keyword
MENU ▼
Read by QxMD icon Read
search

Electrical muscle stimulation

keyword
https://www.readbyqxmd.com/read/28339828/single-session-of-functional-electrical-stimulation-assisted-walking-produces-corticomotor-symmetry-changes-related-to-changes-in-poststroke-walking-mechanics
#1
Jacqueline A Palmer, HaoYuan Hsiao, Tamara Wright, Stuart A Binder-Macleod
Background: Recent research demonstrated that symmetry of corticomotor drive to paretic and nonparetic plantarflexor muscles are related to the biomechanical ankle moment strategy that individuals with chronic stroke used to achieve their greatest walking speeds. Rehabilitation strategies that promote corticomotor balance could potentially improve post-stroke walking mechanics and enhance functional ambulation. Objective: To 1) test the effectiveness of a single session of gait training using functional electrical stimulation (FES) to improve plantarflexor corticomotor symmetry and plantarflexion ankle moment symmetry and 2) determine if changes in corticomotor symmetry relate to changes in ankle moment symmetry within the session...
February 23, 2017: Physical Therapy
https://www.readbyqxmd.com/read/28339404/the-influence-of-task-related-training-combined-with-transcutaneous-electrical-nerve-stimulation-on-paretic-upper-limb-muscle-activation-in-patients-with-chronic-stroke
#2
Kyoungsim Jung, Jinhwa Jung, Taesung In, Taehoon Kim, Hwi-Young Cho
OBJECTIVES: This study investigated the efficacy of Task-Related Training (TRT) Combined with Transcutaneous Electrical Nerve Stimulation (TENS) on the improvement of upper limb muscle activation in chronic stroke survivors with mild or moderate paresis. METHODS: A single-blind, randomized clinical trial was conducted with 46stroke survivors with chronic paresis. They were randomly allocated two groups: the TRT+TENS group (n = 23) and the TRT+ placebo TENS (TRT+PLBO) group (n = 23)...
March 23, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28332745/5-ht4-receptors-facilitate-cholinergic-neurotransmission-throughout-the-murine-gastrointestinal-tract
#3
V Pauwelyn, R A Lefebvre
BACKGROUND: In the gastrointestinal tract of several species, facilitating 5-HT4 receptors were proposed on myenteric cholinergic neurons innervating smooth muscle by in vitro study of the effect of the selective 5-HT4 receptor agonist prucalopride on submaximal cholinergic contractions. This was not yet established in the murine gastrointestinal tract. METHODS: In circular smooth muscle strips from murine fundus, jejunum and colon, contractions were induced by electrical field stimulation in the presence of guanethidine, L-NAME and for colon also MRS 2500...
March 23, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28332444/a-functional-electrical-stimulation-system-for-human-walking-inspired-by-reflexive-control-principles
#4
Lin Meng, Bernd Porr, Catherine A Macleod, Henrik Gollee
This study presents an innovative multichannel functional electrical stimulation gait-assist system which employs a well-established purely reflexive control algorithm, previously tested in a series of bipedal walking robots. In these robots, ground contact information was used to activate motors in the legs, generating a gait cycle similar to that of humans. Rather than developing a sophisticated closed-loop functional electrical stimulation control strategy for stepping, we have instead utilised our simple reflexive model where muscle activation is induced through transfer functions which translate sensory signals, predominantly ground contact information, into motor actions...
April 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28327054/effects-of-low-frequency-repetitive-transcranial-magnetic-stimulation-and-neuromuscular-electrical-stimulation-on-upper-extremity-motor-recovery-in-the-early-period-after-stroke-a-preliminary-study
#5
Aliye Tosun, Sabiha Türe, Ayhan Askin, Engin Ugur Yardimci, Secil Umit Demirdal, Tülay Kurt Incesu, Ozgur Tosun, Hikmet Kocyigit, Galip Akhan, Fazıl Mustafa Gelal
OBJECTIVE: To assess the efficacy of inhibitory repetitive transcranial magnetic stimulation (rTMS) and neuromuscular electrical stimulation (NMES) on upper extremity motor function in patients with acute/subacute ischemic stroke. METHODS: Twenty-five ischemic acute/subacute stroke subjects were enrolled in this randomized controlled trial. Experimental group 1 received low frequency (LF) rTMS to the primary motor cortex of the unaffected side + physical therapy (PT) including activities to improve strength, flexibility, transfers, posture, balance, coordination, and activities of daily living, mainly focusing on upper limb movements; experimental group 2 received the same protocol combined with NMES to hand extensor muscles; and the control group received only PT...
