Download or read book Electromyography of Lower Limb Muscles During the Ascent of Stairs with Different Pitch Angles and During Level Treadmill Walking written by Bryan E. Wilk and published by . This book was released on 2002 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Comparison of Oxygen Consumption RPE and Lower Limb EMG Activity in Toning Versus Running Shoes on Uphill Level and Downhill Walking written by Avneet Chatha and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: OBJECTIVES: Comparing electromyography and physiological measures while walking on various inclines in unstable and stable shoes.METHODS: Eleven healthy females walked on treadmill at +10%, 0% and -10% grade for five minutes each, at self-selected pace, in stable and unstable shoes. The two sessions were done 3weeks apart during which the subjects used unstable shoes for regular activities. Electromyography of lower limb muscles, absolute and relative oxygen consumption, perceived exertion rating and heart rate was calculated.RESULTS: Tibialis anterior activation varied significantly with shoe type, irrespective of grade. Soleus, vastus medialis, and biceps femoris showed activation differences in specific gait phases. There was a main effect for absolute and relative oxygen consumption, RPE and HR only with grade. Shoe type showed no effect. CONCLUSION: Though there is no difference in overall physiological variables, but changes in electromyography in specific phases highlight possible muscle toning benefits of unstable shoes.

Download or read book A Normative Movement Profile of Stair Ascent and Descent written by John Genereux and published by . This book was released on 2012 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt: INTRODUCTION: Ambulating up and down stairs is a common a functional task. Performing it efficiently is integral to a person's quality of life. Analysis of how one ascends and descends stairs may be more sensitive in identifying subtle functional differences not evident during level walking. These tasks place higher demand on balance, which necessitates increased muscular contribution, larger range of motion (ROM), forces, moments, and powers to transition the body to the next step. (3, 10, 19, 40) The relationship between EMG and force during dynamic activity however is non-linear and dependent upon numerous factors. (11) The force-length and force-velocity relationships must be considered, as well as force sharing and contraction dynamics that include angular velocity, distribution of mass and cross sectional area of the muscle. (11-13, 40) Recent efforts to derive an EMG-force model have been undertaken for clinical analysis although many parameters were not considered.^(11-13, 58) Using parameters limited to angle, angular velocity, physiological cross sectional area (PCA) and a rough estimation of equal force sharing between muscles provided a reasonable estimate of individual muscle moments. (11)METHODS: 9 subjects between the ages of 18 and 25 with a B.M.I. less than 25 kg/m2 with no history of orthopedic, neurological, or balance problems underwent gait analysis as they walked up and down instrumented stairs. Stair set-up was comprised of three steps, two of which had a height of 18 cm, tread depth of 28 cm, and a width of 60 cm and the third step as an extended platform. Kinematic and kinetic data were compared between level walking (force plate 1), transition from level walking to stair ascent and from stair descent to level walking (force plate 2), and stair walking for ascent and descent (force plates 3 and 4).^Independent t-tests (with appropriate correction for multiple comparisons) were used to assess differences between force plates (FP). Statistical significance was accepted at p

Download or read book Electrical Activity in Selected Lower Extremity Muscles During Level Walking Ascending and Descending Stairs written by Maureen A. Rager and published by . This book was released on 1980 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Treadmill Vs Nustep Recumbent Cross Trainer on Gait and Lower Extremity Electromyography After Chronic Stroke written by Nicholas Joseph Siekirk and published by . This book was released on 2018 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: EMG was measured bilaterally at 6 separate lower extremity muscles during five different stepping protocols (self-selected level 1 [SSL1], self-selected level 8 [SSL8], +20% self-selected [SS+20], -20% self-selected [SS-20], and 80 steps per min resistance level 1 [80SL1]). 22 healthy male and female adults (aged = 23.52 ± 4.23 years) signed an informed consent prior to the study. Self-selected cadence was established during 10 mins of stepping with a RPE between 12 and 16. Participants then performed all 5-min protocols in randomized order with 5 min of rest between each. Due to parametric violations, mean EMG (mEMG) and peak EMG (pEMG) were analyzed with non-parametric tests. A 1 x 4 Friedman test was conducted to determine statistical significant difference in mEMG and pEMG between min 2 and min 4 of stepping in each muscle. Following a statistically significant Friedman test (p

