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Artigos de revistas sobre o tema "Electromygraphy"

Autor: Grafiati
Publicado: 8 de fevereiro de 2025

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Veja os 15 melhores artigos de revistas para estudos sobre o assunto "Electromygraphy".

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1

Luciano, C. A. "Principles of Clinical Electromygraphy: Case Studies". Archives of Neurology 56, n.º 6 (1 de junho de 1999): 758—a—759. http://dx.doi.org/10.1001/archneur.56.6.758-a.

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Onodera, Andrea N., Aline A. Gomes, Denise Pripas, Rinaldo A. Mezzarane e Isabel C. N. Sacco. "Lower limb electromygraphy and kinematics of neuropathic diabetic patients during real-life activities: Stair negotiation". Muscle & Nerve 44, n.º 2 (22 de junho de 2011): 269–77. http://dx.doi.org/10.1002/mus.22072.

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3

Tigre, Joseph Yunga, Andrew J. Kloehn, Ava Scemama, James Boddu, Meredith C. Costello, Allan D. Levi e S. Shelby Burks. "Resection of a lumbar intradural tumor". Surgical Neurology International 14 (20 de outubro de 2023): 377. http://dx.doi.org/10.25259/sni_770_2023.

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Background: Myxopapillary ependymomas and schwannomas represent the most common tumors of the conus medullaris and cauda equina. Here, we present the surgical resection of a 64-year-old male with a lumbar intradural tumor. Case Description: A 64-year-old male presented with several months of the lower extremity weakness, pain, and bowel/bladder dysfunction. Magnetic resonance imaging demonstrated a large L3–5 intradural lesion, and surgical resection using intraoperative neuromonitoring with somatosensory evoked potentials (SSEPs), motor evoked potentials (MEPs), free-running electromygraphy (EMGs), and direct sphincter monitoring was recommended. After an L2-S1 laminectomy was performed, intraoperative ultrasound was used to confirm the cranial and caudal extent of the tumor. The dural was opened using a midline approach, and the tumor was quickly visualized. Through careful dissection, the tumor was debulked and gross total resection was ultimately achieved through a piecemeal resection. Hemostasis was frequently required throughout the case, as the tumor was highly vascular. Postoperatively, the patient was at his neurologic baseline and was discharged to rehab on postoperative day 4. The final pathology revealed the intradural lesion was a paraganglioma. Conclusion: Early intervention and gross total resection of spinal intradural tumors are associated with optimal patient outcomes. Additional adjuncts, such as ultrasound, are beneficial and can help achieve gross total tumor resection.
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4

Ellerby, D. J., J. D. Altringham, T. Williams e B. A. Block. "Slow muscle function of Pacific bonito (Sarda chiliensis) during steady swimming". Journal of Experimental Biology 203, n.º 13 (1 de julho de 2000): 2001–13. http://dx.doi.org/10.1242/jeb.203.13.2001.

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The Pacific bonito, Sarda chiliensis, is anatomically intermediate between mackerel and tuna. The specialisations exhibited by tuna are present in the bonito, but to a lesser degree. Slow-twitch muscle strain and activity patterns were determined during steady swimming (tailbeat frequency 1.2-3.2 Hz) at four locations on the body of Sarda chiliensis using sonomicrometry and electromyography. Both strain and the phase of electromygraphic activity were independent of tailbeat frequency. The strain of superficial slow-twitch muscle increased from +/−3.1 % l(0) at 0.35FL to +/−5.8 % l(0) at 0.65FL, where l(0) is muscle resting length and FL is the body length from snout to tail fork. Between 0.35 and 0.65FL, there was a negative phase shift of 16 degrees in the onset of electromygraphic activity in superficial slow-twitch muscle relative to the strain cycle. Muscle activity patterns are comparable with those of tuna. At 0.58FL, the onset of activity in deep slow-twitch muscle was approximately synchronous with the onset of activity in superficial muscle in the same myotome at 0.65FL. The distribution of slow-twitch muscle along the body of Sarda chiliensis and four additional fish species, Anguilla anguilla, Oncorhynchus mykiss, Scomber scombrus and Thunnus albacares, was also measured. Slow-twitch muscle appears to become more concentrated at approximately 0.5FL as swimming kinematics become more thunniform.
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Astami, Kastam, e Arga Aridarma. "Toward Applications of EMG and Preliminary Study in the Next Design of Compact Integrated Bio-Signal Recording System". International Journal of E-Health and Medical Communications 1, n.º 3 (julho de 2010): 57–66. http://dx.doi.org/10.4018/jehmc.2010070106.

