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Book The Effect of the Active Ankle Brace on Ground Reaction Forces

Download or read book The Effect of the Active Ankle Brace on Ground Reaction Forces written by Andrew D. Howell and published by . This book was released on 1995 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Effects of Ankle Braces on Ground Reaction Force During Drop Landings

Download or read book The Effects of Ankle Braces on Ground Reaction Force During Drop Landings written by David J. Dominguese and published by . This book was released on 1999 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Ankle Bracing on Ground Reaction Forces and Myoelectrical Activity of Selected Lower Extremity Muscles During Inversion Stress

Download or read book Effects of Ankle Bracing on Ground Reaction Forces and Myoelectrical Activity of Selected Lower Extremity Muscles During Inversion Stress written by Mitchell L. Cordova and published by . This book was released on 1997 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effect of Ankle Taping Or Bracing on Ground Reaction Force During Cutting Maneuvers

Download or read book Effect of Ankle Taping Or Bracing on Ground Reaction Force During Cutting Maneuvers written by Smadar Bezalel and published by . This book was released on 2009 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Effects of Ankle Bracing on Dynamic Stabilization in Subjects with Chronic Ankle Instability

Download or read book Effects of Ankle Bracing on Dynamic Stabilization in Subjects with Chronic Ankle Instability written by Brittany L. Taylor and published by . This book was released on 2008 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: Objective: The purpose of this study was to compare a lace-up ankle brace with a no-brace condition on the ability to return an athlete with CAI to a stable state by measuring the TTS following a jump-landing task. Design: Repeated measures within-subject design. Setting: Athletic Training Research Laboratory. Patients or Participants: Ten subjects, five males and five females (18.5625±.814yr; 174.0963±7.191cm; 69.2937±8.277kg) that fit the criteria for chronic ankle instability participated in this study. Measurements: Subjects participated in two separate testing sessions during which a jump-landing task was performed with one of two conditions: lace-up ankle brace or no ankle brace. The brace condition was randomized. During each session, five trials of a jump-landing task were performed on each leg. The jump-landing task consisted of a single-leg landing from a double-leg jump height equivalent to 50% of the subject's maximum jump height. Subjects jumped off of both feet from a distance 70cm away from the center of the force plate, reached up and touched the indicated marker, and landed on the force plate on a single test limb. The landing leg was randomized. Ground reaction forces were used to calculate TTS in the medial/lateral (MLTTS) and anterior/posterior (APTTS) directions. The independent variables were Condition (brace, no brace) and Side (injured, non-injured). A separate two-within (Condition, Side) repeated measures ANOVA was performed for APTTS and MLTTS. Main Outcome Measure(s): APTTS and MLTTS. Results: For APTTS, the Side by Condition interaction was not statistically significant (F1,9 = .004; p=.952). For MLTTS, the Side by Condition interaction was not statistically significant (F1,9 = .023; p= .884). No measurements were found to be statistically significant in either direction. Conclusion: This study was designed to show if the use of an ankle brace, like the Swede-O Universal would assist those subjects with CAI in reducing the amount of time it takes for them to stabilize after a jump landing task. Although the results of this study do not support these conclusions with statistical significance, it may provide an important direction in examining the connection between TTS, ankle bracing, and those with CAI. There is a definite need for further testing on more subjects with CAI so we can make a better conclusion about the use of the Swede-O Universal and its ability to reduce time to stabilization after a jump-landing task.

Book Altered Vertical Ground Reaction Forces Found in Participants with Chronic Ankle Instability During Running