Download or read book The Effect of Treadmill Compliance and Foot Type on Electromyography of Selected Lower Extremity Muscles During Running written by Christine Kay Backmann and published by . This book was released on 1997 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The effect of treadmill compliance and foot type on electromyography of lower extremity muscles during running written by Christine Kay Backmann and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Electromyographic Study of the Effects of Lateral Asymetry on the Upper Leg Muscles Used in Normal Walking on a Treadmill written by S. Marie Landmesser and published by . This book was released on 1973 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ANATOMICAL GUIDE FOR THE ELECTROMYOGRAPHER written by Perotto, Aldo O. and published by Charles C Thomas Publisher. This book was released on 2011-08-01 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable book for the electromyographer dispenses the latest techniques detailing methods of intramuscular electrode placement. The author examines the basic principles in electromyography (EMG) and includes updated information for the appendicular and axial muscles. It is divided into 14 sections organized by anatomical region: the muscles of the hand, forearm, arm, shoulder girdle, foot, leg, thigh, pelvis, hip joint, perineal region, paraspinal region, abdominal wall, the intercostals and diaphragm regions, along with the muscles innervated by cranial nerves. This information includes the innervations and attachments of each muscle, how to position the patient for examination, the appropriate site for insertion of the electrode, the depth of insertion for the electrode, and the action that the patient should perform to activate the muscle. The descriptions of the techniques used for rarely examined muscles are sufficient for a clinician to have the confidence needed to perform the procedure. Common errors in electrode placement and clinically relevant comments are illustrated and discussed, including cross-sectional illustrations on the appendicular muscles. A particularly useful inclusion is “Pitfalls” that describes which muscle the electrode will record if the needle is placed too deep, not deep enough, or not at the location described. The text contains a useful appendix, providing dermatomes of the limb and trunk, cutaneous innervations of the head, and excellent illustrations of both the brachial plexus and the lumbo-sacral-coccygeal plexus. The appendix also contains a useful table listing all muscles that are presented in the text with innervations from the peripheral nerve to the mixed spinal nerve root. Well organized, clearly and concisely written, this book remains a learning tool and excellent reference for electromyographers and for healthcare practitioners who are expanding their practice skills to include diagnostic EMG, as well as for graduate students who use EMG as part of their research.

Download or read book EMG patterns of four lower limb muscles during a one foot static balance task written by Charles Shannon Layne and published by . This book was released on 1982 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applications of EMG in Clinical and Sports Medicine written by Catriona Steele and published by IntechOpen. This book was released on 2012-01-11 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second of two volumes on EMG (Electromyography) covers a wide range of clinical applications, as a complement to the methods discussed in volume 1. Topics range from gait and vibration analysis, through posture and falls prevention, to biofeedback in the treatment of neurologic swallowing impairment. The volume includes sections on back care, sports and performance medicine, gynecology/urology and orofacial function. Authors describe the procedures for their experimental studies with detailed and clear illustrations and references to the literature. The limitations of SEMG measures and methods for careful analysis are discussed. This broad compilation of articles discussing the use of EMG in both clinical and research applications demonstrates the utility of the method as a tool in a wide variety of disciplines and clinical fields.

Download or read book Leg Muscle Activation Patterns During Sit to stand on Various Compliance Surfaces written by Vadim Zaika and published by . This book was released on 2012 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this thesis was to analyze EMG activity patterns during sit-to-stand (STS) movement on various compliance surfaces. The main hypothesis was to investigate if there were any differences in lower limb muscle activation patterns on various compliance surfaces during sit-to-stand tasks. A secondary hypothesis was to look if there were any significant bilateral differences in muscle activation between left and right legs on various compliance surfaces. Research was conducted at a biomechanical lab at California State University, Northridge (CSUN). Supporting surface stiffness was modified with four eight-way adjustable-stiffness shock absorbers mounted between two force plates. A custom built platform was also used in this experiment. Seventeen CSUN student volunteers were recruited randomly by a pool of volunteers. Each participant performed a self-paced STS under eight surface stiffness conditions in randomized order. The mean EMG values of ten muscles during STS on various compliance surfaces were analyzed and compared according to eight distinct phases of force profile. There were no statistically significant differences found in mean EMG of the muscles examined under different supporting surface stiffness conditions. Right and left leg muscle activities were highly correlated in all phases and not significantly different. It was found that muscle activation patterns during sit-to-stand do not significantly change with variations of the surface compliance, suggesting that a sit-to-stand movement skill is preprogramed in a consistent way under all conditions. Regardless of the surface compliance left and right leg muscles were highly synchronized showing strong synergies. This study suggests that there were no neuromuscular adaptations to difference compliance surfaces in STS, but it is suggested to investigate whether long adaptation periods on a softer compliance surface environment will create any different results.

