Download or read book The Influence of Neuromuscular Factors on Anterior Cruciate Ligament Loading in Response to External Force Perturbations written by Joshua T. Weinhandl and published by . This book was released on 2011 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Hamstring Musculo articular Stiffness on Biomechanical Factors Indicative of Anterior Cruciate Ligament Loading written by Justin Phillip Waxman and published by . This book was released on 2017 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Noncontact anterior cruciate ligament (ACL) injuries commonly occur upon initial foot contact (IC) with the ground during single-leg cutting or jump-landing maneuvers. Because these injuries occur in the absence of physical contact with another player or object, it is believed that some of these injuries may be avoided through intervention strategies aimed to target modifiable injury risk factors. In this regard, hamstring musculo-articular stiffness (KHAM) may play a critical role in protecting the ACL during functional athletic movements by helping resist biomechanical characteristics indicative of ACL loading, such as proximal tibia anterior shear force (PTASF), anterior tibial translation (ATT), and anterior tibial acceleration (ATA). However, current evidence regarding the influence of KHAM on knee joint biomechanics is limited to studies of non-weight bearing perturbations and double-leg landing tasks, which may not adequately represent the single-leg landing situations in which noncontact injuries commonly occur. Additionally, males and females have been included in the same analyses without accounting for between-sex differences that may confound reported relationships. Thus, the purposes of this study were to: 1) compare the neuromuscular and biomechanical demands of a double-leg stop-jump (DLSJ) task to that of a single-leg stop-jump (SLSJ) task in males and females; 2) determine, within each sex, the extent to which KHAM predicts ACL-loading characteristics during a SLSJ, after controlling for initial body positioning (i.e. trunk center-of-mass position and hip and knee flexion angles at IC); and 3) examine the extent to which a select group of anatomical, neuromuscular, and biomechanical characteristics collectively predict ACL-loading characteristics during a SLSJ. Eighty healthy, physically-active, males (n = 40) and females (n = 40) completed a 5-min warm-up, were measured for anterior knee laxity (AKL), quadriceps and hamstring maximal voluntary isometric contractions (MVIC), and KHAM, and then performed the DLSJ and SLSJ tasks, during which biomechanical and neuromuscular activation data were collected. Compared to the DLSJ, males and females performed the SLSJ with a more posterior trunk center-of-mass position (P
Download or read book The Effects of a Novel Core Stability Training Program on Neuromuscular Anterior Cruciate Ligament Risk Factors in Female Collegiate Soccer Players written by Alexis Camacho and published by . This book was released on 2019 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Anterior cruciate ligaments injuries make up nearly half of all lower extremity injuries in sports. Female athletes, particularly those involved in soccer, are at even higher risk of injury than their male counterparts due to neuromuscular, physiological, and anatomical risk factor differences. Poor neuromuscular control of the core can cause poor mechanics of the lower extremity leading to an increased risk of ACL injury. Biomechanical variables such as vertical ground reaction force, knee abduction moments, and knee flexion during a side-cut are key risk factors that can be altered by a core stability training intervention. A 3-Dimensional analysis of these variables during a 90° side-cut task was conducted across three time points (pre, mid, post-training program). Subjects (n = 9) were randomly assigned to either the control (n = 4) or intervention (n = 5) group. Plank tests were also conducted at each testing session to assess core stability. The intervention group participated in three sessions a week for a duration of 8 weeks of core stability training. No significant differences were seen in peak knee flexion, peak abduction moment, vertical ground reaction force, and plank times (p = 0.876, p = 0.369, p = 0.748, p = 0.057, respectively). On a case-by-case basis, the intervention group had minor biomechanical improvements similar to previous research, but a limited sample size may not be a true reflection of the positive effects the intervention could have had with a larger sample size.
