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https://www.readbyqxmd.com/read/29041823/therapists-cues-influence-lower-limb-muscle-activation-and-kinematics-during-gait-training-in-subacute-stroke
#1
Michelle Ploughman, Jennifer Shears, Susan Quinton, Cordell Flight, Michelle O'Brien, Phillip MacCallum, Megan C Kirkland, Jeannette M Byrne
PURPOSE: Symmetrical gait is a key goal of rehabilitation post-stroke. Therapists employ techniques such as verbal instruction and haptic cues to increase activation of paretic muscles. We examined whether verbal or tactile cueing altered spatiotemporal gait parameters, kinematics and electromyography (EMG) of lower limb muscles on the more-affected side within a training session. MATERIALS AND METHODS: Patients (n = 10) were recruited from rehabilitation services (<9 months post-stroke)...
October 17, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/29032220/electodiagnostic-and-advanced-neuro-imaging-characterization-for-successful-treatment-of-a-spinal-extradural-arachnoid-cyst
#2
Tomoko Tanaka, Raja S Boddepalli, Douglas C Miller, Zongxian Cao, Vivek Sindhwani, Joan R Coates, Raghav Govindarajan, N Scott Litofsky
BACKGROUND: Spinal extradural arachnoid cysts (SEAC) are relatively uncommon. However, several large cysts have presented with spinal cord compression requiring surgical intervention. CASE DESCRIPTION: We report a patient with progressively enlarging SEAC causing worsening right S1 radiculopathy and gastrocnemius muscle atrophy. Electromyography (EMG) and nerve conduction studies (NCS) revealed an S1 motor radiculopathy. Serial magnetic resonance imaging (MRI) findings confirmed enlargement of the small cyst originating from the sacral thecal sac on the right while two smaller cyst on the left remained stable...
October 11, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29025606/does-routine-carpal-tunnel-release-during-fixation-of-distal-radius-fractures-improve-outcomes
#3
Antonio Medici, Luigi Meccariello, Giuseppe Rollo, Giancarlo De Nigris, Steven James Mccabe, Pedrag Grubor, Gabriele Falzarano
OBJECTIVE: This case-control study was designed to test the hypothesis whether carpal tunnel release (CTR) during fixation of distal radius 23-C2 AO fractures improves outcomes. METHODS: Thirty-five consecutive patients who sustained distal radius fractures of the dominant hand participated in this study. Patients were allocated into two groups: (a) The ORIF + CTR (16 patients (11 males and 5 females)); (b) the ORIF and NOT CTR 19 patients (12 males and 7 females)...
October 2017: Injury
https://www.readbyqxmd.com/read/29021753/improving-the-robustness-of-electromyogram-pattern-recognition-for-prosthetic-control-by-a-postprocessing-strategy
#4
Xu Zhang, Xiangxin Li, Oluwarotimi Williams Samuel, Zhen Huang, Peng Fang, Guanglin Li
Electromyogram (EMG) contains rich information for motion decoding. As one of its major applications, EMG-pattern recognition (PR)-based control of prostheses has been proposed and investigated in the field of rehabilitation robotics for decades. These prostheses can offer a higher level of dexterity compared to the commercially available ones. However, limited progress has been made toward clinical application of EMG-PR-based prostheses, due to their unsatisfactory robustness against various interferences during daily use...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/29020054/a-novel-approach-for-automatic-visualization-and-activation-detection-of-evoked-potentials-induced-by-epidural-spinal-cord-stimulation-in-individuals-with-spinal-cord-injury
#5
Samineh Mesbah, Claudia A Angeli, Robert S Keynton, Ayman El-Baz, Susan J Harkema
Voluntary movements and the standing of spinal cord injured patients have been facilitated using lumbosacral spinal cord epidural stimulation (scES). Identifying the appropriate stimulation parameters (intensity, frequency and anode/cathode assignment) is an arduous task and requires extensive mapping of the spinal cord using evoked potentials. Effective visualization and detection of muscle evoked potentials induced by scES from the recorded electromyography (EMG) signals is critical to identify the optimal configurations and the effects of specific scES parameters on muscle activation...
