (injured vs. non injured the 50 participants would belong to, using evidenced based risk factors in the experimental model. No predictive relationship between risk factors (including altered isokinetic muscular strength and performance) could be established. The information regarding the relationship between injury and muscular strength and performance may highlight a role for isokinetic screening to ensure adequate rehabilitation from injury. Injury risk attenuation strategies were investigated through an exercise intervention using the U18 age group following a break from football activity. The participants were split based on their FHQ at initial isokinetic evaluation (via odd and even placing) to form control (n=8) and intervention groups (n=8). Isokinetic evaluation was conducted as previously outlined and the exercise intervention targeted the hamstrings. Only six of the control group and seven of the intervention group completed the study and were compared using a mixed model ANOVA. Results showed that the intervention group were not significantly different to the control group post intervention for any of the isokinetic muscular strength and performance measures, though both groups significantly improved over time for the ndom leg CHQ and PTBW EH, and FHQ improved for both legs. Contamination of the control group may explain the lack of significant difference between groups. However, the exercise intervention was not targeted to individuals who displayed prior alterations to isokinetic muscular strength and performance, and this approach was discussed using the results of one member of the intervention group. In summary, the current project achieved the stated aims by discovering normative patterns of isokinetic muscular strength and performance according to age and seasonal variation. Injury risk attenuation strategies were targeted appropriately to the U18 age group following a break from football activity. However, the applied evidence based exercise may have been more effective if targeted to 'risk' after isokinetic screening.
Download or read book Isokinetics in Human Performance written by Lee E. Brown and published by Human Kinetics. This book was released on 2000 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table of Contents Contributors vii Preface ix Acknowledgments xi Credits xii Part I Foundations 1 Chapter 1 Test Interpretation 3 Chapter 2 Specificity of Training Modes 25 Chapter 3 Correlations With Athletic Performance 42 Part II Limitations 75 Chapter 4 Assessing Human Performance 77 Chapter 5 Load Range 97 Chapter 6 Three-Dimensional Mapping 122 Part III Functional Applications 147 Chapter 7 Testing and Training the Upper Extremity 149 Chapter 8 Testing and Training the Lower Extremity 171 Chapter 9 Multiple-Joint Performance Over a Velocity Spectrum 196 Chapter 10 Control of Voluntary Contraction Force 209 Chapter 11 Isokinetic Eccentric Muscle Actions 229 Chapter 12 Functional Lift Capacity 240 Chapter 13 Testing the Spine 258 Chapter 14 The Cardiovascular Effects of Isokinetic Resistance Exercise 277 Part IV Unique Populations 297 Chapter 15 Youth and Isokinetic Testing 299 Chapter 16 Aging and Isokinetic Strength 324 Chapter 17 Gender Differences in Isokinetic Strength 339 Chapter 18 Isokinetic Testing and Training in Tennis 358 Chapter 19 Assessment and Training in Baseball 378 Chapter 20 Assessment for Football: Soccer, Australian Rules, and American 407 Chapter 21 Simulated Space Flight 429 Epilogue 446 Index 447 About the Editor 457.
Download or read book Science and Football Routledge Revivals written by Tom Reilly and published by Routledge. This book was released on 2013-01-11 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1988, this book contains edited and revised papers presented at the first World Congress of Science and Football. Held under the auspices of the International Council of Sport, Science, and Physical Education, the Congress was a unique gathering of international scientists researching into football and practitioners professionally involved in the many football codes. American football, soccer, rugby league, rugby union, Australian rules, Gaelic football and national variations of these games are all covered in depth, in both amateur and professional systems. Nutrition, biomechanics, equipment, physiology, sociology, psychology, coaching, management, training, tactics, strategy are among the main subject areas the contributors cover. With over 22 countries represented and with players, managers and coaches involved as well as academics the book represents a truly international, comprehensive and practical picture of contemporary football.