Download or read book Altered Vertical Ground Reaction Forces Found in Participants with Chronic Ankle Instability During Running written by John Paul Bigouette and published by . This book was released on 2014 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Altered gait kinematics and kinetics have been examined in subjects with chronic ankle instability (CAI). Altered vertical ground reaction forces (GRF) have been found in individuals with CAI compared to control subjects, in different movement patterns but not running. Running is a common component of numerous sporting events where ankle sprains occur. The purpose of this investigation was to determine if subjects with CAI produced altered vertical GRF compared to uninjured subjects while running. Specifically, we examined if differences existed in impact peak forces, time to the impact peak force, active peak forces, time to the active peak force and average loading rate between groups. Twenty-four subjects with previous running experience were recruited from a Midwestern community. Subjects were determined to have CAI if they met the following criteria: (1) a history of at least one self-reported lateral ankle sprain that occurred 12 months prior to study enrollment, (2) a history of recurrent sprains or feelings of “giving way” during functional activity, (3) a score of 11 or higher on the Identification of Functional Ankle Instability (IdFAI) Questionnaire. Control subjects had no history of lateral ankle sprains. All subjects were required to be active runners and rear foot strikers ... Overall, results of the study found that individuals with subjects with CAI produce altered GRFs than uninjured subjects while running.

Book Biomechanics of Sport and Exercise

Download or read book Biomechanics of Sport and Exercise written by Peter Merton McGinnis and published by Human Kinetics. This book was released on 2005 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biomechanics of Sport and Exercise, Second Edition, introduces exercise and sport biomechanics in concise terms rather than focusing on complex math and physics. This book helps students learn to appreciate external forces and their effects, how the body generates forces to maintain position, and how forces create movement in physical activities.

Book Biomechanics of Sport and Exercise

Download or read book Biomechanics of Sport and Exercise written by Peter M. McGinnis and published by Human Kinetics. This book was released on 2020-01-10 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: A standout among introductory biomechanics texts, Biomechanics of Sport and Exercise, Fourth Edition With Web Resource, takes a unique approach to introducing exercise and sport biomechanics. Using simple terms, the book presents mechanics before functional anatomy, helping students first understand external forces and their effects on motion; then explores how the musculoskeletal system responds and generates its own internal forces to maintain position; and finally shows how to apply biomechanical principles to analyze movement and ultimately improve performance. The fourth edition expands its commitment to enabling students to discover the principles of biomechanics through observation. Easy-to-understand experiments are presented for students to try in the classroom or on their own. Sample problem sidebars guide students through choosing the appropriate equation to determine the forces acting or motion occurring in a specific scenario and then helps them solve the equation. This practical approach—combining clear illustrations, sample calculations, and encouragement for active learning—helps students develop a deeper understanding of the underlying mechanical concepts. In addition to careful updates throughout the book, other new enhancements in the fourth edition include the following: New content explores the technologies and devices available to coaches, athletes, and the general public to measure aspects of athletes’ movements. New full-color art and diagrams enhance the text and help students visualize mechanics in real-world scenarios. Explanations of the equations used in the text make the content more accessible to students. New concept application boxes provide deeper analysis of the field use of biomechanics, with topics such as the Magnus effect in baseball pitching, the wetsuit effect in triathlons, power output in cycling, centripetal acceleration when running a curve, and the work-energy principles in modern shot putting. Other learning aids include bold key terms, chapter objectives, and a guide to key equations and abbreviations. The chapters include a total of 18 sample problems that students can solve using a step-by-step process. A companion web resource offers additional review questions and problem sets. Biomechanics of Sport and Exercise, Fourth Edition, introduces the biomechanics of human movement in a clear and concise manner while promoting an active, engaged learning experience. Students will discover the principles of mechanics for themselves, resulting in a strong understanding of the subject matter.

Book The Effects of a Novel Orthotic Insole on Ground Reaction Forces and Ankle Mechanics