2017: PloS One
https://www.readbyqxmd.com/read/29016480/revisiting-the-single-visit-protocol-for-determining-the-electromyographic-fatigue-threshold
#6
Fatin L Khan, Jordan M Lawal, Drew O Kapture, Joseph D Swingle, Moh H Malek
The electromyographic fatigue threshold (EMGFT) has been shown to demarcate between non-fatiguing and fatiguing exercise workloads. One potential limitation of incorporating the single EMGFT test in a clinical setting is the 2-min stage increment inherit to the protocol. In most rehabilitation clinics time with the client is limited and any testing procedures need to consider this factor. The purpose of this study, therefore, was to determine whether or not the estimation of the EMGFT is influenced by reducing the incremental stage to 1-min intervals...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28992936/-short-term-exercise-based-cardiac-rehabilitation-induced-changes-in-cardiorespiratory-mechanical-and-neuromuscular-responses-to-progressive-exercise-testing
#7
P-M Leprêtre, M Ghannem, S Delanaud, N Jaunet, L Gaillard, A Barnabé, T Porcher, T Weissland
Previous studies showed that changes in peak of oxygen uptake value (VO2peak) with training were poorly related to changes in Maximal Tolerated Power output (MTP) among patients with cardiovascular disease. This result could be due to a difference between cardiopulmonary adaptation to training and the skeletal muscle conditioning. OBJECTIVE: The aim of the study was to compare the responses to exercise training of electromyographic activities of vastus lateralis (rms-EMG) and respiratory parameters...
October 6, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28991045/caffeine-ingestion-attenuates-fatigue-induced-loss-of-muscle-torque-complexity
#8
Jamie Pethick, Samantha L Winter, Mark Burnley
The temporal structure, or complexity, of muscle torque output decreases with neuromuscular fatigue. The role of central fatigue in this process is unclear. PURPOSE: We tested the hypothesis that caffeine administration would attenuate the fatigue-induced loss of torque complexity. METHODS: Eleven healthy participants performed intermittent isometric contractions of the knee extensors to task failure at a target torque of 50% maximal voluntary contraction (MVC), with a 60% duty factor (6 s contraction, 4 s rest), 60 min after ingesting 6 mg·kg caffeine or a placebo...
October 3, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28988264/analysis-of-high-density-surface-emg-and-finger-pressure-in-the-left-forearm-of-violin-players-a-feasibility-study
#9
Paolo Cattarello, Roberto Merletti, Francesco Petracca
Wrist and finger flexor muscles of the left hand were evaluated using high-density surface EMG (HDsEMG) in 17 violin players. Pressure sensors also were mounted below the second string of the violin to evaluate, simultaneously, finger pressure. Electrode grid size was 110x70 mm (12x8 electrodes with interelectrode distance=10 mm and Ø=3 mm). The study objective was to observe the activation patterns of these muscles while the violinists sequentially played four notes--SI (B), DO# (C#), RE (D), MI (E)--at 2 bows/s (one bow up in 0...
September 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28972191/effects-of-acute-intermittent-hypoxia-on-hand-use-after-spinal-cord-trauma-a-preliminary-study
#10
Randy D Trumbower, Heather B Hayes, Gordon S Mitchell, Steven L Wolf, Victoria A Stahl
OBJECTIVE: To test the hypothesis that daily acute intermittent hypoxia (AIH) combined with hand opening practice improves hand dexterity, function, and maximum hand opening in persons with chronic, motor-incomplete, cervical spinal cord injury. METHODS: Six participants completed the double-blind, crossover study. Participants received daily (5 consecutive days) AIH (15 episodes per day: 1.5 minutes of fraction of inspired oxygen [FIo2] = 0.09, 1-minute normoxic intervals) followed by 20 repetitions of hand opening practice and normoxia (sham, FIo2 = 0...