Download or read book Science and Football written by A. Mark Williams and published by Taylor & Francis. This book was released on 2023-05-22 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a state-of-the-art overview of the science underpinning talent identification and development in the world’s most popular sport. It covers a broad range of topics that span the various sub-disciplines of sports science with contributions from some of the foremost scientists and applied practitioners globally. The chapters provide readers with a comprehensive insight into how sport science is helping practitioners to create more evidence-based approaches when attempting to identify and develop future generations of elite players rather than relying on tradition and precedence. This book dispels some of the myths involved in talent identification and highlights how science is playing an ever-increasing role in guiding and shaping the practices used at the most renowned professional clubs across the globe. It is a must-read for anyone involved in the game at any level including sports scientists, medical staff, coaches, and administrators. This book was originally published as a special issue of the Journal of Sports Sciences.
Download or read book Isokinetic Muscular Performance in Adolescents written by Ping Chien and published by . This book was released on 199? with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strength Training for Soccer written by Daniel Guzman and published by Human Kinetics. This book was released on 2022-06-27 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book is an authoritative, practical guide to designing resistance training programs for soccer. It provides principles of resistance training, exercise descriptions, program design guidelines, and sample programs"--
Download or read book Isokinetics written by Zeevi Dvir and published by . This book was released on 1995 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is over 25 years since isokinetic dynamometry was first introduced into clinical practice and exercise science. Physical therapy, in particular, has benefited significantly from this technology, which rapidly became the tool of choice in hundreds of research papers as well as the cornerstone of quantitative muscle performance assessment in the clinical setting. About 1984, the technology behind isokinetic dynamometry made considerable progress when computers were incorporated to control the hardware, that is the integral power sources and the on-line processing of mechanical signals. This enabled users to establish a common basis for carrying out eccentric contractions and to obtain comprehensive information on muscle strength immediately. This book does not pretend to cover all the topics that have been examined under isokinetics. Nor is it intended to be a quick and superficial introduction to clinical applications. Rather, it is aimed at those who have at least some experience and are at a stage where they are beginning to ask some very serious questions and would not necessarily be happy with very simple answers.
Download or read book Research Methodology for Allied Health Professionals written by Animesh Hazari and published by Springer Nature. This book was released on with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neuromuscular Training and Adaptations in Youth Athletes written by Urs Granacher and published by Frontiers Media SA. This book was released on 2018-11-02 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Frontiers Research Topic entitled "Neuromuscular Training and Adaptations in Youth Athletes" contains one editorial and 22 articles in the form of original work, narrative and systematic reviews and meta-analyses. From a performance and health-related standpoint, neuromuscular training stimulates young athletes' physical development and it builds a strong foundation for later success as an elite athlete. The 22 articles provide current scientific knowledge on the effectiveness of neuromuscular training in young athletes.
Download or read book The Elite Young Athlete written by Neil Armstrong and published by Karger Medical and Scientific Publishers. This book was released on 2011 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: A key resource for coaches, scientists and clinicians Sport is by its nature competitive and even during youth it is performed at different levels with elite young athletes at the top of the performance pyramid. A coordinated series of comprehensive, research-based reviews on factors underlying the performance of children and adolescents involved in competitive sport is presented in this volume. Leading exercise and sport scientists provide the latest information on the physiology of young elite athletes, the essential role of nutrition, and the effects of endurance, high-intensity and high-resistance training and overtraining as well as on the importance of laboratory and field-based monitoring of young athletes' performances. Further, thermoregulation and environmental factors that might affect performance are re-viewed. Finally, strategies for preventing sudden cardiac death and the diagnosis and management of common sport injuries in young athletes are discussed. The book provides up-to-date, evidence-based information for sports scientists, coaches, physiotherapists, pediatric sports medicine specialists, and other professionals involved in supporting elite young athletes.
Download or read book The Effects of Isokinetic Weight Training on the Selected Muscular Strength of Seventh Grade Boys written by Richard V. Henderson and published by . This book was released on 1974 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Science and Football VII written by Hiroyuki Nunome and published by Routledge. This book was released on 2013-05-02 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Science and Football VII showcases the very latest scientific research into the variety of sports known as ‘football’. These include soccer, the national codes (American football, Australian rules football and Gaelic football), and the rugby codes (union and league). Bridging the gap between theory and practice, this book is by far the most comprehensive collection of current research into football, presenting important new work in key areas such as: physiology of training performance analysis fitness assessment nutrition biomechanics injury and rehabilitation youth football environmental physiology psychology in football. Science and Football VII is an essential resource for all sport scientists, trainers, coaches, physical therapists, physicians, psychologists, educational officers and professionals working across the football codes. The papers contained within this volume were first presented at the Seventh World Congress on Science and Football, held in May 2011 in Nagoya, Japan. The meeting was held under the auspices of the International Steering Group on Science and Football, a representative member of the World Commission of Science and Sports.
