Estimating electromyographic and heart rate fatigue thresholds from a single treadmill test.

abstract：:McArdle disease is an autosomal recessive muscle glycogenosis. In the typical clinical presentation, only exercise-related symptoms are noted. Nevertheless, permanent weakness may occur, usually late in life. In this study we report on the clinical and genetic features of fixed muscle weakness in McArdle disease. Amon...

journal_title：Muscle & nerve

authors： Nadaj-Pakleza AA,Vincitorio CM,Laforêt P,Eymard B,Dion E,Teijeira S,Vietez I,Jeanpierre M,Navarro C,Stojkovic T

更新日期：2009-09-01 00:00:00

abstract：INTRODUCTION:The main goal of this study was to determine the contribution of the anterior forearm muscles to the compound muscle action potential (CMAP) recorded from the extensor digitorum (ED) after proximal stimulation. METHODS:Twenty-one healthy volunteers and 114 patients with compressive and traumatic radial ne...

journal_title：Muscle & nerve

authors： Khodulev VI,Nechipurenko NI,Shcharbina NY

更新日期：2020-09-01 00:00:00

abstract：INTRODUCTION:We determined whether instrumenting timed functional tasks with wireless inertial motion sensors were responsive to facioscapulohumeral muscular dystrophy (FSHD) progression and movement pattern changes. METHODS:Ten individuals who were clinically affected with genetically confirmed FSHD, mean age 54 year...

journal_title：Muscle & nerve

authors： Statland JM,Karanevich A,Bruetsch A,Huisinga J

更新日期：2019-11-01 00:00:00

abstract：INTRODUCTION:Far-field potentials (FFPs) from muscles other than the abductor digiti minimi (ADM) may interfere with motor unit number estimation (MUNE) from that muscle. METHODS:We identified the origin of each surface motor unit potential (SMUP) during hypothenar MUNE using the multiple point stimulation method in 2...

journal_title：Muscle & nerve

authors： Kawamura Y,Sonoo M,Higashihara M,Chiba T,Hatanaka Y

更新日期：2013-08-01 00:00:00

abstract：:With the exception of thymectomy, immune modulatory treatment strategies and clinical trials in myasthenia gravis over the past 50 y were mainly borrowed from experience in other nonneurologic autoimmune disorders. The current experimental therapy paradigm has significantly changed such that treatments directed agains...

journal_title：Muscle & nerve

authors： Habib AA,Ahmadi Jazi G,Mozaffar T

更新日期：2020-11-01 00:00:00

abstract：:We applied the singular value decomposition (SVD) method to study single motor unit firing patterns. Two projects were carried out: (1) a computer simulation study to confirm the meanings of two SVD parameters, the eigenvalue corresponding to the positive-slope eigenvector (PEV) and that corresponding to the negative-...

journal_title：Muscle & nerve

authors： Sun TY,Chen JJ,Lin TS

更新日期：2000-07-01 00:00:00

abstract：:Protein synthesis in soleus and extensor digitorum longus (EDL) muscles was measured in vitro to test the hypothesis that the lack of muscle protein accumulation in dystrophic conditions could be caused by a reduced sensitivity to insulin. We demonstrate that physiological insulin concentrations stimulate protein synt...

journal_title：Muscle & nerve

authors： Ballard FJ,Nield MK,Tomas FM

更新日期：1983-09-01 00:00:00

abstract：INTRODUCTION:This case report focuses on identifying novel mutations in juvenile motor neuron disease and emphasizes the significance of whole exome sequencing (WES). METHODS:We report a 13-year-old Hispanic boy with rapidly progressive weakness, muscle atrophy, tremor, and tongue fasciculation, along with upper motor...

journal_title：Muscle & nerve

authors： Agarwal S,Potocki L,Collier TR,Woodbury SL,Adesina AM,Jones J,Lotze TE

更新日期：2016-04-01 00:00:00

abstract：:Reliable unipedal balance is fundamental to safe ambulation. Accordingly, older persons with peripheral neuropathy (PN), who are at increased risk for falls, demonstrate impaired unipedal balance. To explore the relationship between afferent function and unipedal balance, frontal plane proprioceptive thresholds at the...

