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Electromyography

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https://www.readbyqxmd.com/read/28431431/an-ipsilateral-comparison-of-acceleromyography-and-electromyography-during-recovery-from-nondepolarizing-neuromuscular-block-under-general-anesthesia-in-humans-erratum
#1
(no author information available yet)
No abstract text is available yet for this article.
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28428836/muscle-function-and-fatigability-of-trunk-flexors-in-males-and-females
#2
Rita E Deering, Jonathon W Senefeld, Tatyana Pashibin, Donald A Neumann, Sandra K Hunter
BACKGROUND: Optimal function of the abdominal muscles is necessary for several life functions including lifting and carrying tasks. Sex differences in strength and fatigability are established for many limb muscles and back extensor muscles, but it is unknown if sex differences exist for the abdominal muscles despite their functional importance. METHODS: Eighteen females (24.3 ± 4.8 years) and 15 males (24.1 ± 6.6 years) performed (1) isometric trunk flexion maximal voluntary contractions (MVCs) in a range of trunk positions to establish a torque-angle curve and (2) submaximal (50% MVC), intermittent isometric contraction (6 s on, 4 s off) until task failure to determine fatigability of the trunk flexor muscles...
2017: Biology of Sex Differences
https://www.readbyqxmd.com/read/28428630/hinge-deleted-igg4-blocker-therapy-for-acetylcholine-receptor-myasthenia-gravis-in-rhesus-monkeys
#3
Mario Losen, Aran F Labrijn, Vivianne H van Kranen-Mastenbroek, Maarten L Janmaat, Krista G Haanstra, Frank J Beurskens, Tom Vink, Margreet Jonker, Bert A 't Hart, Marina Mané-Damas, Peter C Molenaar, Pilar Martinez-Martinez, Eline van der Esch, Janine Schuurman, Marc H de Baets, Paul W H I Parren
Autoantibodies against ion channels are the cause of numerous neurologic autoimmune disorders. Frequently, such pathogenic autoantibodies have a restricted epitope-specificity. In such cases, competing antibody formats devoid of pathogenic effector functions (blocker antibodies) have the potential to treat disease by displacing autoantibodies from their target. Here, we have used a model of the neuromuscular autoimmune disease myasthenia gravis in rhesus monkeys (Macaca mulatta) to test the therapeutic potential of a new blocker antibody: MG was induced by passive transfer of pathogenic acetylcholine receptor-specific monoclonal antibody IgG1-637...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427422/differences-in-muscle-activity-and-temporal-step-parameters-between-lokomat-guided-walking-and-treadmill-walking-in-post-stroke-hemiparetic-patients-and-healthy-walkers
#4
Klaske van Kammen, Anne M Boonstra, Lucas H V van der Woude, Heleen A Reinders-Messelink, Rob den Otter
BACKGROUND: The Lokomat is a robotic exoskeleton that can be used to train gait function in hemiparetic stroke. To purposefully employ the Lokomat for training, it is important to understand (1) how Lokomat guided walking affects muscle activity following stroke and how these effects differ between patients and healthy walkers, (2) how abnormalities in the muscle activity of patients are modulated through Lokomat guided gait, and (3) how temporal step characteristics of patients were modulated during Lokomat guided walking...
April 20, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28427305/neuromechanical-adaptations-during-a-robotic-powered-exoskeleton-assisted-walking-session
#5
Arvind Ramanujam, Christopher M Cirnigliaro, Erica Garbarini, Pierre Asselin, Rakesh Pilkar, Gail F Forrest
OBJECTIVE: To evaluate gait parameters and neuromuscular profiles of exoskeleton-assisted walking under Max Assist condition during a single-session for; (i) able bodied (AB) individuals walking assisted with (EXO) and without (non-EXO) a powered exoskeleton, (ii) non-ambulatory SCI individuals walking assisted with a powered exoskeleton. DESIGN: Single-session. SETTING: Motion analysis laboratory. PARTICIPANTS: Four AB individuals and four individuals with SCI...
