Download or read book Recovery Rate Parameters from Isometric and Isontonic Muscular Fatigue written by Roy Davis and published by . This book was released on 1963 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Muscle Fatigue and Recovery Across the Lifespan in Adults who are Healthy and Critically Ill written by Julie Marie Skrzat and published by . This book was released on 2017 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Muscle performance, particularly muscle fatigue and muscle recovery, impact an individual's function and participation in activities of life. Most notably, older adults with medical co-morbidities experience impaired muscle performance from the natural aging process, cumulative effects of a sedentary lifestyle, or imposed bedrest, contributing to a significant reduction in health and quality of life.1 Exercise, particularly muscle strength, endurance, and power training, is considered "medicine" and often prescribed to improve the health and well-being of older adults, as well as younger adults.2 An appropriate exercise prescription requires knowledge of muscle fatigue and recovery in order to optimize the exercise program without preventing further muscle damage. Muscle fatigue and recovery have been characterized using frequency analyses of surface electromyography (sEMG) during muscle activation.3 Surface EMG measures electrical activity of a muscle, providing insight into muscle activation patterns.4 Conveniently, the sensors for sEMG are noninvasive, wireless, and compact, allowing capture of movement in a multitude of environments with minimal impact on typical movement patterns. By using sEMG to assess patterns during and after sustained isometric and dynamic knee extension, we hoped to determine baseline muscle fatigue and recovery patterns in subjects with no physical limitations for comparison with adults who are critically ill. The primary objective of this study is to improve our understanding of muscle fatigue and recovery in adults who are critically ill using sEMG technology and experimental procedures to be used in an intensive care unit (ICU) environment. We proposed to study muscle fatigue and recovery using sEMG through muscle activation analysis. The specific aims were to 1) measure time to task failure (TTTF) after a sub-maximal isometric contraction and dynamic contraction in adults who were healthy younger (HY), adults who were healthy older (HO) adults, and adults who were critically ill (CI); 2) measure time to muscle recovery after a sub-maximal isometric contraction and dynamic contraction in HY, HO, and CI; and 3) characterize a relationship between TTTF and time to recovery. Our hypotheses were that 1) CI would demonstrate a shorter TTTF than healthy subjects during an isometric contraction and dynamic contraction; 2) HY would demonstrate a shorter time to recovery, followed by HO, then CI after both an isometric contraction and dynamic contractions; and 3) there was no relationship between TTTF and time to recovery within group. Muscle fatigue and recovery were measured in the rectus femoris and vastus lateralis using sEMG. During a single 90 minute session, subjects participated in a 3 phase protocol: baseline strength measures, fatiguing contraction, and recovery contractions. The fatiguing contraction and subsequent recovery measures were performed twice - under isometric and dynamic conditions. Recovery measures were taken at termination (analysis point C), 1 minute (analysis point D), and ≥ 5 minutes (analysis point E). Sub-maximal indicated that the individual decided how long to keep their knee extended and stopped the contraction on their own at any time. Time to task failure and time to recovery amongst all 3 groups (HY, HO, and CI) were the basis for analysis of the dependent variables of sEMG - time (seconds) and median frequency (Fmed). After the isometric contraction, CI fatigued first, followed by HY, then HO. There was a statistically significant difference among TTTF and group (chi-squared with two degrees of freedom, p = 0.03). A Wilxocon rank