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Electromygraph or EMG is a device used to measure and record muscle signal. The developments of microelectronics allow the design and realization of such a device with current off-shelf components. The authors developed system consists of multi-channel analog circuitry and is microcontroller based to facilitate connectivity with a computer or laptop as a recording platform. From this developed system, the authors further improve the system by referring to the previous result. One of the improvements is the user controllable gain of each channel. However, beyond the improvement to the system, the use it in an acupuncture experiment for recording muscle signal during the acupuncture process. This paper also explores the possibility of implementing muscle signal as a control for an assistive system and integrating it for an integrated bio-signal recording system.
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Cuddeford, Tyler, Ann K. Williams e John M. Medeiros. "Electromygraphic Activity of the Vastus Medialis Oblique and Vastus Lateralis Muscles During Selected Exercises". Journal of Manual & Manipulative Therapy 4, n.º 1 (janeiro de 1996): 10–15. http://dx.doi.org/10.1179/jmt.1996.4.1.10.

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HAZAKI, Kan, e Noriaki ICHIHASHI. "The Effect of Position during Muscle Setting: Analysis of the Electromygraphic Activity of the Superficial Quadriceps." Rigakuryoho kagaku 11, n.º 2 (1996): 81–84. http://dx.doi.org/10.1589/rika.11.81.

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Dreher, Thomas, Reinald Brunner, Dóra Vegvari, Daniel Heitzmann, Simone Gantz, Michael W. Maier, Frank Braatz e Sebastian I. Wolf. "Development of muscle tone and electromygraphic patterns after muscle-tendon surgery in children with spastic diplegia". Gait & Posture 38 (novembro de 2013): S80—S81. http://dx.doi.org/10.1016/j.gaitpost.2013.07.170.

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9

Abd El Hameed, Hala. "IMPACT OF NYLON INSERTS FOR THE LOCATOR ATTACHMENT ON FUNCTIONAL ADAPTATION FOR MANDIBULAR OVER DENTURE WEARER (ELECTROMYGRAPHIC ANALYSIS)". Egyptian Dental Journal 66, n.º 2 (1 de abril de 2020): 1195–204. http://dx.doi.org/10.21608/edj.2020.24155.1032.

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10

Ehny, Jean-Philippe, Yoshimasa Sagawa, Laurent Tatu, Ludivine Chamard, Bernard Parratte e Pierre Decavel. "Locomotor aspects in the hereditary spastic paraplegia, spatio-temporal and electromygraphic analyzes in a prospective cohort of twelve patients". Annals of Physical and Rehabilitation Medicine 59 (setembro de 2016): e119-e120. http://dx.doi.org/10.1016/j.rehab.2016.07.270.

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Raichlen, David A., Herman Pontzer, Theodore W. Zderic, Jacob A. Harris, Audax Z. P. Mabulla, Marc T. Hamilton e Brian M. Wood. "Sitting, squatting, and the evolutionary biology of human inactivity". Proceedings of the National Academy of Sciences 117, n.º 13 (9 de março de 2020): 7115–21. http://dx.doi.org/10.1073/pnas.1911868117.

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Recent work suggests human physiology is not well adapted to prolonged periods of inactivity, with time spent sitting increasing cardiovascular disease and mortality risk. Health risks from sitting are generally linked with reduced levels of muscle contractions in chair-sitting postures and associated reductions in muscle metabolism. These inactivity-associated health risks are somewhat paradoxical, since evolutionary pressures tend to favor energy-minimizing strategies, including rest. Here, we examined inactivity in a hunter-gatherer population (the Hadza of Tanzania) to understand how sedentary behaviors occur in a nonindustrial economic context more typical of humans’ evolutionary history. We tested the hypothesis that nonambulatory rest in hunter-gatherers involves increased muscle activity that is different from chair-sitting sedentary postures used in industrialized populations. Using a combination of objectively measured inactivity from thigh-worn accelerometers, observational data, and electromygraphic data, we show that hunter-gatherers have high levels of total nonambulatory time (mean ± SD = 9.90 ± 2.36 h/d), similar to those found in industrialized populations. However, nonambulatory time in Hadza adults often occurs in postures like squatting, and we show that these “active rest” postures require higher levels of lower limb muscle activity than chair sitting. Based on our results, we introduce the Inactivity Mismatch Hypothesis and propose that human physiology is likely adapted to more consistently active muscles derived from both physical activity and from nonambulatory postures with higher levels of muscle contraction. Interventions built on this model may help reduce the negative health impacts of inactivity in industrialized populations.
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12

Fels, Meike, Robert Bauer e Alireza Gharabaghi. "Predicting workload profiles of brain–robot interface and electromygraphic neurofeedback with cortical resting-state networks: personal trait or task-specific challenge?" Journal of Neural Engineering 12, n.º 4 (14 de julho de 2015): 046029. http://dx.doi.org/10.1088/1741-2560/12/4/046029.