April 20, 2017: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/28423987/reproducibility-of-upper-leg-emg-frequency-content-during-cycling
#6
Rodrigo Rico Bini, Camila Peter Hoefelmann, Vitor Pereira Costa, Fernando Diefenthaeler
Reproducibility of frequency content from surface electromyography (sEMG) signals has not been assessed and it is unknown if incremental load testing design could affect sEMG in cycling. The goals of this study were to assess the reproducibility of measures from sEMG frequency content between sessions and to compare these frequency components between a ramp and a step incremental cycling test. Eighteen cyclists performed four incremental load cycling tests to exhaustion. Two tests were performed using a step increment (load started at 100 W for 3 min followed by increments of 30 W every 3 min) and two were performed using a ramp increment (load started at 100 W for 1 min followed by increments of 30 W·min(-1))...
April 20, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28423061/muscle-contributions-to-medial-tibiofemoral-compartment-contact-loading-following-acl-reconstruction-using-semitendinosus-and-gracilis-tendon-grafts
#7
Jason M Konrath, David J Saxby, Bryce A Killen, Claudio Pizzolato, Christopher J Vertullo, Rod S Barrett, David G Lloyd
BACKGROUND: The muscle-tendon properties of the semitendinosus (ST) and gracilis (GR) are substantially altered following tendon harvest for the purpose of anterior cruciate ligament reconstruction (ACLR). This study adopted a musculoskeletal modelling approach to determine how the changes to the ST and GR muscle-tendon properties alter their contribution to medial compartment contact loading within the tibiofemoral joint in post ACLR patients, and the extent to which other muscles compensate under the same external loading conditions during walking, running and sidestep cutting...
2017: PloS One
https://www.readbyqxmd.com/read/28422571/reliability-of-measuring-lower-limb-muscle-emg-activity-ratio-in-activities-of-daily-living-with-electrodes-embedded-in-the-clothing
#8
Dagny Bengs, Ira Jeglinsky, Jukka Surakka, Thomas Hellsten, Joachim Ring, Jyrki Kettunen
CONTEXT: Using technical clothes with electrodes embedded in the clothing makes it possible to record the electrical activity produced by the activity of the skeletal muscles in activities of daily living. OBJECTIVE: The aim of the study was to investigate the reliability of measuring lower-limb left-right electromyography (EMG) activity ratio with smart shorts during stair descent, stair ascent, and repeated unloaded squats among healthy working-aged subjects. METHODS: Seventeen females (mean age 25...
April 19, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28422559/the-influence-of-ambulatory-aid-on-lower-extremity-muscle-activation-during-gait
#9
Michael Sanders, Anton E Bowden, Spencer Baker, Ryan Jensen, McKenzie Nichols
CONTEXT: Foot and ankle injuries are common, and often require a non-weight bearing period of immobilization for the involved leg. This non-weight bearing period usually results in muscle atrophy for the involved leg. There is a dearth of objective data describing muscle activation for different ambulatory aids that are used during the aforementioned non-weight bearing period. OBJECTIVE: To compare activation amplitudes for four leg muscles during (1) able-bodied gait and (2) ambulation involving three different ambulatory aids that can be used during the acute phase of foot and ankle injury care...
April 19, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28420353/the-influence-of-fatigue-and-chronic-low-back-pain-on-muscle-recruitment-patterns-following-an-unexpected-external-perturbation
#10
Júlia Jubany, Lieven Danneels, Rosa Angulo-Barroso
BACKGROUND: Chronic low back pain (CLBP) has been associated with altered trunk muscle responses as well as increased muscle fatigability. CLBP patients and fatigued healthy subjects could experience similar neuromuscular strategies to attempt to protect the spine. The current study examined muscle activation differences between healthy and CLBP subjects following a perturbation. In addition, the possible role of muscle fatigue was evaluated by investigating the healthy control subjects in a non-fatigued and a fatigued condition...