Download or read book Oxford Textbook of Children s Sport and Exercise Medicine 4e written by and published by Oxford University Press. This book was released on 2023-07-26 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 4th edition of the Oxford Textbook of Children's Sport and Exercise Medicine is the definitive single-volume reference in the field presented in four sections Exercise Science; Exercise Medicine; Sport Science; and Sport Medicine.
Download or read book Strength and Conditioning for Sports Performance written by Ian Jeffreys and published by Routledge. This book was released on 2021-03-29 with total page 741 pages. Available in PDF, EPUB and Kindle. Book excerpt: An effective strength and conditioning program is an essential component of the preparation of any athlete or sportsperson. Strength and Conditioning for Sports Performance is a comprehensive and authoritative introduction to the theory and practice of strength and conditioning, providing students, coaches and athletes with everything they need to design and implement effective training programs. Revised and updated for a second edition, the book continues to include clear and rigorous explanations of the core science underpinning strength and conditioning techniques and give detailed, step-by-step guides to all key training methodologies, including training for strength, speed, endurance, flexibility and plyometrics. The second edition expands on the opening coaching section as well as introducing an entirely new section on current training methods which includes examining skill acquisition and motor learning. Throughout the book the focus is on the coaching process, with every chapter highlighting the application of strength and conditioning techniques in everyday coaching situations. Strength and Conditioning for Sports Performance includes a unique and extensive section of sport-specific chapters, each of which examines in detail the application of strength and conditioning to a particular sport, from soccer and basketball to golf and track and field athletics. The second edition sees this section expanded to include other sports such as rugby union, rugby league and American football. The book includes contributions from world-leading strength and conditioning specialists, including coaches who have worked with Olympic gold medallists and international sports teams at the highest level. Strength and Conditioning for Sports Performance is an essential course text for any degree-level student with an interest in strength and conditioning, for all students looking to achieve professional accreditation, and an invaluable reference for all practising strength and conditioning coaches.
Download or read book Youth Soccer written by Thomas Reilly and published by Routledge. This book was released on 2004-09-16 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Youth Soccer: From Science to Performance blends contemporary child-focussed sports science theory with youth specific coaching practice to help create evidence soccer development strategies for children.
Download or read book Conditioning Young Athletes written by Tudor O. Bompa and published by Human Kinetics. This book was released on 2015-06-18 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conditioning for Young Athletes provides coaches, instructors, teachers, and parents of future sport stars the best training advice, exercises, and programs for establishing an overall fitness base and maximizing athletic development for youth. This authoritative guide includes numerous exercises that safely increase young athletes’ coordination, flexibility, speed, strength, and endurance. It contains a proven regimen geared to three developmental phases, long- and short-term training plans, and specific programs for sports such as baseball, basketball, football, ice hockey, soccer, swimming, and track and field. Tudor Bompa brings you the expertise that has helped train everyone from youth athletes to Olympic champions. Together with Michael Carrera, he provides parents, teachers, and coaches with more than 182 exercises appropriate for children ages 6 to 18. These exercises take into consideration critical factors such as a child’s developmental stage, motor functioning, and sex-specific considerations to ensure that the workouts do not hinder development and growth. Regardless of the sport, Conditioning Young Athletes has you covered with ready-to-use programs for both short-term and long-term development.
Download or read book The influence of fatigue on injury risk in male youth soccer written by Michal Lehnert and published by Palacký University Olomouc. This book was released on with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents information regarding changes in lower limb injury risk factors when fatigue is present, and the role of genetics in injury risk in male youth soccer. As many internal risk factors are modifiable, information presented both in the theoretical part of the book and original research studies focuses on the influence of acute, residual and accumulated fatigue on physiological mechanisms are presented to aid sports scientists and coaches to understand the age related effects of fatigue on such factors. This information can help coaches monitor fatigue related responses and be able to create efficient training programmes during important periods of growth and maturation. This will help to enhance performance and reduce injury risk in youth male soccer.
