The Influence Of Residual Fatigue On Lower Limb Stiffness During Jump Landing PDF Download
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Author | : Lindsay Victoria Slater |
Publisher | : |
Total Pages | : 148 |
Release | : 2010 |
Genre | : |
ISBN | : |
Download The Influence of Residual Fatigue on Lower Limb Stiffness During Jump Landing Book in PDF, ePub and Kindle
Background: Anterior cruciate ligament (ACL) injuries have become commonplace among female athletes in today's society. With more than 70% of injuries resulting from noncontact mechanisms such as jump landing, the relationship between fatigue and altered movements patterns has become an important topic of research. Purpose: The main purpose of this study was to investigate the influence of residual fatigue on lower extremity kinematics and vertical leg stiffness at landing as experienced by female athletes. Method: The participants in this study were 12 NCAA female intercollegiate soccer players. Participants completed five single-leg drop jumps on their dominant leg every day for 4 days. The first day was completed without intervention to obtain pre-fatigue data and drop jumps on days two through four were completed after a fatigue protocol. Results: A repeated measures MANOVA did not reveal significant differences in post-fatigue peak knee flexion angle, vertical ground reaction forces, or vertical leg stiffness. Despite lack of statistical significance, vertical leg stiffness was increased during post-fatigue testing when compared to pre-fatigue values. Implications: The increased vertical leg stiffness may indicate altered landing techniques in post-fatigue states. If fatigue results in compromised movement patterns, it may explain the increased number of ACL injuries during the end of soccer matches. Suggestions for Future Research: Future research with a larger sample size should include post-fatigue dominant and nondominant leg comparison due to previous conflicting findings regarding which limb is most often injured. Future researchers should also quantify the magnitude of fatigue induced by the fatiguing protocol to document the strength of the independent variable.
Author | : David Cameron |
Publisher | : |
Total Pages | : 294 |
Release | : 2007 |
Genre | : |
ISBN | : |
Download Differences in Lower-limb Stiffness During Jump Landing in Athletes with and Without Unilateral Chronic Ankle Sprain Book in PDF, ePub and Kindle
Author | : Michal Lehnert |
Publisher | : Palacký University Olomouc |
Total Pages | : 182 |
Release | : |
Genre | : Medical |
ISBN | : 8024455595 |
Download The influence of fatigue on injury risk in male youth soccer Book in PDF, ePub and Kindle
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.
Author | : Ashley S. Long |
Publisher | : |
Total Pages | : 127 |
Release | : 2005 |
Genre | : |
ISBN | : 9781109846225 |
Download The Effects of a Functional Fatigue Protocol on Landing Kinetics and Kinematics of the Lower Extremity Book in PDF, ePub and Kindle
Discussion. Significant changes in time to peak GRF, time to peak of maximum knee flexion, muscle activation and temporal patterning may suggest a kinematic difference in landing form in a fatigued state.
Author | : Emma Louise Millett |
Publisher | : |
Total Pages | : 305 |
Release | : 2016 |
Genre | : Exercuse |
ISBN | : |
Download Influence of Athletic Training on Functional Lower-extremity Stiffness Book in PDF, ePub and Kindle
Stiffness of the leg spring quantifies the relationship between the amount of leg flexion and the external load to which limbs are subjected. Lower limb stiffness is essential to facilitate athlete performance and injury risk minimisation. However, stiffness modulation is reliant upon the task requirements, the individual's training status and the athletic training background of individuals. A systematic review highlighted a need to develop an understanding of how differing female athletic populations optimise stiffness to meet task demands and identify appropriate monitoring tools for athlete screening and subsequent longitudinal tracking of leg stiffness changes including potential associations with increased injury risk. Four studies were undertaken; 1) to investigate leg stiffness, joint stiffness and modulation strategy differences in female sub-populations from varied training backgrounds during discrete jumping tasks, 2) to evaluate the differences in leg stiffness between female sub-populations from varied training backgrounds during dynamic jumping and sports-specific tasks and to compare the observed stiffness measures between the tasks, 3) to assess differences in leg and joint stiffness in varying athletic populations during functional tasks and investigate the kinematic and kinetic mechanisms athletes utilise to modulate stiffness to meet sports-specific task demands, and 4) to evaluate longitudinal changes in stiffness across a season of training during dynamic and sports-specific tasks and evaluate potential links to injury risk in athletes. It was hypothesised that stiffness and the contributory kinetic and kinematic modulation strategies athletes utilise would differ between sub-populations. It was also theorised dynamic reactive jumping tasks may provide an adequate relationship to sports-specific tests. Additionally, it was expected that longitudinal changes in stiffness would be evident within the assessed athletic populations. Forty-seven female participants (20 nationally identified netballers, 13 high level endurance athletes and 14 age and gender matched controls) completed six unilateral tasks grouped into two categories; 1) discrete jumping tasks, traditionally utilised to assess stiffness (countermovement jump, drop jump, horizontal jump) and 2) functional sports-specific tasks (sprint, anticipated sidestep change of direction and repetitive hopping). Data was captured using a 10 camera motion analysis system (500 Hz) and force plate (1000 Hz) at three training phases; pre, post and off-season. Participants' self-reported lower body non-contact sports related injury incidence. Statistical analysis evaluated leg stiffness, joint stiffness, contributory kinematic mechanisms and prospective injury risk. No significant differences were evident in leg stiffness measures (p=0.321-0.849) during the discrete jumping tasks despite variations in the underlying contributory mechanisms (p