April 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28419532/electromyography-in-the-assessment-and-therapy-of-lower-urinary-tract-dysfunction-in-adults
#11
REVIEW
Jan Krhut, Roman Zachoval, Peter F W M Rosier, Beth Shelly, Peter Zvara
AIM: To present the teaching module "Electromyography in the assessment and therapy of lower urinary tract dysfunction in adults." This teaching module embodies a presentation, in combination with this manuscript. This manuscript serves as a scientific background review; the evidence base made available on ICS website to summarize current knowledge and recommendations. METHODS: This review has been prepared by a Working Group of The ICS Urodynamics Committee. The methodology used included comprehensive literature review, consensus formation by the members of the Working Group, and review by members of the ICS Urodynamics Committee core panel...
April 18, 2017: Neurourology and Urodynamics
https://www.readbyqxmd.com/read/28418751/influence-of-exergaming-on-the-perception-of-cancer-related-fatigue
#12
Ricardo da Silva Alves, Denise Hollanda Iunes, Isabela Carvalho Pereira, Juliana Bassalobre Carvalho Borges, Denismar Alves Nogueira, Andreia Maria Silva, Daniel Ferreira Moreira Lobato, Leonardo Cesar Carvalho
OBJECTIVE: Exercise is recommended for cancer patients to reduce fatigue and improve quality of life. This study's aim is to evaluate the influence of an exergaming protocol on cancer-related fatigue, muscle fatigue, and muscle strength in cancer patients. MATERIALS AND METHODS: We conducted a quasi-experimental control study using exergaming in all groups through an Xbox360 Kinect™ console, two to three times per week, for 20 sessions. Three groups were created: cancer patients in chemotherapy and/or radiotherapy group (CRG; n:15), cancer patients after chemotherapy and/or radiotherapy (CAG; n:15), and a control group (CG; n:15)...
April 2017: Games for Health
https://www.readbyqxmd.com/read/28418363/-correlation-of-the-intra-operative-neuromonitoring-data-and-emg-characteristics-of-post-operative-motor-deficit-in-patients-with-spinal-deformities
#13
А P Shein, М S Sayphutdinov, А А Skripnikov, G А Krivoruchko, S О Ryabykh
AIM: To correlate electroneuromyigraphic (ENMG) manifestations of post-operative motor deficit developed in patients after spinal deformity correction with qualitative evaluation of the severity of intra-operative pyramidal disorders according to protocol of intra-operative neuromonitoring (IONM). MATERIAL AND METHODS: ENMG data of 87 patients aged 6-43 years with spinal deformities of different etiology were analyzed before and after surgical correction and were correlated with intra-operative neuromonitoring course...
2017: Khirurgiia
https://www.readbyqxmd.com/read/28417610/functional-outcome-of-critical-illness-polyneuropathy-in-patients-affected-by-severe-brain-injury
#14
Domenico Intiso, Filomena DI Rienzo, Andrea Fontana, Maurizio Tolfa, Michelangelo Bartolo, Massimiliano Copetti
BACKGROUND: Critical illness polyneuropathy and myopathy (CIPNM) frequently occur in intensive care unit (ICU) critically ill subjects; about 55-70% of subjects achieve full recovery. CIPNM can occur in ICU subjects with severe acquired brain injury (sABI), but no data have been reported regarding their outcome. AIM: The aim of the present study was to investigate the functional recovery in subjects suffering from both CIPNM and sABI and whether they had poorer outcome than those with sABI only...