sum test showed statistically significant differences between HY and HO (p = 0.03) and HO and CI (p = 0.02), but no statistically significant difference between HY and CI (p = 0.45). After the dynamic contraction, CI fatigued first, followed by HO, then HY. There was a statistically significant difference among TTTF and group (chi-squared with two degrees of freedom, p = 0.04). A Wilxocon rank sum test showed statistically significant difference between HY and CI (p = 0.02) and HO and CI (p = 0.02), but no statistically significant difference between HY and HO (p = 0.73). Chi-squared analysis between time to recovery and age group for both an isometric and dynamic contractions was performed. There was not a statistically significant difference for time to recovery between groups. After the isometric contraction, for the rectus femoris, all groups had a high percentage of subjects finish at analysis point E, with HY and HO having the same percentage recover at analysis point C and D, respectively. For the vastus lateralis, among the three groups, the HY had the highest percentage recovered at analysis point C. However, the largest percentage of HY subjects recovered at analysis point E. The HO and CI had the same percentage of subjects within group recover at analysis point D and E. After a dynamic contraction, for the rectus femoris, the highest percentage of HY and HO recovered at analysis point C, and CI at analysis point E. For the vastus lateralis, all groups had the highest percentage of subjects recover at analysis point C, with the HO and CI having all subjects recover before analysis point E. Our third hypothesis was that there was no relationship between TTTF and time to recovery within group. For an isometric contraction, the HY's rectus femoris and vastus lateralis demonstrated a very weak - weak, positive correlation between TTTF and time to recovery. For a dynamic contraction, all, with the exception of HO's vastus lateralis and CI's rectus femoris, showed no association. HO's vastus lateralis showed a weak, positive correlation, while the CI's rectus femoris showed a moderate, negative correlation. None were statistically significant. This was the first study, to our knowledge, that studied muscle fatigue and muscle recovery using sEMG in patients with critical illness. From a study design perspective, the use of sEMG using Bluetooth technology was safe and feasible in the ICU setting. No adverse effects and excessive soreness were reported in CI. From a clinical perspective, despite a small sample size, CI showed comparable time to task failure and recovery time frames to HY and HO, indicating that perhaps patients do not need extensive five to ten minute rest breaks as commonly provided. Consideration to applied weight, as well as muscle fatigue and muscle recovery, should be given when designing an exercise program to appropriately tax the vulnerable muscle, while still preventing further muscle damage. Future research warrant a larger, more homogenous group of subjects, including similar diagnosis, severity of illness, and supplemental oxygenation. Secondly, efforts should be made to conduct testing in the ICU around comparable days to their length of stay. Thirdly, ideal testing should be performed prior to initiation of early mobility to capture a more authentic representation of muscle fatigue and recovery, resulting from ICUAW. All three modifications would assist in making results more generalizable. In addition, follow up sEMG analysis should be conducted to assess the effect of therapeutic interventions on muscle strength, fatigue, and recovery. Consideration must also be given to medical management, including sedatives and paralytics, as well as pH, which if in a more acidotic state, has greater hydrogen ions, which could influence fatigue. Lastly, being that sepsis is a primary admitting diagnosis and these individuals may present with muscle weakness that is not necessarily ICUAW, efforts should be made to assess if there is a difference in sEMG signals between muscle wasting from sepsis and ICUAW.