Download or read book Neuroplastic and Neuromuscular Effects of Knee Anterior Cruciate Ligament Injury written by Dustin R. Grooms and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Anterior cruciate ligament (ACL) ruptures are common activity-related knee injuries usually requiring surgical reconstruction and extensive rehabilitative therapy to restore knee stability and function. Despite surgical reconstruction and physical rehabilitation, injury of the ACL dramatically increases the risk for a second injury (re-tear or contralateral leg), costly and long-term disabling osteoarthritis as well as decreased lifelong physical activity. The mechanism of this injury is typically non-contact, meaning the individual experiences a loss of neuromuscular control during jump landing, running or a change of direction maneuver without contact from another person or any other external force. Current interventions focus on biomechanical adaptations, mitigating their effectiveness to address the full neuromuscular control system. In spite of the plethora of biomechanical and patient data collected over the last three decades, the re-injury rate has remained high, if returning to activity, and patient dysfunction remains prolonged. Previous investigators have observed central nervous system and somatosensory deficits despite ACL reconstruction and rehabilitation, and we suggest that this is likely due to a neuroplastic adaptation not currently understood. This project connects highly dynamic measures of knee neuromuscular function with whole brain activation patterns to generate a brain-behavior model. The integration of neuroimaging and biomechanics in this investigation identifies the central nervous system components of ACL injury not accounted for in current assessment and intervention techniques. Quantification of the underlying neurological changes that may be driving the biomechanical outcomes after ACL injury will allow neural correlates of function to be targeted in rehabilitation.
Download or read book Non contact ACL Injuries During Landing written by Ata Kiapour and published by . This book was released on 2013 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The anterior cruciate ligament (ACL) is one of the most common sites of the injury in the knee joint. Over 120,000 ACL injuries occur annually in the United States, mainly affecting the young athletic population with females at a reported 2-8 fold greater risk than males. Non-contact injuries constitute the predominant mechanism of ACL injury (in over 70% of ACL injuries) occur mainly during landing following a jump and lateral cutting maneuvers. Due to long term disabilities associated with ACL injury (i.e. joint instability, pain and early development of osteoarthritis), potential loss of sports participation and high costs associated with surgical reconstruction, prevention is an appealing option to avoid the complications associated with ACL injury. While many advances have been made in terms of surgical and rehabilitation interventions, patients who have suffered ACL injury face long-term consequences that include lowered activity levels, 10-25 % incidence of re-injury 5 years after return to sport and 50-100 % incidence of osteoarthritis within 10-15 years of injury, regardless of the treatment. Despite the substantial effort conducted on investigation of the non-contact ACL injuries, the mechanism of these injuries is not well understood. Many proposed risk factors can be categorized as anatomic, neuromuscular or biomechanical. However, just biomechanical and neuromuscular risk factors can be defined as modifiable factors, which can be modified through targeted intervention strategies in an effort to reduce the risk of injury. Identification of modifiable risk factors for ACL injury represents a major step in the reduction of the incidence of injury. A better understanding of the mechanisms underlying non-contact ACL injuries and associated risk factors, might serve to improve current prevention strategies and decrease the risk of early-onset knee osteoarthritis. This proposal aims to employ a unique combination of established ex vivo and in silico methods in order to gain an in depth understanding of knee joint biomechanics during dynamic landing (as an identified high-risk task) with a specific focus on ACL injury. The objectives of this dissertation were to investigate the non-contact ACL injury during landing in an effort to identify the potential biomechanical and neuromuscular risk factors and determine the mechanisms that lead to these injuries. Cadaveric experiments were conducted on 20 normal, relatively young instrumented lower extremities. Following knee arthrometry, specimens were tested under a wide range of quasi-static single- and multi-axial loading conditions in order to quantify the global the biomechanical response of the tibiofemoral joint with regards to