journal_title：Muscle & nerve

authors： Son J,Ashton-Miller JA,Richardson JK

更新日期：2009-02-01 00:00:00

abstract：:At least 50 disease-causing mutations in the skeletal muscle voltage-gated chloride channel gene (CLCN1), almost all of which originate from Caucasian families, have been identified. We investigated a Japanese family with Thomsen's myotonia congenita that included 16 affected individuals (8 men and 8 women) through fi...

journal_title：Muscle & nerve

authors： Sasaki R,Ito N,Shimamura M,Murakami T,Kuzuhara S,Uchino M,Uyama E

更新日期：2001-03-01 00:00:00

abstract：INTRODUCTION:Contradictory reports of the myosin heavy chain (MHC) composition of adult human suprahyoid muscles leave unresolved the extent to which these muscles express developmental and unconventional MHC. METHODS:By immunohistochemistry, separation sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PA...

journal_title：Muscle & nerve

authors： Luo Q,Douglas M,Burkholder T,Sokoloff AJ

更新日期：2014-04-01 00:00:00

abstract：:Ischemia-reperfusion injury is implicated in the failure of free flap and replant surgeries and is associated with the pathogenesis of a wide variety of clinical diseases including stroke, myocardial infarction, spinal injury, and compartment syndromes. We used a skeletal muscle flap model to test if the induction of ...

journal_title：Muscle & nerve

authors： Lille S,Su CY,Schoeller T,Suchy H,Lyons S,Russell RC,Neumeister M,Lai CC

更新日期：1999-03-01 00:00:00

abstract：:Voluntary and stimulation single-fiber electromyography were performed in the extensor digitorum communis muscle of 15 myasthenic patients. The increase in mean and individual mean consecutive difference as well as the proportion of blocking in the volitional activation were greater than in the stimulation method. The...

journal_title：Muscle & nerve

authors： Murga L,Sánchez F,Menéndez C,Castilla JM

更新日期：1998-08-01 00:00:00

abstract：:Clinicians who use electromyographic (EMG) signals to help determine the presence or absence of abnormality in a muscle often, with varying degrees of success, evaluate sets of motor unit potentials (MUPs) qualitatively and/or quantitatively to characterize the muscle in a clinically meaningful way. The resulting musc...

journal_title：Muscle & nerve

authors： Pino LJ,Stashuk DW,Boe SG,Doherty TJ

更新日期：2010-01-01 00:00:00

abstract：:Electrophysiological studies were performed on the ventral tail nerve of adult rats following intraperitoneal injection of a crude extract of ciguatoxin from known toxic fish flesh. Ciguatoxin induced significant slowing of both mixed and motor nerve conduction velocities and also significant reductions in both motor ...

journal_title：Muscle & nerve

authors： Cameron J,Flowers AE,Capra MF

更新日期：1993-07-01 00:00:00

abstract：:The site of the recording electrode influences the amplitude of the compound muscle action potential (CMAP) and its variation over a length of nerve. The effects of large electrodes on this source of intraindividual variability were assessed. Right median nerves of 20 healthy subjects were studied, and recordings made...

journal_title：Muscle & nerve

authors： van Dijk JG,Tjon-a-Tsien A,van der Kamp W

更新日期：1995-01-01 00:00:00

abstract：:Twenty-four adult albino rats were injected with tetanus toxin into the right gastrocnemius muscle and then subjected to sustained dorsiflexion of the right ankle joint for 2 to 14 days. Histologic examinations of the soleus after this procedure showed myopathic changes, characterized by variations in fiber diameters,...

journal_title：Muscle & nerve

authors： Mizuno Y,Chou SM

更新日期：1990-10-01 00:00:00

abstract：:Mitochondrial trifunctional protein (TFP) deficiency is a rare disorder of the fatty acid beta-oxidation cycle with heterogeneous phenotypes and occurs secondary to either alpha- or beta-subunit mutations. We characterized the neuromyopathic phenotype of TFP deficiency through adolescence or adulthood in 11 patients, ...