Download or read book Surface Electromyography written by Roberto Merletti and published by John Wiley & Sons. This book was released on 2016-05-02 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reflects on developments in noninvasive electromyography, and includes advances and applications in signal detection, processing and interpretation Addresses EMG imaging technology together with the issue of decomposition of surface EMG Includes advanced single and multi-channel techniques for information extraction from surface EMG signals Presents the analysis and information extraction of surface EMG at various scales, from motor units to the concept of muscle synergies.

Download or read book Therapeutic Exercise for Musculoskeletal Injuries written by Peggy A. Houglum and published by Human Kinetics. This book was released on 2018-10-30 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Therapeutic Exercise for Musculoskeletal Injuries, Fourth Edition With Online Video, presents foundational information that instills a thorough understanding of rehabilitative techniques. Updated with the latest in contemporary science and peer-reviewed data, this edition prepares upper-undergraduate and graduate students for everyday practice while serving as a referential cornerstone for experienced rehabilitation clinicians. The text details what is happening in the body, why certain techniques are advantageous, and when certain treatments should be used across rehabilitative time lines. Accompanying online video demonstrates some of the more difficult or unique techniques and can be used in the classroom or in everyday practice. The content featured in Therapeutic Exercise for Musculoskeletal Injuries aligns with the Board of Certification’s (BOC) accreditation standards and prepares students for the BOC Athletic Trainers’ exam. Author and respected clinician Peggy A. Houglum incorporates more than 40 years of experience in the field to offer evidence-based perspectives, updated theories, and real-world applications. The fourth edition of Therapeutic Exercise for Musculoskeletal Injuries has been streamlined and restructured for a cleaner presentation of content and easier navigation. Additional updates to this edition include the following: • An emphasis on evidence-based practice encourages the use of current scientific research in treating specific injuries. • Full-color content with updated art provides students with a clearer understanding of complex anatomical and physiological concepts. • 40 video clips highlight therapeutic techniques to enhance comprehension of difficult or unique concepts. • Clinical tips illustrate key points in each chapter to reinforce knowledge retention and allow for quick reference. The unparalleled information throughout Therapeutic Exercise for Musculoskeletal Injuries, Fourth Edition, has been thoroughly updated to reflect contemporary science and the latest research. Part I includes basic concepts to help readers identify and understand common health questions in examination, assessment, mechanics, rehabilitation, and healing. Part II explores exercise parameters and techniques, including range of motion and flexibility, proprioception, muscle strength and endurance, plyometrics, and development. Part III outlines general therapeutic exercise applications such as posture, ambulation, manual therapy, therapeutic exercise equipment, and body considerations. Part IV synthesizes the information from the previous segments and describes how to create a rehabilitation program, highlighting special considerations and applications for specific body regions. Featuring more than 830 color photos and more than 330 illustrations, the text clarifies complicated concepts for future and practicing rehabilitation clinicians. Case studies throughout part IV emphasize practical applications and scenarios to give context to challenging concepts. Most chapters also contain Evidence in Rehabilitation sidebars that focus on current peer-reviewed research in the field and include applied uses for evidence-based practice. Additional learning aids have been updated to help readers absorb and apply new content; these include chapter objectives, lab activities, key points, key terms, critical thinking questions, and references. Instructor ancillaries, including a presentation package plus image bank, instructor guide, and test package, will be accessible online. Therapeutic Exercise for Musculoskeletal Injuries, Fourth Edition, equips readers with comprehensive material to prepare for and support real-world applications and clinical practice. Readers will know what to expect when treating clients, how to apply evidence-based knowledge, and how to develop custom individual programs.

Download or read book Individual Differences in Hand grip Endurance as a Function of Initial Strength and Performance Profile written by Robert Picone and published by . This book was released on 1973 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Rehabilitation R D written by and published by . This book was released on 2004 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of Rehabilitation Research and Development written by and published by . This book was released on 1991 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biomechanics and Neural Control of Posture and Movement written by Jack M. Winters and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most routine motor tasks are complex, involving load transmission through out the body, intricate balance, and eye-head-shoulder-hand-torso-leg coor dination. The quest toward understanding how we perform such tasks with skill and grace, often in the presence of unpredictable perturbations, has a long history. This book arose from the Ninth Engineering Foundation Con ference on Biomechanics and Neural Control of Movement, held in Deer Creek, Ohio, in June 1996. This unique conference, which has met every 2 to 4 years since the late 1960s, is well known for its informal format that promotes high-level, up-to-date discussions on the key issues in the field. The intent is to capture the high quality ofthe knowledge and discourse that is an integral part of this conference series. The book is organized into ten sections. Section I provides a brief intro duction to the terminology and conceptual foundations of the field of move ment science; it is intended primarily for students. All but two of the re maining nine sections share a common format: (l) a designated section editor; (2) an introductory didactic chapter, solicited from recognized lead ers; and (3) three to six state-of-the-art perspective chapters. Some per spective chapters are followed by commentaries by selected experts that provide balance and insight. Section VI is the largest section, and it con sists of nine perspective chapters without commentaries.