April 14, 2017: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/28416354/unilateral-jumps-in-different-directions-a-novel-assessment-of-soccer-associated-power
#15
Conall F Murtagh, Jos Vanrenterghem, Andrew O'Boyle, Ryland Morgans, Barry Drust, Robert M Erskine
OBJECTIVES: We aimed to determine whether countermovement jumps (CMJs; unilateral and bilateral) performed in different directions assessed independent lower-limb power qualities, and if unilateral CMJs would better differentiate between elite and non-elite soccer players than the bilateral vertical (BV) CMJ. DESIGN: Elite (n=23; age, 18.1±1.0years) and non-elite (n=20; age, 22.3±2.7years) soccer players performed three BV, unilateral vertical (UV), unilateral horizontal-forward (UH) and unilateral medial (UM) CMJs...
March 29, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28414741/effects-of-music-on-arousal-during-imagery-in-elite-shooters-a-pilot-study
#16
Garry Kuan, Tony Morris, Peter Terry
Beneficial effects of music on several performance-related aspects of sport have been reported, but the processes involved are not well understood. The purpose of the present study was to investigate effects of relaxing and arousing classical music on physiological indicators and subjective perceptions of arousal during imagery of a sport task. First, appropriate music excerpts were selected. Then, 12 skilled shooters performed shooting imagery while listening to the three preselected music excerpts in randomized order...
2017: PloS One
https://www.readbyqxmd.com/read/28414608/mechanobehavioral-scores-in-women-with-and-without-tmj-disc-displacement
#17
L R Iwasaki, Y M Gonzalez, Y Liu, H Liu, M Markova, L M Gallo, J C Nickel
Cartilage fatigue may be a factor in the precocious development of degenerative changes in the temporomandibular joint (TMJ). This cross-sectional study estimated potential for cartilage fatigue via TMJ energy densities (ED) and jaw muscle duty factors (DF), which were combined to calculate mechanobehavioral scores (MBS) in women with (+) and without (-) bilateral TMJ disc displacement (DD). All subjects gave informed consent to participate and were examined using Diagnostic Criteria (DC) for Temporomandibular Disorders (TMD) and magnetic resonance (MR) and computed tomography (CT) images...
April 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28414508/dissociating-affective-and-semantic-valence
#18
Oksana Itkes, Ruth Kimchi, Hadeel Haj-Ali, Avia Shapiro, Assaf Kron
We examined the possible dissociation between two modes of valence: affective valence (valence of e emotional response) and semantic valence (stored knowledge about valence of an object or event). In Experiment 1, 50 participants viewed affective pictures that were repeatedly presented while their facial electromyography (EMG) activation and heart rate response were continuously recorded. Half of the participants provided self-report ratings about the valence of their feelings and half about the valence of the stimulus...
April 17, 2017: Journal of Experimental Psychology. General
https://www.readbyqxmd.com/read/28411326/neck-muscle-emg-force-relationship-and-its-reliability-during-isometric-contractions
#19
Riccardo Lo Martire, Kristofer Gladh, Anton Westman, Björn O Äng
BACKGROUND: Susceptible to injury, the neck is subject to scientific investigations, frequently aiming to elucidate possible injury mechanisms via surface electromyography (EMG) by indirectly estimating cervical loads. Accurate estimation requires that the EMG-force relationship is known and that its measurement error is quantified. Hence, this study examined the relationship between EMG and isometric force amplitude of the anterior neck (AN), the upper posterior neck (UPN), and the lower posterior neck (LPN) and then assessed the relationships' test-retest reliability across force-percentiles within and between days...
December 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28410805/startle-responses-in-functional-jerky-movement-disorders-are-increased-but-have-a-normal-pattern
#20
Y E M Dreissen, T Boeree, J H T M Koelman, M A J Tijssen
BACKGROUND: Exaggerated startle reactions have been frequently described in patients with functional movement disorders (FMD). Long onset latencies and inconsistent recruitment pattern are thought to be a hallmark in these patients. The auditory startle reflex has not been systematically assessed though. OBJECTIVES: Assessing the frequency and pattern of the early and late component of the auditory startle response in patients with functional jerky movement disorders...
April 6, 2017: Parkinsonism & related Disorders
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