Author | : Semyon M. Slobounov |
Publisher | : Springer Science & Business Media |
Total Pages | : 539 |
Release | : 2008-06-17 |
Genre | : Medical |
ISBN | : 0387725776 |
Download Injuries in Athletics: Causes and Consequences Book in PDF, ePub and Kindle
Over the past decade, the scientific information on psychology of injury has increased considerably. Despite dramatic advances in physical education of coaches, field of medicine, athletic training, and physical therapy, the sport-related traumatic injuries is our major concern. Athletic injuries, both single and multiple, have a tendency to grow dramatically. Accordingly, prevention of sport-related injuries is a major challenge facing the sport medicine world today. The purpose of this book is to accumulate the latest development in psychological analyses, evaluation, and management of sport-related injuries, including traumatic brain injuries. No two traumatic injuries are alike in mechanism, symptoms, or symptoms resolution. There is still no agreement upon psychological diagnosis and there is no known comprehensive treatment for sport-related injuries for regaining pre-injury status. Physical symptoms resolution is not an indication of "psychological trauma" resolution.
Author | : Dennis J. Caine |
Publisher | : John Wiley & Sons |
Total Pages | : 418 |
Release | : 2013-07-18 |
Genre | : Medical |
ISBN | : 1118357574 |
Download Handbook of Sports Medicine and Science Book in PDF, ePub and Kindle
This new volume in the Handbook of Sports Medicine and Science series, published in conjunction with the Medical Commission of the International Olympic Committee, offers comprehensive and practical guidance on the training and medical care of competitive gymnasts. Written and edited by leading trainers, team doctors, coaches and other professionals with unparalleled experience in elite gymnastics, this book covers all the key aspects of caring for gymnasts, minimizing the unique risks these athletes face, and treating injuries when they happen. The book is organized into 4 sections covering: The evolution of gymnastics Growth and development Training and performance Sports medicine Individual chapters cover key topics such as energy needs and body weight management; biomechanics; psychology; the epidemiology of gymnastic injuries; treatment and rehabilitation of common injuries; injury prevention; and more. Endorsed by the International Gymnastics Federation (FIG), no other book offers such an in-depth look at the unique considerations and challenges that affect the growth, performance, training, and medical care of athletes in this demanding sport.
Author | : H. Asada |
Publisher | : John Wiley & Sons |
Total Pages | : 286 |
Release | : 1991-01-16 |
Genre | : Technology & Engineering |
ISBN | : 9780471830290 |
Download Robot Analysis and Control Book in PDF, ePub and Kindle
Introduces the basic concepts of robot manipulation--the fundamental kinematic and dynamic analysis of manipulator arms, and the key techniques for trajectory control and compliant motion control. Material is supported with abundant examples adapted from successful industrial practice or advanced research topics. Includes carefully devised conceptual diagrams, discussion of current research topics with references to the latest publications, and end-of-book problem sets. Appendixes. Bibliography.
Author | : R. McNeill Alexander |
Publisher | : Cambridge University Press |
Total Pages | : 150 |
Release | : 1988-01-01 |
Genre | : Science |
ISBN | : 9780521349680 |
Download Elastic Mechanisms in Animal Movement Book in PDF, ePub and Kindle
Originally published in 1988, this book is about the uses and implications of elastic properties in various aspects of animal biology. After a brief study of the properties of elastic materials, the book considers the functions of springs in the bodies of animals. Drawing on specific examples, the uses of elastic structures as, amongst other things, muscle antagonists, energy stores, catapults and suspension springs are described. This book will be of value to anyone with an interest in animal mechanics.
Author | : Vladimir Zatsiorsky |
Publisher | : John Wiley & Sons |
Total Pages | : 680 |
Release | : 2008-04-15 |
Genre | : Medical |
ISBN | : 0470693045 |
Download Biomechanics in Sport: Performance Enhancement and Injury Prevention Book in PDF, ePub and Kindle
Biomechanics in Sport is a unique reference text prepared by the leading world experts in sport biomechanics. Over thirty chapters cover a broad spectrum of topics, ranging from muscle mechanics to injury prevention, and from aerial movement to wheelchair sport. The biomechanics of sports including running, skating, skiing, swimming, jumping in athletics, figure skating, ski jumping, diving, javelin and hammer throwing, shot putting, and striking movements are all explained.