joint kinematics, ACL and MCL strains, and intra-articular cartilage pressure distribution. Subsequently, multiple bi-pedal and uni-pedal landing scenarios were simulated using a custom designed novel drop-stand. An extensive physiologic loading protocol was designed based on the identified high-risk loading factors from quasi-static characterization to simulated a wide range of landing scenarios. The findings of these cadaveric experiments were suggested the anterior tibial shear force, knee abduction moment and internal tibial rotation moment as the most critical biomechanical risk factors for the non-contact ACL injury during landing. Results further suggested the multi-planar loading condition consists of all three identified biomechanical risk factors as the most probable mechanism for non-contact ACL injuries. Findings finally highlighted the importance of dynamic knee valgus collapse as a primary factor contributing to these injuries (Specific Aim I). In addition to cadaveric experiments, a detailed anatomic non-linear finite element (FE) model of the lower extremity was developed from imaging data of a healthy, young female athlete. The developed model includes bony and soft tissue structures of the knee joint such as major ligaments, trans-knee muscles, articular cartilage and menisci. The model was then extensively validated against cadaveric measurements of joint kinematics, ligament strains and cartilage pressure distribution under a wide range of static, quasi-static and dynamic loading conditions. A comprehensive FE parametric study was conducted in order to investigate the effect of trans-knee muscle loads on knee joint biomechanics and risk of ACL injury. The findings in combination with ex vivo data resulted in identification of the anterior-posterior and medial-lateral muscle force imbalances as the potential neuromuscular risk factors lead to high ACL strains and high risk of ACL injury (Specific Aim II). The developed FE model was further used to help better interpret the experimental findings in an effort to identify ACL injury biomechanical risk factors and associated mechanism (Specific Aim I). Finally a novel framework was developed in order to customize the validated generalized FE model based on the structural properties of ACL and critical tibiofermoral anatomic factors. The customized models were then validated based subject-specific ACL strain data obtained ex vivo. It was shown that the customized models using the proposed approach lead to more realistic FE-predicted ACL strain compared to the generalized FE model. Findings suggested that this novel, validated framework can be used as a critical risk-screening tool in the large-scale clinical assessment of ACL injury risk among individuals (Specific Aim III).
Download or read book Neuromuscular and Psychological Influences on Range of Motion Recovery in Anterior Cruciate Ligament Reconstruction Rehabilitation Patients written by Kathryn Hemsley and published by . This book was released on 2007 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ACL Injuries in Female Athletes written by Robin West and published by Elsevier Health Sciences. This book was released on 2018-12-07 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This easy-to-read reference presents a succinct overview of clinically-focused topics covering the prevention, treatment, and rehabilitation of ACL injuries in the female athlete. Written by two professional team physicians, it provides practical, focused information for orthopaedic and sports medicine surgeons and physicians. Covers ACL injury risk factors and prevention, including biomechanics, biology, and anatomy of the female athlete. Discusses graft choices, the biology of healing, rehabilitation and return to play, future options for treatment, and more. Addresses special considerations such as pediatric ACL and revision ACL. Consolidates today’s available information and experience in this timely area into one convenient resource.
Download or read book Sports Injuries written by Mahmut Nedim Doral and published by Springer Nature. This book was released on 2015-06-29 with total page 3295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sports Injuries: Prevention, Diagnosis, Treatment and Rehabilitation covers the whole field of sports injuries and is an up-to-date guide for the diagnosis and treatment of the full range of sports injuries. The work pays detailed attention to biomechanics and injury prevention, examines the emerging treatment role of current strategies and evaluates sports injuries of each part of musculoskeletal system. In addition, pediatric sports injuries, extreme sports injuries, the role of physiotherapy, and future developments are extensively discussed. All those who are involved in the care of patients with sports injuries will find this textbook to be an invaluable, comprehensive, and up-to-date reference.