March 22, 2017: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/28325731/effects-of-genetic-deletion-of-soluble-5-nucleotidases-nt5c1a-and-nt5c2-on-ampk-activation-and-nucleotide-levels-in-contracting-mouse-skeletal-muscles
#6
Samanta Kviklyte, Didier Vertommen, Xavier Yerna, Harriet Andersén, Xiufeng Xu, Philippe Gailly, Mohammad Bohlooly-Y, Jan Oscarsson, Mark H Rider
AMP-activated protein kinase (AMPK) plays a key role in energy homeostasis and is activated in response to contraction-induced ATP depletion in skeletal muscle via a rise in intracellular AMP/ADP concentrations. AMP can be deaminated by AMP-deaminase to IMP, which is hydrolysed to inosine by cytosolic 5'-nucleotidase-II (NT5C2). AMP can also be hydrolysed to adenosine by cytosolic 5'-nucleotidase-IA (NT5C1A). Previous gene silencing and overexpression studies indicated control of AMPK activation by NT5C enzymes...
March 21, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28324978/influence-of-electrode-configuration-on-the-electric-field-distribution-during-transcutaneous-spinal-direct-current-stimulation-of-the-cervical-spine
#7
Sofia R Fernandes, Ricardo Salvador, Cornelia Wenger, Mamede A de Carvalho, Pedro C Miranda
Transcutaneous spinal direct current stimulation (tsDCS) is a recent technique with promising neuromodulatory effects on spinal neuronal circuitry. The main objective of the present study was to perform a finite element analysis of the electric field distribution in tsDCS in the cervical spine region, with varying electrode configurations and geometry. A computational model of a human trunk was generated with nine tissue meshes. Three electrode configurations were tested: A) rectangular saline-soaked sponge target and return electrodes placed over C3 and T3 spinous processes, respectively; B1) circular saline-soaked sponge target and return electrodes placed over C7 spinous process and right deltoid muscle, respectively; B2) same configuration as B1, considering circular shaped electrodes with sponge and rubber layers and a small circular connector on the top surface...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324754/effects-of-sit-to-stand-training-combined-with-transcutaneous-electrical-stimulation-on-spasticity-muscle-strength-and-balance-ability-in-patients-with-stroke-a-randomized-controlled-study
#8
Kyoung-Sim Jung, Tae-Sung In, Hwi-Young Cho
Sit-to-stand is a fundamental movement of human being for performing mobility and independent activity. However, Stroke people symptoms experience difficulty in conducting the sit-to-stand due to paralysis and especially ankle spasticity. Recently, transcutaneouselectrical- stimulation (TENS) is used to reduce pain but also to manage spasticity. The purpose of this study was to determine (1) whether TENS would lead to ankle spasticity reduction and (2) whether sit-to-stand training combined with TENS would improve spasticity, muscle strength and balance ability in stroke patients...
March 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28321943/development-of-3d-intramural-and-surface-potentials-in-the-lv-microstructural-basis-of-preferential-transmural-conduction
#9
Bryan J Caldwell, Mark L Trew, Ian J Legrice, Bruce H Smaill
INTRODUCTION: Extracellular potentials measured on the heart surfaces are used to infer events that originate deep within the heart wall. We have reconstructed intramural potentials in three dimensions for the first time, and compare these with epicardial and endocardial surface potentials and cardiac microstructure. METHODS AND RESULTS: Extracellular potentials from intramural point stimulation were measured from a high density 3D electrode array in the in vivo pig LV...
March 21, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28319585/increased-fatigue-response-to-augmented-deceptive-feedback-during-cycling-time-trial
#10
Guillaume P Ducrocq, Thomas J Hureau, Olivier Meste, Grégory M Blain
PURPOSE: This study aimed to investigate the effect of different magnitudes of deception on performance and exercise-induced fatigue during cycling time-trial. METHODS: Following three familiarization visits, three females and eight males performed three 5 km cycling time-trials while following a simulated dynamic avatar reproducing either 100% (5K100%), 102% (5K102%) or 105% (5K105%) of the subject's previous fastest trial. Quadriceps muscle activation was quantified with surface electromyography...
