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https://www.readbyqxmd.com/read/28432901/neuromuscular-rate-of-force-development-deficit-in-parkinson-disease
#1
Kelley G Hammond, Ronald F Pfeiffer, Mark S LeDoux, Brian K Schilling
BACKGROUND: Bradykinesia and reduced neuromuscular force exist in Parkinson disease. The interpolated twitch technique has been used to evaluate central versus peripheral manifestations of neuromuscular strength in healthy, aging, and athletic populations, as well as moderate to advanced Parkinson disease, but this method has not been used in mild Parkinson disease. This study aimed to evaluate quadriceps femoris rate of force development and quantify potential central and peripheral activation deficits in individuals with Parkinson disease...
April 11, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28432750/effect-of-feeding-two-rrr-alpha-tocopherol-formulations-on-serum-cerebrospinal-fluid-and-muscle-alpha-tocopherol-concentrations-in-horses-with-subclinical-vitamin-e-deficiency
#2
J C Brown, S J Valberg, M Hogg, C J Finno
BACKGROUND: Alpha tocopherol (α-TP) supplementation is recommended for the prevention of various equine neuromuscular disorders. Formulations available include RRR-α-TP acetate powder and a more expensive but rapidly water-dispersible liquid RRR-α-TP (WD α-TP). A cost-effective means to rapidly increase serum and CSF α-TP with WD-α-TP and then sustain concentrations with RRR-α-TP acetate has not been reported. OBJECTIVES: To evaluate serum, CSF and muscle α-TP concentrations in an 8-week dosing regimen where horses were transitioned from WD RRR-α-TP to RRR-α-TP acetate...
April 22, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28432606/neuromuscular-electrostimulation-a-new-therapeutic-option-to-improve-radio-cephalic-arteriovenous-fistula-maturation-in-end-stage-chronic-kidney-disease-patients
#3
Lucia Martinez, Vicent Esteve, Montserrat Yeste, Vicent Artigas, Secundino Llagostera
BACKGROUND: Radio-cephalic arteriovenous fistula (RCAVF) is the gold standard vascular access for end-stage chronic kidney disease patients. Exercises after arteriovenous fistula (AVF) creation improve maturation. No articles are published regarding neuromuscular electrostimulation (NMES) in AVF maturation. OBJECTIVES: To assess the usefulness of a NMES programme on RCAVF maturation process. METHODS: An 8-week single-centre prospective study...
April 21, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28432448/resistance-to-radial-expansion-limits-muscle-strain-and-work
#4
E Azizi, A R Deslauriers, N C Holt, C E Eaton
The collagenous extracellular matrix (ECM) of skeletal muscle functions to transmit force, protect sensitive structures, and generate passive tension to resist stretch. The mechanical properties of the ECM change with age, atrophy, and neuromuscular pathologies, resulting in an increase in the relative amount of collagen and an increase in stiffness. Although numerous studies have focused on the effect of muscle fibrosis on passive muscle stiffness, few have examined how these structural changes may compromise contractile performance...
April 21, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28432420/sex-differences-in-neuromuscular-function-after-repeated-eccentric-contractions-of-the-knee-extensor-muscles
#5
Andrea Lee, Jake Baxter, Claire Eischer, Matt Gage, Sandra Hunter, Tejin Yoon
PURPOSE: This study examined the mechanisms for force and power reduction during and up to 48 h after maximal eccentric contractions of the knee extensor muscles in young men and women. METHODS: 13 men (22.8 ± 2.6 years) and 13 women (21.6 ± 2.2 years) performed 150 maximal effort eccentric contractions (5 sets of 30) with the knee extensor muscles at 60° s(-1). Maximal voluntary isometric contractions (MVIC) and maximal voluntary concentric contractions (MVCC) were performed before and after the 150 eccentric contractions...