September 29, 2017: Neurology
https://www.readbyqxmd.com/read/28970805/quadriceps-muscles-o2-extraction-and-emg-breakpoints-during-a-ramp-incremental-test
#11
Danilo Iannetta, Ahmad Qahtani, Guillaume Y Millet, Juan M Murias
Muscle deoxygenated breakpoint ([HHb]BP) has been found to be associated with other indices of exercise tolerance in the vastus lateralis (VL) muscle but not in the vastus medialis (VM) and rectus femoris (RF). Purpose: To investigate whether the [HHb]BP occurs also in the VM and RF muscles and whether or not it is associated with other physiological indices of exercise tolerance, such as the EMG threshold (EMGt) and the respiratory compensation point (RCP). Methods: Twelve young endurance trained participants performed maximal ramp incremental (RI) cycling tests (25-30 W·min(-1) increments)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28967406/effects-of-mouth-rehabilitation-with-removable-complete-dentures-on-stimulus-perception-and-the-electromyographic-activity-of-the-orbicularis-oris-muscle
#12
Fernanda P de Caxias, Daniela M Dos Santos, Marcelo C Goiato, Sandro B Bitencourt, Emily V F da Silva, Murilo C B Laurindo-Junior, Karina H L Turcio
STATEMENT OF PROBLEM: Many elderly individuals are rehabilitated with removable complete dentures, which require an initial adaptation period for both oral perception and the perioral muscles. Studies assessing the changes in stimulus perception and the electromyographic (EMG) activity of the orbicularis oris muscle shortly after conventional complete denture insertion are lacking. PURPOSE: The purpose of this clinical study was to evaluate the effect of mouth rehabilitation with removable complete dentures on stimulus perception and the EMG activity of the orbicularis oris muscle...
September 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28966227/childhood-onset-anti-3-hydroxy-3-methylglutaryl-coenzyme-a-reductase-anti-hmgcr-necrotizing-myopathy-needs-to-be-distinguished-from-muscular-dystrophy-a-case-study
#13
Yuka Hama, Madoka Mori-Yoshimura, Hirofumi Komaki, Shigeaki Suzuki, Hitoshi Kohsaka, Ichizo Nishino, Yuji Takahashi
A 24-year-old woman visited our hospital with a complaint of walking disability. She had no family history of consanguineous marriage, and her developmental history was unremarkable, with good physical performance just before the onset. At the age of 13, she developed difficulty in walking and visited a pediatrician. Her serum CK level was 10,000 IU/l and she was diagnosed with muscular dystrophy by muscle biopsy. At the age of 16, she became wheelchair dependent and was admitted to our hospital. Physical examination revealed diffuse muscle atrophy and proximal weakness, with no calf hypertrophy or selectivity of muscle involvement...
September 30, 2017: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/28961473/resolving-the-adverse-impact-of-mobility-on-myoelectric-pattern-recognition-in-upper-limb-multifunctional-prostheses
#14
Oluwarotimi Williams Samuel, Xiangxin Li, Yanjuan Geng, Mojisola Grace Asogbon, Peng Fang, Zhen Huang, Guanglin Li
Electromyogram pattern recognition (EMG-PR) based control for upper-limb prostheses conventionally focuses on the classification of signals acquired in a controlled laboratory setting. In such a setting, relatively stable and high performances are often reported because subjects could consistently perform muscle contractions corresponding to a targeted limb motion. Meanwhile the clinical implementation of EMG-PR method is characterized by degradations in stability and classification performances due to the disparities between the constrained laboratory setting and clinical use...
September 21, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28958035/sleep-wake-physiology-and-quantitative-eeg-analysis-of-the-neuroligin-3-knockout-rat-model-of-autism-spectrum-disorder
#15
Alexia M Thomas, Michael D Schwartz, Michael D Saxe, Thomas S Kilduff
Study Objectives: Neuroligin-3 (NLGN3) is one of many genes associated with autism spectrum disorder (ASD). Sleep dysfunction is highly prevalent in ASD, but has not been rigorously examined in ASD models. Here, we evaluated sleep/wake physiology and behavioral phenotypes of rats with genetic ablation of Nlgn3. Methods: Male Nlgn3 knockout (KO) and wild-type (WT) rats were assessed using a test battery for ASD-related behaviors and also implanted with telemeters to record the electroencephalogram (EEG), electromyogram (EMG), body temperature, and locomotor activity...
