Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 34 for “"surface EMG"”.
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A denoising algorithm for surface EMG decomposition
… ratio, VR) of the MUP ensemble. Decomposed sEMG data from 20 participants at 60% MVC of wrist flexion was used. There were two levels of denoising (relaxed and strict) criteria for removing discharge times associated with waveforms that did not decrease the VR and increase its signal-to-noise …
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Exploring the potential of a model-based approach to detect muscular dysfunction using surface EMG
… is for sure being activated through exercises? Surface electromyography is one of the options that can be used during the diagnostic and treatment process since the system gives feedback on muscles' performance. This study is about the use of a surface electromyography system to visualize muscle …
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Endurance of Lower Paraspinals and Gluteal Muscles Using Surface EMG on Healthy Subjects During Performance of Common Lumbar Stabilization Exercises
… paraspinals and left and right gluteal muscles. Surface EMG was used to measure fatigue via a median frequency shift of the power spectrum to the low end of the frequency continuum and an increase in EMG activity in the same area of the spectrum. Fatigue would have taken place when EMG activity …
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Development and application of a protocol for fine-wire and surface EMG Data collection as part of clinical gait assessment
Background: Electromyography (EMG) is a measure of neural activation to muscles and as such can give a window into neuromuscular dysfunction in patients. Although it was the primary focus of early clinical gait analysis (CGA), it has become progressively less common since the widespread adoption of …
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Evaluace volejbalového podání ze země a z výskoku s následným porovnáním při simulaci podání při stahování kladky pomocí povrchové elektromyografie
… Evaluation of volleyball service due to surface EMG. Objectives of dissertation: To measure and describe the structure involving specific muscles of the player. The muscles are going to be measured during the volleyball service - service with jump, service without jumping and specific …
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The surface electromyography-force relationship during isometric dorsiflexion in males and females
… differences in the tibialis anterior (TA) surface electromyography (EMG) to force relationship. One-hundred participants (50 males and 50 females) performed three isometric contractions at 20, 40, 60, 80, and 100% of maximal voluntary contraction (MVC) in an apparatus designed to isolate …
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Hand Pattern Recognition Using Smart Band
… This thesis also shows that by taking both EMG and accelerometer data into account, can improve the system to recognize more patterns with higher accuracy levels. For this, a hand band embedded with a triple axis accelerometer and three surface EMG electrodes is employed to source the …
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Surface electromyography of facilitated versus free arm activation after stroke
… An experiment was designed in which surface EMG was recorded from the biceps brachii and triceps brachii of seven acute stroke patients, during three types of activities. Recordings are made during unassisted attempts at flexion and extension, weight bearing attempts through the arm, …
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Immediate Effect of Complete Denture Occlusal Errors on Masticatory Muscle EMG Activity in Denture Wearers: A Pilot Study
… Subjects were asked to clench maximally and the surface EMG of the right and the left masseter and the temporalis muscles were recorded. Bilateral interferences were removed and the subjects were divided into two groups. Group A received unilateral right interference and group B received …
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Critical analysis of techniques for normalising electromyographic data : from laboratory to clinical research
Measurements of muscle activity derived from surface EMG electrodes are variable due to both intrinsic and extrinsic factors. The intrinsic factors are endogenous in nature (features within the body) and include muscle fiber type, muscle fiber diameter and length, the amount of tissue between …
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Neuromotor Mechanisms Involved in the Recovery from Local Muscular Fatigue
… minute recovery period. Dorsiflexion force and surface electromyography (sEMG) from the tibialis anterior and soleus were monitored concurrently. Following the two fatigue conditions (10 and 20% force decrement) force recovered to 100.5 and 99.5% of initial levels for each condition, …
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The effects of the powercam crank system on physiological and perceptual indicators of efficiency in humans during endurance cycling
… mode. Measurements that included HR, BP, VO₂, surface EMG, and RPE were monitored at 15 minute intervals during both tests. Responses were very similar across modes and between subjects. Although subjects demonstrated responses that may indicate an improved efficiency for a particular mode, the …
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Muscle force estimation in clinical gait analysis
… muscle forces. To date, joint moments and EMG measurements are used to deduce on the characteristics of muscle forces, however, known limitations restrain a satisfying analysis of muscle force production. Recent developed musculoskeletal models make it possible to estimate individual muscle …
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Get a grip: Analysis of muscle activity and perceived comfort in using stylus grips
… for touch screens and computer based writing surfaces. Hence, this study focuses primarily on evaluating grip style’s impact on user comfort and muscle activity associated with handgrip while using a stylus-pen. Surface EMG measures were taken approximate to the adductor pollicis, flexor …
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Clarinet Thumb-rest Function: The Pedagogy of Positioning and Electromyography Evidence
… data and analysis from an electromyography &40;EMG%41; study of 20 healthy student and professional clarinet players. It discusses current approaches to supporting the instrument with after-market products and modifications to the instruments and addresses the implications for the pedagogy of …
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Effect of Palm Temperature on Fatigue During High Intensity Bench Press Exercise
… PH (2156±668) sets, (p <0.01). The RMS of the surface EMG with PC exercise was higher (p <0.01), and heart rate and RPE were lower (p <0.01 and p <0.05, respectively) during PC compared to TN and PH. CONCLUSION: Palm cooling was associated with increased exercise repetitions and exercise …
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Acute effects of dynamic stretching on flexibility and agonist-antagonist muscle activity
… ADS on AROM and agonist-antagonist mean and peak EMG. The ADS protocol involved three sets of ten repetitions of leg kicks while in the supine position with the pelvis and contralateral limb fixed in extension. Participants moved the leg at the hip in a kicking motion to a point of mild discomfort …
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Inhibitory effect of subthreshold transcranial magnetic stimulation on the stretch-evoked long latency response of forearm muscles
… intensity and arrival time relative to the EMG activity period. However, previous studies reported inconsistent findings of the effects of TMS on LLRa, reporting inconsistent inhibitory and excitatory LLR modulation. As such, the primary objective of this work was to develop a synchronized …
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EMG-Based Human-in-the-Loop Bayesian Optimization to Assist Hip-Centric Activities
… personalizing hip exoskeleton assistance using surface EMG-based human-in-the-loop optimization, cutting tuning time from hours to minutes while preserving assistance quality. We show that processed EMG provides a reliable objective for rapid personalization, enabling convergence within typical …
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Evaluation of Global Muscle Innervation Using Multi-Channel Surface Electromyography
Introduction: Advances in multi-channel surface electromyography (sEMG) have enabled the non-invasive assessment of neuromuscular function at the muscle and motor unit level. Specifically, sEMG has been used to assess the location of innervation zones (IZs) and the quantity of functioning …
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