Download or read book The Effects of a Novel Orthotic Insole on Ground Reaction Forces and Ankle Mechanics written by Sarah Hildreth and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advancements in the footwear industry have led to new innovations in comfort and performance. For example, new insoles are designed to increase comfort and reduce peak ground reaction forces. The introduction of carbon fiber plated running shoes has also led to multiple record-breaking performances. However, advantages of shoes with multiple plates on injury risk and performance are unknown. Therefore, the purpose of this study was to analyze the effects of a novel orthotic insole (Kingetics, LLC, USA) consisting of two rigid plates on walking and running biomechanics. The effects of the dual-plate insoles were compared with an on-market carbon fiber running shoe and a shoe with no plates or cushioning. Ten healthy male participants performed ten treadmill trials with five shoe conditions (no insoles or cushioning, insoles with three increasing stiffness levels and a carbon fiber running shoe) at both their self-selected walking and running speeds. Peak ground reaction force (GRF), ankle moment, positive ankle power and metatarsal-phalangeal (MTP) joint angle were compared between the insoles and the carbon fiber shoe. Participants also rated the comfort of each shoe. The stiffest Kingetics dual-plate insoles were more effective than the carbon-plated shoe in reducing peak vertical GRFs during walking and posterior GRFs during walking and running. The insoles increased the ankle moment whereas the carbon fiber shoe decreased the ankle moment. However, both conditions decreased ankle power relative to a shoe without insoles or cushioning. There were no significant differences in MTP joint angle between any conditions. Overall, participants rated the carbon fiber shoe as more comfortable than the dual-plate insoles. These results highlight the effects of insoles with multiple rigid plates and how they compare to an on-market carbon fiber shoe and a shoe without insoles or cushioning, which can help inform the design of footwear aimed at reducing peak GRFs and ankle loading

Book Comparison of Methods Simulating the Ankle Sprain Mechanism

Download or read book Comparison of Methods Simulating the Ankle Sprain Mechanism written by Qingjian Chen and published by . This book was released on 2009 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of this study were to investigate the kinematics of two ankle brace testing protocols. They were drop landing on a slanted surface and the inversion drop test. Difference in kinematics and ground reaction forces of drop landing wearing an ankle brace on flat and lateral slant surfaces were also investigated. Eleven healthy subjects performed five trials in each of six dynamic movement conditions. They were an ankle inversion drop test on the inversion platform, drop landing from 0.45 m onto slant surface, and drop landing from 0.45 m onto flat surface with and without an ankle brace. A 7-camera motion analysis system was used to obtain the threedimensional kinematics. In addition, a force platform was used to measure the ground reaction forces (GRF) during drop landing. A 2 x 2 (brace x movement) repeated measures ANOVA was used to evaluate selected variables for inversion drop test and landing on slant surface (p

Book Foot and Ankle Biomechanics

Download or read book Foot and Ankle Biomechanics written by William Ledoux and published by Academic Press. This book was released on 2022-12-05 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: Foot and Ankle Biomechanics is a one source, comprehensive and modern reference regarding foot and ankle biomechanics. This text serves as both a master reference for foot biomechanics, presenting a clear state of the research and capabilities in the field. The customers for this book will be those looking for information on foot and ankle biomechanics for a range of applications; for example, designers of orthotics. Provides a comprehensive overview of the science of foot and ankle biomechanics that is presented in an easily accessible format Presents normative data and descriptions relating to the structure and function of the foot and ankle, along with comparisons to pathological conditions Includes multimedia content to support modeling and simulation chapters

Book The Identification and Treatment of Gait Problems in Cerebral Palsy

Download or read book The Identification and Treatment of Gait Problems in Cerebral Palsy written by James R. Gage and published by John Wiley & Sons. This book was released on 2009-09-21 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only book to deal specifically with the treatment of gait problems in cerebral palsy, this comprehensive, multi-disciplinary volume will be invaluable for all those working in the field of cerebral palsy and gait (neurologists, therapists, physiatrists, orthopaedic and neurosurgeons, and bioengineers). The book is divided into two parts. The first is designed to help the reader evaluate and understand a child with cerebral palsy. It deals with neurological control, musculoskeletal growth, and normal gait, as well as cerebral injury, growth deformities and gait pathology in children with cerebral palsy. The second section is a comprehensive overview of management. It emphasizes the most fundamental concept of treatment: manage the child's neurologic dysfunction first and then address the skeletal and muscular consequences of that dysfunction. The book has been thoroughly updated since the previous edition, with a greater focus on treatment and several entirely new topics covered, including chapters on the operative treatment of orthopaedic deformities. Video files are now available with all book purchases as a free digital download - contact [email protected] for more information.