April 21, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28431606/screening-for-cognitive-and-behavioural-impairment-in-amyotrophic-lateral-sclerosis-frequency-of-abnormality-and-effect-on-survival
#6
Zhouwei Xu, Ashwag Rafea S Alruwaili, Robert David Henderson, Pamela Ann McCombe
OBJECTIVE: To screen for cognitive and behavioural impairment in people with amyotrophic lateral sclerosis (ALS) and controls with neuromuscular disease and to correlate these with clinical features. METHODS: 108 people with ALS and 60 controls with other neuromuscular diseases were recruited and assessed with the Addenbrooke's cognitive examination-III (ACE-III), the frontal assessment battery (FAB), and the executive function component of the Edinburgh cognitive and behavioural ALS screen (ECAS)...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431604/a-reappraisal-of-diagnostic-tests-for-myasthenia-gravis-in-a-large-asian-cohort
#7
Yew Long Lo, Raymond P Najjar, Kelvin Y Teo, Sharon L Tow, Jing Liang Loo, Dan Milea
BACKGROUND: Myasthenia gravis (MG) is a chronic autoimmune neuromuscular disease characterized by weakness of bodily skeletal muscles. Office-based diagnostic tests such as repetitive nerve stimulation (RNS), single fiber electromyography (SFEMG), and the ice test, are used to refine the differential clinical diagnosis of this disease. Evaluating the clinical sensitivity and specificity of these tests, however, may be confounded by lack of a gold standard, non-blinding, incorporation bias, use of non-representative populations and retrospective data...
May 15, 2017: Journal of the Neurological Sciences
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
#8
(no author information available yet)
No abstract text is available yet for this article.
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28428759/morphological-regeneration-and-functional-recovery-of-neuromuscular-junctions-after-tourniquet-induced-injuries-in-mouse-hindlimb
#9
Huiyin Tu, Dongze Zhang, Ryan M Corrick, Robert L Muelleman, Michael C Wadman, Yu-Long Li
Tourniquet application and its subsequent release cause serious injuries to the skeletal muscle, nerve, and neuromuscular junction (NMJ) due to mechanical compression and ischemia-reperfusion (IR). Monitoring structural and functional repair of the NMJ, nerve, and skeletal muscle after tourniquet-induced injuries is beneficial in exploring potential cellular and molecular mechanisms responsible for tourniquet-induced injuries, and for establishing effective therapeutic interventions. Here, we observed long-term morphological and functional changes of the NMJ in a murine model of tourniquet-induced hindlimb injuries...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28428630/hinge-deleted-igg4-blocker-therapy-for-acetylcholine-receptor-myasthenia-gravis-in-rhesus-monkeys
#10
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/28427544/what-s-the-secret-behind-the-benefits-of-whole-body-vibration-training-in-patients-with-copd-a-randomized-controlled-trial
#11
Rainer Gloeckl, Inga Jarosch, Ulrike Bengsch, Magdalena Claus, Tessa Schneeberger, Vasileios Andrianopoulos, Jeffrey W Christle, Wolfgang Hitzl, Klaus Kenn
BACKGROUND: Several studies have shown that whole-body vibration training (WBVT) improves exercise capacity in patients with severe COPD. The aim of this study was to investigate the determinants of improved exercise capacity following WBVT. METHODS: Seventy-four COPD patients (FEV1: 34 ± 9%predicted) were recruited during a 3-week inpatient pulmonary rehabilitation (PR) program. Conventional endurance and strength exercises were supplemented with self-paced dynamic squat training sessions (4bouts*2min, 3times/wk)...
May 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28427305/neuromechanical-adaptations-during-a-robotic-powered-exoskeleton-assisted-walking-session
#12
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/28426584/neuromuscular-monitoring-as-the-art-of-probability
#13
Mohamed Naguib, Franklin Dexter, Sorin J Brull
No abstract text is available yet for this article.