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13

Bonen, Arend, Cameron Blewett, John C. McDermott e Geoffrey C. B. Elder. "A model for nonexercising hindlimb muscles in exercising animals". Canadian Journal of Physiology and Pharmacology 68, n.º 7 (1 de julho de 1990): 914–21. http://dx.doi.org/10.1139/y90-140.

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Nonexercising muscles appear to be metabolically active during exercise. Animal models for this purpose have not been established. However, we have been able to teach animals to run on their forelimbs while their hindlimbs are suspended above the treadmill with no visible limb movement. To document that indeed this mode of exercise does not provoke additional muscle activity, we have compared the levels of neural activation of the soleus and plantaris muscles using a computer analysis of the electromyographic interference pattern, recorded from bipolar fine wire electrodes implanted across each muscle. Via computer analyses of the electromygraphic interference patterns the frequencies and amplitudes of motor unit action potentials were obtained. The data were sampled during 20 s of every minute of observation. Comparisons were made in four conditions: (i) resting on the treadmill while bearing weight on the hindlimbs (normal rest), (ii) running on the treadmill (15 m/min, 8% grade) on all four limbs (normal exercise), (iii) resting while the hindlimbs were suspended in a harness above the treadmill (suspended rest), and (iv) exercising with the forelimbs (15 m/min, 8% grade) while the hindlimbs were suspended above the treadmill (suspended exercise). All four experimental conditions were carried out for 90 min each and were performed by each animal. The results clearly show that muscle activities (frequencies and amplitudes), when the hindlimbs are suspended above the treadmill, at rest or during exercise, are lower than the activities in these same muscles when the animals are at rest, supporting only their body weight. Activities in the same muscles during exercise were from 300 to 2000% greater than during hindlimb suspension. Despite these large differences in muscle activities, comparable quantities of glycogen are lost from these hindlimb suspended (nonexercising) muscles during exercise and when these same muscles are performing the exercise. The physiologic data indicate that suspending the hindlimbs of a rat during forelimb exercise provides a convenient animal model for the study of nonexercising muscle during exercise. In fact the soleus and plantaris activities during suspended exercise are less than during normal rest.Key words: soleus, plantaris, nonexercising muscle, electromyography.
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14

Alias, Ayuni Nabilah, e Karmegam Karuppiah. "Effectiveness of armrest prototype on muscle activity among male motorcyclists". International journal of health sciences, 29 de setembro de 2022, 47089–102. http://dx.doi.org/10.53730/ijhs.v6ns7.13098.

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Introduction: Motorcycle is one of the main transports in Malaysia that has been used for decades either for daily life activities or for working. Motorcyclist is the most important element when issues that are related to motorcycle. Therefore, this study will be able to provide evidence to reduce level electromygraphy (muscle activity) with the intervention of armrest prototype which indirectly reduce riding discomfort during prolonged riding process.Method: In 2 different sessions (with and without armrest), 102 respondents were instructed to ride a motorcycle for 2 hours in a laboratory with riding simulator system. The video screen presented by projector a view as motorcyclist in road scenery with computer generated video simulating daytime riding condition. Besides that, Electromyography (EMG) signals were used to assess recorded muscle activity for the right and left arm with the surface of electrode attached. Results: Muscle activity of respondents showed that there are reductions of electromyography levels for both right and left arm’s muscles. There is a positive effect of exertion changes (%) on the flexor carpum radialis (right=24.54%, left=23.98%) and flexor carpum ulnaris (right=8.18%, left=10.62%) muscles of both arms with usage of prototype.
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Ratanapinunchai, Jonjin, e Ifham Madeeyoh. "Differences in Electromygraphic Activity of the Middle and the Lower Serratus Anterior Fibers During Open and Closed Kinematics Exercises". Journal of Strength and Conditioning Research Publish Ahead of Print (16 de julho de 2020). http://dx.doi.org/10.1519/jsc.0000000000003744.

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