March 18, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28317837/inhibitory-responses-mediated-by-vagal-nerve-stimulation-are-diminished-in-stomachs-of-mice-with-reduced-intramuscular-interstitial-cells-of-cajal
#11
Elizabeth A H Beckett, Kenton M Sanders, Sean M Ward
Intramuscular interstitial cells of Cajal (ICC-IM) are closely associated with enteric motor nerve terminals and electrically coupled to smooth muscle cells within the gastric musculature. Previous studies investigating the role of ICC-IM in motor neurotransmission have used indiscriminate electric field stimulation of neural elements within the gastric wall. To determine the role of ICC-IM in transduction of vagally-mediated motor input to gastric muscles electrical and mechanical responses to selective electrical vagal stimulation (EVS) were recorded from gastric fundus and antral regions of wild type and W/W(V) mice, which lack most ICC-IM...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315343/inhibition-of-agonist-induced-smooth-muscle-contraction-by-picotamide-in-the-male-human-lower-urinary-tract-outflow-region
#12
Martin Hennenberg, Alexander Tamalunas, Yiming Wang, Patrick Keller, Melanie Schott, Frank Strittmatter, Annika Herlemann, Qingfeng Yu, Beata Rutz, Anna Ciotkowska, Christian G Stief, Christian Gratzke
Male lower urinary tract symptoms (LUTS) due to bladder outlet obstruction are characterized by abnormal smooth muscle contractions in the lower urinary tract. Alpha1-adrenoceptor antagonists may induce smooth muscle relaxation in the outflow region and represent the current goldstandard of medical treatment. However, results may be unsatisfactory or inadequate. Apart from α1-adrenoceptor agonists, smooth muscle contraction in the outflow region may be induced by thromboxane A2 (TXA2), endothelins, or muscarinic receptor agonists...
March 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28314519/after-effects-of-peripheral-neurostimulation-on-brain-plasticity-and-ankle-function-in-chronic-stroke-the-role-of-afferents-recruited
#13
Louis-David Beaulieu, Hugo Massé-Alarie, Samuel Camiré-Bernier, Édith Ribot-Ciscar, Cyril Schneider
AIMS OF THE STUDY: This study tested the after-effects of neuromuscular electrical stimulation (NMES), repetitive peripheral magnetic stimulation (rPMS) and muscle tendon vibration (VIB) on brain plasticity and sensorimotor impairments in chronic stroke to investigate whether different results could depend on the nature of afferents recruited by each technique. MATERIALS AND METHODS: Fifteen people with chronic stroke participated in five sessions (one per week)...
March 14, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/28298357/how-important-is-the-%C3%AE-1-adrenoceptor-in-primate-and-rodent-proximal-urethra-sex-differences-in-the-contribution-of-%C3%AE-1-adrenoceptor-to-urethral-contractility
#14
Eduardo C Alexandre, Mariana G de Oliveira, Rafael Campos, Luiz Ricardo A Kiguti, Fabiano B Calmasini, Fábio H Silva, Andrew D Grant, Naoki Yoshimura, Edson Antunes
Urethral smooth muscle (USM) contributes to urinary continence by contracting during the urine storage phase, which is mainly mediated by activation of post-junctional α1-adrenoceptors. Males and females show differences in the functioning of the lower urinary tract and the most common urinary tract symptoms (LUTS). LUTS in men typically occur in association with bladder outlet obstruction, whereas in women urinary urge-incontinence symptoms are more common. Therefore, this study aimed to evaluate sex differences in α1-adrenoceptor subtype expression and their importance in proximal urethra contraction in mouse (C57BL6/J) and marmoset (Callithrix jacchus)...
March 15, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28298356/the-glass-micropipette-electrode-a-history-of-its-inventors-and-users-to-1950
#15
Allan H Bretag
Soon after the glass micropipette was invented as a micro-tool for manipulation of single bacteria and the microinjection and microsurgery of living cells, it was seen to hold promise as a microelectrode to stimulate individual cells electrically and to study electrical potentials in them. Initial successes and accurate mechanistic explanations of the results were achieved in giant plant cells in the 1920s. Long known surface electrical activity in nerves and muscles was only resolved at a similar cellular level in the 1930s and 1940s after the discovery of giant nerve fibers and the development of finer tipped microelectrodes for normal-sized cells...