Download or read book Walking Mode Classification Through Myoelectric and Inertial Sensors for Transtibial Amputees written by Jason D. Miller and published by . This book was released on 2012 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Myoelectric algorithms have the potential to provide motion intent information to a prosthetic system to allow the prosthetic to adapt biomimetically to changes in walking modality. While myoelectric algorithms have been explored extensively for upper limb amputees, little has been done to achieve similar advances for the lower limb. For upper limb amputees, it has been shown that fusion of myoelectric and inertial sensors benefits classification. Myoelectric signals from four muscle groups (tibialis anterior, medial gastrocnemius, vastus lateralis, and biceps femoris) and inertial signals from the lower limb segments were recorded for five non-amputee subjects and five transtibial amputees over a variety of walking modes: level ground walking at various speeds, ramp ascent/descent, and stair ascent/descent. These signals were decomposed into relevant features (mean absolute value, variance, wavelength, number of slope sign changes, and number of zero crossings, maximum, minimum) and used to test the ability of myoelectric classification algorithms for transtibial amputees using either Linear Discriminant Analysis (LDA) or Support Vector Machine (SVM) classifiers. The fusion of myoelectric and inertial signals showed no benefit for amputee subjects and as a result inertial signals were removed from consideration. Detection of all seven walking modes were observed to have an accuracy of 97.9% (± 0.22) and 97.9% (± 1.39) for amputee subjects when using LDA and SVM, respectively. The predominant misclassifications occurred between different walking speeds due to the similar nature of the gait pattern. Stair ascent/descent modalities had the best classification accuracy with 100% (± 0.00) and 99.8% (± 0.29) for amputee subjects when using LDA and SVM, respectively. Transitions into and out of stair modalities could be predicted one gait cycle ahead of the change for 95.0% and 90.0% of all transitions observed in this study when using LDA and SVM, respectively. The robustness of the developed classifier was explored through tests of generalizability and stability under electrode shifting disturbance. While separations between certain modes were not possible through a generalized model or under disturbance, stair ascent/descent classification against all other modalities was consistent. This result highlights the possibility of a stair mode myoelectric control algorithm for lower limb amputees. Future efforts will further explore the robusticity of myoelectric classification under real world conditions such as stability of classification over long periods of time, classifier training methods, and real time capabilities of the classifier.

Download or read book The Investigation of EMG Signal for Lower Limb Movement During Solah muslim Prayer written by Hazwani Harun and published by . This book was released on 2017 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scopes of the study include to statistically verify the EMG signal data from the different positions and postures of lower limb muscles during performing solah. The results would quantitatively clarify the differences of different postures and anatomical positions of the lower limb muscles during performing solah; this study involved 20 healthy subjects with the range of age from 18 to 40 years old (Appendix D) which involve the most functional muscles of the lower limbs during the respective chosen postures which are Gastrocnemius and Tibialis Anterior muscles; to postures include pertaining to sujud, sujud and sitting in solah; to data of the recorded EMG signal data would be analyzed and discussed using Paired Sample T-Test from SPSS version 16.0.