Download or read book Rehabilitation of Musculoskeletal Injuries written by Peggy A. Houglum and published by Human Kinetics. This book was released on 2022-10-24 with total page 1178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rehabilitation of Musculoskeletal Injuries, Fifth Edition With HKPropel Online Video, presents foundational concepts that support a thorough understanding of therapeutic interventions and rehabilitative techniques. Updated with the latest research in evidence-based practice, this text prepares students for careers in health care while serving as a valuable reference for experienced clinicians. Readers will learn what to expect when treating clients, how to apply evidence-based knowledge, and how to customize individual rehab programs. Related online video demonstrates 47 of the most challenging or novel techniques and can be used in the classroom or in everyday practice. Titled Therapeutic Exercise for Musculoskeletal Injuries in previous editions, the revised title supports the advancement of the field and better reflects the concepts and understanding of total rehabilitation of the patient. The content featured in Rehabilitation of Musculoskeletal Injuries aligns with the accreditation standards of the Board of Certification (BOC) and prepares students for the BOC athletic trainers’ exam. Respected clinician Peggy A. Houglum, who has more than 50 years of experience in the field, leads the expert author team to provide evidence-based perspectives, updated theories, and real-world applications. The latest edition is enhanced with contributions from new authors Daniel E. Houglum and Kristine L. Boyle-Walker, who have over 54 combined years of experience as athletic trainers, physical therapists, and instructors. The fifth edition of Rehabilitation of Musculoskeletal Injuries places a greater emphasis on higher-order skills. Although it continues to present therapeutic exercise interventions, added content includes the other aspects of rehabilitation that would be applied to patients in clinical situations, including therapeutic interventions of modalities. Specific aspects of examination that are necessary to designing a rehabilitation program are also included. This edition also includes a new section on joint manipulation and a new chapter on functional adaptations in rehabilitation that focuses on providing emotional support as well as physical support in helping patients return to activities of daily living. Video content is expanded with 11 new clips that highlight therapeutic techniques, and more than 450 color photos and 750 illustrations help to enhance comprehension and clarify complicated concepts. Rehabilitation of Musculoskeletal Injuries, Fifth Edition, provides thorough coverage of healing concepts, examination, and assessment techniques, ensuring students move from a solid understanding of the foundational skills and knowledge required of clinicians to comprehension of advanced problem-solving skills to make reliable rehabilitation decisions. The text demonstrates how to create rehabilitation programs using various modalities, manual therapy, and therapeutic exercise, and it highlights special considerations and applications for specific body regions. Learning aids include case studies that emphasize practical application, Evidence in Rehabilitation sidebars that focus on peer-reviewed research and its practical application, and Clinical Tips that illustrate key points in each chapter. Additional learning aids include chapter objectives, lab activities, key terms, critical thinking questions, and references. For maximum flexibility to match course needs, instructors wanting to teach specific topics can adopt particular chapters or sections of the book through the Human Kinetics custom ebook program. Note: A code for accessing online videos is not included with this ebook but may be purchased separately.

Download or read book Therapeutic Exercise written by Frances E. Huber and published by W B Saunders Company. This book was released on 2006 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to the increasing need for progressing a treatment plan, this text shows the reader how to prescribe therapeutic exercise based on the best evidence and clinical experience. It teaches therapists how to make informed clinical decisions about the best way to progress treatment for their clients that integrates balance, strength, endurance and all of the areas necessary for optimal function. It also provides the underlying theories of treatment planning, using APTA's Guide to Physical Therapist Practice, 2nd Edition as the basis for practice. Three on-going client cases are woven throughout the text, promoting clinical reasoning skills and providing a framework to construct new knowledge. Learning objectives at the start of each chapter help readers focus their attention on important principles and concepts. "Stop and Think" questions mixed throughout the chapters show students how to reflect on new information and how it may be applied in a variety of situations. Client vignettes in each chapter illustrate the importance of learning the concepts for transfer to new situations. Concept maps illustrate how the chapter is organized and how elements fit together to provide a framework for constructing knowledge. A focus on the disablement model allows students to apply therapeutic exercise for maximum functionality as defined by the APTA. A focus on research demonstrates the best way to prescribe exercise by focusing on best practice. A companion DVD provides 60 minutes of video clips that gives students the ability to observe an activity, critique the technique, compare and contrast movement in a wide range of ages, select the appropriate exercise for the job and many other applications.