March 15, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28292829/non-linear-modulation-of-cutaneous-reflexes-with-increasing-speed-of-locomotion-in-spinal-cats
#16
Marie-France Hurteau, Yann Thibaudier, Charline Dambreville, Anass Chraibi, Etienne Desrochers, Alessandro Telonio, Alain Frigon
Cutaneous reflexes are important for rapidly responding to perturbations, correcting limb trajectory and strengthening support. During locomotion, they are modulated by phase to generate functionally appropriate responses. The goal of the present study was to determine if cutaneous reflexes and their phase-dependent modulation are altered with increasing speed and whether this is accomplished at a spinal level. Four adult cats that recovered stable hindlimb locomotion following spinal transection were implanted with electrodes to chronically record hindlimb muscle activity and to electrically stimulate the superficial peroneal nerve to evoke cutaneous reflexes...
March 14, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28291023/central-contribution-to-electrically-induced-fatigue-depends-on-stimulation-frequency
#17
Sidney Grosprêtre, Nicolas Gueugneau, Alain Martin, Romuald Lepers
PURPOSE: This study analyzed the impact of several protocols of neuromuscular electrical stimulation (NMES), matched with a similar total torque-time integral, on muscle activation pathways and neuromuscular fatigue. METHODS: Ten young healthy participants (age: 24.6 ± 4.2) performed 3 randomized NMES sessions on the triceps surae muscles with 20 Hz, 60 Hz or 100 Hz stimulation frequencies (pulse duration: 1 ms), with pulse amplitude (IES) set at 20 % of isometric maximal voluntary contraction (MVC)...
March 13, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28290507/inhibitory-interneuron-circuits-at-cortical-and-spinal-levels-are-associated-with-individual-differences-in-corticomuscular-coherence-during-isometric-voluntary-contraction
#18
Ryosuke Matsuya, Junichi Ushiyama, Junichi Ushiba
Corticomuscular coherence (CMC) is an oscillatory synchronization of 15-35 Hz (β-band) between electroencephalogram (EEG) of the sensorimotor cortex and electromyogram of contracting muscles. Although we reported that the magnitude of CMC varies among individuals, the physiological mechanisms underlying this variation are still unclear. Here, we aimed to investigate the associations between CMC and intracortical inhibition (ICI) in the primary motor cortex (M1)/recurrent inhibition (RI) in the spinal cord, which probably affect oscillatory neural activities...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287977/neurostimulation-strategy-for-stress-urinary-incontinence
#19
Xuechen Huang, Kaihui Zheng, Sam Kohan, Petcharat May Denprasert, Limin Liao, Gerald E Loeb
We have developed a percutaneously implantable and wireless microstimulator (NuStim®) to exercise the pelvic floor muscles for treatment of stress urinary incontinence. It produces a wide range of charge-regulated electrical stimulation pulses and trains of pulses using a simple electronic circuit that receives power and timing information from an externally generated RF magnetic field. The complete system was validated in vitro and in vivo in preclinical studies demonstrating that the NuStim can be successfully implanted into an effective, low threshold location and the implant can be operated chronically to produce effective and well-tolerated contractions of skeletal muscle...
March 7, 2017: IEEE Transactions on Neural Systems and Rehabilitation Engineering
https://www.readbyqxmd.com/read/28284822/-algorithms-and-urinary-incontinence-in-the-elderly-assessment-treatment-recommendations-and-levels-of-evidence-review
#20
P Meyer
OBJECTIVES: Search processing algorithms in a primary care setting, analyzing the specifics of care management for seniors suffering from urinary incontinence (UI), described the recommendations and levels of evidence of treatment. METHODS: A literature review carried out via PubMed(®) and websites of scientific societies with search keywords classified according to an algorithm. RESULTS: One hundred algorithms have been discovered in the field of evaluation and treatment of UI...
March 8, 2017: Progrès en Urologie
keyword
keyword
4638
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"