Download or read book Anatomical Guide for the Electromyographer written by Aldo Perotto and published by Charles C Thomas Pub Limited. This book was released on 2011 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: This invaluable book for the electromyographer dispenses the latest techniques detailing methods of intramuscular electrode placement. The author examines the basic principles in electromyography (EMG) and includes updated information for the appendicular and axial muscles. It is divided into 14 sections organized by anatomical region: the muscles of the hand, forearm, arm, shoulder girdle, foot, leg, thigh, pelvis, hip joint, perineal region, paraspinal region, abdominal wall, the intercostals and diaphragm regions, along with the muscles innervated by cranial nerves. This information includes the innervations and attachments of each muscle, how to position the patient for examination, the appropriate site for insertion of the electrode, the depth of insertion for the electrode, and the action that the patient should perform to activate the muscle. The descriptions of the techniques used for rarely examined muscles are sufficient for a clinician to have the confidence needed to perform the procedure. Common errors in electrode placement and clinically relevant comments are illustrated and discussed, including cross-sectional illustrations on the appendicular muscles. A particularly useful inclusion is "Pitfalls" that describes which muscle the electrode will record if the needle is placed too deep, not deep enough, or not at the location described. The text contains a useful appendix, providing dermatomes of the limb and trunk, cutaneous innervations of the head, and excellent illustrations of both the brachial plexus and the lumbo-sacral-coccygeal plexus. The appendix also contains a useful table listing all muscles that are presented in the text with innervations from the peripheral nerve to the mixed spinal nerve root. Well organized, clearly and concisely written, this book remains a learning tool and excellent reference for electromyographers and for healthcare practitioners who are expanding their practice skills to include diagn

Download or read book Winter s Biomechanics and Motor Control of Human Movement written by Stephen J. Thomas and published by John Wiley & Sons. This book was released on 2022-11-08 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: An In-Depth Resource for Understanding the Foundational Concepts and Clinical Applications in the Field of Biomechanics Winter’s Biomechanics and Motor Control of Human Movement is highly suitable as a textbook for today’s biomechanics students who may come from many diverse academic programs and professional sectors. The work covers foundational theoretical and mathematical concepts in biomechanics, as well as up-to-date data collection, interpretation, and storage techniques. It also highlights the contemporary clinical applications of biomechanical research. New case studies related to cerebral palsy, patellar femoral pain syndrome, knee osteoarthritis, and ulnar collateral ligament reconstruction are also included. The work appeals to a broad audience within the field of biomechanics, an interdisciplinary field with applications in mechanical engineering, medicine, physical therapy, sports and exercise, and product development. Authors at leading universities guide the reader through the latest advancements in the field while also imparting critical foundational knowledge to allow for subject matter mastery and more precise practical application. Concepts covered in the book include: Biomechanical signal processing, anthropometry, kinematics and kinetics, muscle mechanics, and kinesiological electromyography Forward simulations and muscle-actuated simulations, static and dynamic balance, and the role of the central nervous system in biomechanics Movement sequencing and the kinetic chain concept, electromagnetic systems, inertial sensors, clinical measures of kinematics, and the advantages and disadvantages of different types of force plates Markerset design and event detection for gait and athletic motions like jumping, landing, and pitching Guidance on setting up a motion lab and access to online Excel spreadsheets with kinematic and kinetic marker data By providing a combination of theoretical and practical knowledge, Winter’s Biomechanics and Motor Control of Human Movement will appeal to biomedical engineers working in the field of biomechanics and allied professionals in the medical, rehabilitation, and sports industries. Its comprehensive overall insight into the field of biomechanics also makes the work a highly useful resource for students and teachers of biomechanics at all levels of experience and expertise.

Download or read book Applications of EMG in Clinical and Sports Medicine written by Catriona Steele and published by BoD – Books on Demand. This book was released on 2012-01-11 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This second of two volumes on EMG (Electromyography) covers a wide range of clinical applications, as a complement to the methods discussed in volume 1. Topics range from gait and vibration analysis, through posture and falls prevention, to biofeedback in the treatment of neurologic swallowing impairment. The volume includes sections on back care, sports and performance medicine, gynecology/urology and orofacial function. Authors describe the procedures for their experimental studies with detailed and clear illustrations and references to the literature. The limitations of SEMG measures and methods for careful analysis are discussed. This broad compilation of articles discussing the use of EMG in both clinical and research applications demonstrates the utility of the method as a tool in a wide variety of disciplines and clinical fields.