Download or read book Return to Sport after ACL Reconstruction and Other Knee Operations written by Frank R. Noyes and published by Springer Nature. This book was released on 2019-11-05 with total page 709 pages. Available in PDF, EPUB and Kindle. Book excerpt: The wealth of information provided in this unique text will enable orthopedic surgeons, medical practitioners, physical therapists, and trainers to ensure that athletes who suffer anterior cruciate ligament (ACL) injuries, or who require major knee operations for other reasons, have the best possible chance of safely resuming sporting activity at their desired level without subsequent problems. Divided into seven thematic sections, the coverage is wide-ranging and encompasses common barriers to return to sport, return to sport decision-based models, and the complete spectrum of optimal treatment for ACL injuries, including preoperative and postoperative rehabilitation. Advanced training concepts are explained in detail, with description of sports-specific programs for soccer, basketball, and tennis. Readers will find detailed guidance on objective testing for muscle strength, neuromuscular function, neurocognitive function, and cardiovascular fitness, as well as validated assessments to identify and manage psychological issues. In addition, return to sport considerations after meniscus surgery, patellofemoral realignment, articular cartilage procedures, and knee arthroplasty are discussed. Generously illustrated and heavily referenced, Return to Sport after ACL Reconstruction and Other Knee Operations is a comprehensive resource for all medical professionals and support staff working with athletes and active patients looking to get back in the game with confidence.
Download or read book Prevention of Noncontact ACL Injuries written by Letha Y. Griffin and published by Academy. This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important work will help you understand: the epidemiology of noncontact ACL injuries; risk factors for injuries; the "at-risk" athlete; neuromuscular prevention programs; their influence on injury rates. Supported by the American Orthopaedic Society for Sports Medicine, the National Athletic Trainers Association Research and Education Foundation, the National Collegiate Athletic Association, and the Orthopaedic Research and Education Foundation.
Download or read book Science Theory and Clinical Application in Orthopaedic Manual Physical Therapy Applied Science and Theory written by Ola Grimsby and published by Lulu.com. This book was released on 2008-09-16 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long awaited textbook from The Ola Grimsby Institute provides decades of clinical experience and reasoning, with both historical and current evidence, with rationale for both passive and active treatments in orthopaedic manual therapy. Practical guidelines for joint mobilization and exercise rehabilitation are presented with this logical and exciting work. Incorporating experience and science, this book provides new approaches and treatment principles to make what you already do more effective. Extensive Content: Over 535 pages and 275 illustrations, photographs and tables Ola Grimsby and his co-authors have compiled a significant resource for the practicing physical therapist, manual therapist or osteopath.
Download or read book Muscles Alive Their Functions Revealed by Electromyography written by John V. Basmajian and published by . This book was released on 1967 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Understanding and Preventing Noncontact ACL Injuries written by American Orthopaedic Society for Sports Medicine and published by Human Kinetics Publishers. This book was released on 2007 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grade level: 11, 12, i, s, t.
Download or read book Handbook of Sports Medicine and Science written by Dennis J. Caine and published by John Wiley & Sons. This book was released on 2013-07-18 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book The Posterior Cruciate Ligament written by Michael Strobel and published by . This book was released on 2010 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basketball Sports Medicine and Science written by Lior Laver and published by Springer Nature. This book was released on 2020-10-05 with total page 1018 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is designed as a comprehensive educational resource not only for basketball medical caregivers and scientists but for all basketball personnel. Written by a multidisciplinary team of leading experts in their fields, it provides information and guidance on injury prevention, injury management, and rehabilitation for physicians, physical therapists, athletic trainers, rehabilitation specialists, conditioning trainers, and coaches. All commonly encountered injuries and a variety of situations and scenarios specific to basketball are covered with the aid of more than 200 color photos and illustrations. Basketball Sports Medicine and Science is published in collaboration with ESSKA and will represent a superb, comprehensive educational resource. It is further hoped that the book will serve as a link between the different disciplines and modalities involved in basketball care, creating a common language and improving communication within the team staff and environment.
Download or read book Science and Application of High Intensity Interval Training written by Laursen, Paul and published by Human Kinetics. This book was released on 2019 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: The popularity of high-intensity interval training (HIIT), which consists primarily of repeated bursts of high-intensity exercise, continues to soar because its effectiveness and efficiency have been proven in use by both elite athletes and general fitness enthusiasts. Surprisingly, few resources have attempted to explain both the science behind the HIIT movement and its sport-specific application to athlete training. That’s why Science and Application of High-Intensity Interval Training is a must-have resource for sport coaches, strength and conditioning professionals, personal trainers, and exercise physiologists, as well as for researchers and sport scientists who study high-intensity interval training.