May 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28426513/evaluation-of-the-functional-movement-screen-and-a-novel-basketball-mobility-test-as-an-injury-prediction-tool-for-collegiate-basketball-players
#14
Colin W Bond, Jason C Dorman, Tryg O Odney, Scott J Roggenbuck, Steven W Young, Thayne A Munce
Identifying injury risk and implementing preventive measures can assist in reducing injury occurrence and may ultimately improve athletic performance. Improper movement patterns often contribute to musculoskeletal (MSK) injuries. The validity of the Functional Movement Screen (FMS™) as an injury prediction tool for athletes remains unclear. We designed the Basketball-Specific Mobility Test (BMT) to represent the neuromuscular demands of basketball and identify deficiencies that may be indicative of greater MSK injury risk while playing this sport...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28426509/log-transformed-emg-amplitude-power-output-relationship-single-leg-knee-extensor-versus-single-leg-cycle-ergometry
#15
Eric B Noble, Joshua M Pilarski, Harshal K Vora, Jorge M Zuniga, Moh H Malek
Comparing and contrasting motor unit recruitment and activation for the same muscles for multiple versus single-joint exercise may provide a better understanding of neuromuscular fatigue. The purpose of this study, therefore, is to compare the slope and y-intercept terms for the three superficial quadriceps femoris (vastus lateralis, rectus femoris, and vastus medialis) muscles derived from the log-transformed EMG amplitude-power output relationship between the single-leg knee-extensor ergometry and the single-leg cycle ergometry...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28424583/a-rodent-model-of-dynamic-facial-reanimation-using-functional-electrical-stimulation
#16
Mark A Attiah, Julius de Vries, Andrew G Richardson, Timothy H Lucas
Facial paralysis can be a devastating condition, causing disfiguring facial droop, slurred speech, eye dryness, scarring and blindness. This study investigated the utility of closed-loop functional electric stimulation (FES) for reanimating paralyzed facial muscles in a quantitative rodent model. The right buccal and marginal mandibular branches of the rat facial nerve were transected for selective, unilateral paralysis of whisker muscles. Microwire electrodes were implanted bilaterally into the facial musculature for FES and electromyographic (EMG) recording...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28424375/mitochondria-a-central-target-for-sex-differences-in-pathologies
#17
REVIEW
Renée Ventura-Clapier, Maryline Moulin, Jérôme Piquereau, Christophe Lemaire, Mathias Mericskay, Vladimir Veksler, Anne Garnier
It is increasingly acknowledged that a sex and gender specificity affects the occurrence, development, and consequence of a plethora of pathologies. Mitochondria are considered as the powerhouse of the cell because they produce the majority of energy-rich phosphate bonds in the form of adenosine tri-phosphate (ATP) but they also participate in many other functions like steroid hormone synthesis, reactive oxygen species (ROS) production, ionic regulation, and cell death. Adequate cellular energy supply and survival depend on mitochondrial life cycle, a process involving mitochondrial biogenesis, dynamics, and quality control via mitophagy...
May 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28422525/soccer-match-play-represents-an-important-component-of-the-power-training-stimulus-in-premier-league-players
#18
Ryland Morgans, Rocco Di Michele, Barry Drust
PURPOSE: Competitive match-play is a dominant component of the physical load completed by soccer players within a training micro-cycle. Characterising the temporal disruption in homeostasis that follows exercise may provide some insight into the potential for match-play to elicit an adaptive response. METHODS: Countermovement jump (CMJ) performance was characterised 3 days post-match for 15 outfield players from an English Premier League soccer team (age: 25.8 ± 4...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28422078/antivenom-for-neuromuscular-paralysis-resulting-from-snake-envenoming
#19
REVIEW
Anjana Silva, Wayne C Hodgson, Geoffrey K Isbister
Antivenom therapy is currently the standard practice for treating neuromuscular dysfunction in snake envenoming. We reviewed the clinical and experimental evidence-base for the efficacy and effectiveness of antivenom in snakebite neurotoxicity. The main site of snake neurotoxins is the neuromuscular junction, and the majority are either: (1) pre-synaptic neurotoxins irreversibly damaging the presynaptic terminal; or (2) post-synaptic neurotoxins that bind to the nicotinic acetylcholine receptor. Pre-clinical tests of antivenom efficacy for neurotoxicity include rodent lethality tests, which are problematic, and in vitro pharmacological tests such as nerve-muscle preparation studies, that appear to provide more clinically meaningful information...
April 19, 2017: Toxins
https://www.readbyqxmd.com/read/28420958/electrical-stimulation-of-afferent-pathways-for-the-suppression-of-pathological-tremor
#20
Jakob L Dideriksen, Christopher M Laine, Strahinja Dosen, Silvia Muceli, Eduardo Rocon, José L Pons, Julian Benito-Leon, Dario Farina
Pathological tremors are involuntary oscillatory movements which cannot be fully attenuated using conventional treatments. For this reason, several studies have investigated the use of neuromuscular electrical stimulation for tremor suppression. In a recent study, however, we found that electrical stimulation below the motor threshold also suppressed tremor, indicating involvement of afferent pathways. In this study, we further explored this possibility by systematically investigating how tremor suppression by afferent stimulation depends on the stimulation settings...
2017: Frontiers in Neuroscience
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