Download or read book Physical Fitness sports Medicine written by and published by . This book was released on 1980 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: Consists of citations selected from those contained in the National Library of Medicine's Medical Literature Analysis and Retrieval System.

Download or read book Research Quarterly written by and published by . This book was released on 1978 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Occupational Biomechanics written by Don B. Chaffin and published by John Wiley & Sons. This book was released on 2006-05-05 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Praise for previous editions of Occupational Biomechanics "This book is a valuable resource for any advanced ergonomist interested in physical ergonomics . . . provides valuable research information." -Ergonomics in Design "[This book] represents a distillation of the authors' combined years of experience in applying biomechanicsin various industries and work situations . . . I recommend this book to anyone, regardless of discipline, who is interested in understanding the many biomechanical factors which must be considered when trying to effectthe prevention and reduction of musculoskeletal injuries in the workplace." -Journal of Biomechanics "Impressive descriptions of biomechanical concepts and worksite considerations . . . based not only on mechanical and mathematical principles, but on solid anatomical and physiologic constructs . . . a very valuablereference source." -Research Communications in Chemical Pathology and Pharmacology THE DEFINITIVE TEXT ON DESIGNING FOR THE DEMANDS OF TODAY'S WORKPLACE With critical applications in manufacturing, transportation, defense, security, environmental safety and occupational health, and other industries, the field of occupational biomechanics is more central to industrial design than ever before. This latest edition of the popular and widely adopted Occupational Biomechanics provides the foundations and tools to assemble and evaluate biomechanical processes as they apply to today's changing industries, with emphasis on improving overall work efficiency and preventing work-related injuries. The book expertly weaves engineering and medical information from diverse sources and provides a coherent treatment of the biomechanical principles underlying the well-designed and ergonomically sound workplace. NEW TO THIS THOROUGHLY REVISED AND UPDATED FOURTH EDITION: * 150 new references and many new illustrations * Major changes within each chapter that reflect recent and significant findings * Recent research in musculoskeletal disorders * New measurement techniques for biomechanical parameters and numerous international initiatives on the subject Presented in an easy-to-understand manner and supported by over 200 illustrations and numerous examples, Occupational Biomechanics, Fourth Edition remains the premier one-stop reference for students and professionals in the areas of industrial engineering, product and process design, medicine, and occupational health and safety.

Download or read book Muscle Physiology written by Francis D. Carlson and published by Prentice Hall. This book was released on 1974 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monitoring Metabolic Status written by Institute of Medicine and published by National Academies Press. This book was released on 2004-08-29 with total page 469 pages. Available in PDF, EPUB and Kindle. Book excerpt: The U.S. military's concerns about the individual combat service member's ability to avoid performance degradation, in conjunction with the need to maintain both mental and physical capabilities in highly stressful situations, have led to and interest in developing methods by which commanders can monitor the status of the combat service members in the field. This report examines appropriate biological markers, monitoring technologies currently available and in need of development, and appropriate algorithms to interpret the data obtained in order to provide information for command decisions relative to the physiological "readiness" of each combat service member. More specifically, this report also provides responses to questions posed by the military relative to monitoring the metabolic regulation during prolonged, exhaustive efforts, where nutrition/hydration and repair mechanisms may be mismatched to intakes and rest, or where specific metabolic derangements are present.

Download or read book The Research Quarterly of the American Association for Health Physical Education and Recreation written by and published by . This book was released on 1962 with total page 1230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Therapeutic Exercise written by Carolyn Kisner and published by F.A. Davis. This book was released on 2022-10-17 with total page 3368 pages. Available in PDF, EPUB and Kindle. Book excerpt: The premier text for therapeutic exercise Here is all the guidance you need to customize interventions for individuals with movement dysfunction. You’ll find the perfect balance of theory and clinical technique—in-depth discussions of the principles of therapeutic exercise and manual therapy and the most up-to-date exercise and management guidelines.