August 31, 2017: Sleep
https://www.readbyqxmd.com/read/28951360/-spinal-serotonergic-receptor-is-involved-in-descending-inhibition-of-cardiac-nociception-by-the-lateral-reticular-nucleus-in-rats
#16
Man Han, Xiao-Hua Liu, Jian-Qing DU
OBJECTIVE: To investigate the role of the lateral reticular nucleus (LRN) in descending inhibition of cardiac nociception in rats and the involvement of spinal serotonergic receptors in the descending inhibition. METHODS: Male SD rats were randomly divided into 5 groups, namely bradykinin (BK) group, BK + glutamate group, BK + methysergide group, BK + glutamate + methysergide group, and BK + glutamate + vehicle group. The rats received glutamate microinjection in the LRN combined with the intrathecal injection of serotonergic receptor antagonist methysergide, and the changes in the cardiacsomatic motor reflex induced by intrapericardial BK injection were monitored by observing electromyogram (EMG) responses of the dorsal spinotrapezius muscle; c-Fos expression in the spinal dorsal horn was also tested...
September 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28948938/optimal-spatio-temporal-filter-for-the-reduction-of-crosstalk-in-surface-electromyogram
#17
Luca Mesin
OBJECTIVE: Crosstalk can pose limitations to the applications of surface electromyogram (EMG). Its reduction can help in the identification of the activity of specific muscles. The selectivity of different spatial filters was tested in the literature both in simulations and experiments: their performances are affected by many factors (e.g., anatomy, conduction properties of the tissues and dimension/location of the electrodes); moreover, they reduce crosstalk by decreasing the detection volume, recording data that represent only the activity of a small portion of the muscle of interest...
September 26, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28946998/preserving-privacy-of-online-digital-physiological-signals-using-blind-and-reversible-steganography
#18
Hung-Jr Shiu, Bor-Sing Lin, Chien-Hung Huang, Pei-Ying Chiang, Chin-Laung Lei
BACKGROUND AND OBJECTIVE: Physiological signals such as electrocardiograms (ECG) and electromyograms (EMG) are widely used to diagnose diseases. Presently, the Internet offers numerous cloud storage services which enable digital physiological signals to be uploaded for convenient access and use. Numerous online databases of medical signals have been built. The data in them must be processed in a manner that preserves patients' confidentiality. METHODS: A reversible error-correcting-coding strategy will be adopted to transform digital physiological signals into a new bit-stream that uses a matrix in which is embedded the Hamming code to pass secret messages or private information...
November 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28946515/effects-of-biofeedback-versus-switch-triggered-functional-electrical-stimulation-on-sciatica-related-foot-drop
#19
Dragos Petrica Sardaru, Daniela Matei, Dan Zaharia-Kezdi, Liviu Pendefunda
BACKGROUND: Sciatica-related Foot Drop is a peripheral nervous condition that produces a loss of power in the ankle dorsiflexion muscles. Functional electrical stimulation is a modality of electrical stimulation that produces muscle contraction in a functional movement of the limb. This technique was utilized with positive effects in central nervous afflictions but it is not known whether or not it has any influence in motor recovery following peripheral nervous system problems. This study aims to clarify the effects of functional electrical stimulation on foot drop caused by peripheral nerve compression resulting from lumbar disc herniation...
September 8, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28944715/balance-training-enhances-motor-coordination-during-a-perturbed-side-step-cutting-task
#20
Anderson Souza Oliveira, Priscila de Brito Silva, Morten Enemark Lund, Dario Farina, Uwe Gustav Kersting
Study Design Controlled laboratory study. Background Balance training (BTR) may improve motor coordination, however little is known about the changes in motor coordination during unexpected perturbations to postural control following BTR. Objectives To study the effects of BTR on motor coordination and knee mechanics during perturbed side-step cutting maneuvers in healthy adults. Methods Twenty-six healthy men were randomly assigned to a training group (TG) or control (CG). Before BTR, subjects performed unperturbed, 90° side-step cutting maneuvers and one unexpected perturbed cut (10-cm translation of a moveable platform)...
September 23, 2017: Journal of Orthopaedic and Sports Physical Therapy
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