journal_title：Muscle & nerve

authors： Spiekerkoetter U,Bennett MJ,Ben-Zeev B,Strauss AW,Tein I

更新日期：2004-01-01 00:00:00

abstract：:Ultrasound (US) technique was applied to measure the thickness, cross-sectional area (CSA), and internal structure of the quadriceps muscle in 70- to 80-year-old endurance and power athletes and untrained men. Isometric knee extension strength was higher in the power athletes than in the other groups. The mean values ...

journal_title：Muscle & nerve

authors： Sipilä S,Suominen H

更新日期：1991-06-01 00:00:00

abstract：:There is evidence that growth hormone may be related to the progression of weakness in Duchenne dystrophy. We conducted a 12-month controlled trial of mazindol, a putative growth hormone secretion inhibitor, in 83 boys with Duchenne dystrophy. Muscle strength, contractures, functional ability and pulmonary function we...

journal_title：Muscle & nerve

authors： Griggs RC,Moxley RT 3rd,Mendell JR,Fenichel GM,Brooke MH,Miller PJ,Mandel S,Florence J,Schierbecker J,Kaiser KK

更新日期：1990-12-01 00:00:00

abstract：:Body weight-supported treadmill (BWST) training has been shown to improve ambulatory capacity in persons with a spinal cord injury (SCI); however, the effect that BWST training has on skeletal muscle phenotype is unknown. We aimed to determine whether 6 months (three sessions/week) of BWST training in neurologically s...

journal_title：Muscle & nerve

authors： Stewart BG,Tarnopolsky MA,Hicks AL,McCartney N,Mahoney DJ,Staron RS,Phillips SM

更新日期：2004-07-01 00:00:00

abstract：:In a woman with a slowly progressive adult onset proximal myopathy, muscle biopsy showed storage of PAS positive material in type 1 fibers. This material consisted of a branched chain polysaccharide associated with a mucoprotein. No abnormality of glycogen-pathway enzymes was detected. This suggested that this polysac...

journal_title：Muscle & nerve

authors： Thompson AJ,Swash M,Cox EL,Ingram DA,Gray A,Schwartz MS

更新日期：1988-04-01 00:00:00

abstract：:Normal motor units (MUs) were simulated and their architecture altered to simulate the changes produced by myopathy. The concentric needle electromyographic recordings of motor unit action potentials (MUAPs) from the MUs were then also simulated. These simulated MUAPs showed features that are seen in myopathy: normal ...

journal_title：Muscle & nerve

authors： Nandedkar SD,Sanders DB

更新日期：1989-03-01 00:00:00

abstract：INTRODUCTION:Stroke-related changes in maximal dynamic hip flexor muscle fatigability may be more relevant functionally than isometric hip flexor fatigability. METHODS:Ten chronic stroke survivors performed 5 sets of 30 hip flexion maximal dynamic voluntary contractions (MDVC). A maximal isometric voluntary contractio...

journal_title：Muscle & nerve

authors： Kuhnen HR,Rybar MM,Onushko T,Doyel RE,Hunter SK,Schmit BD,Hyngstrom AS

更新日期：2015-03-01 00:00:00

abstract：:Cultured human skin fibroblasts from 9 patients with Duchenne muscular dystrophy (DMD) and 8 normal age- and sex-matched controls were examined for creatine kinase (CK) activity. Both the normal and the DMD fibroblasts were found to have significant levels of CK activity (approximately 10 x 10(-3) IU per milligram of ...

journal_title：Muscle & nerve

authors： Davis MH,Cappel R,Vester JW,Samaha FJ,Gruenstein E

更新日期：1982-01-01 00:00:00

abstract：:Normative values of muscle fiber conduction velocity depend on the conditions in which conduction velocity is measured due to the velocity recovery function (VRF) of muscle fibers. In this study the VRF of the compound muscle action potential (CMAP) was assessed following doublet and triplet stimulation in order to in...

journal_title：Muscle & nerve

authors： Kamavuako EN,Hennings K,Farina D

更新日期：2007-08-01 00:00:00

abstract：:In this study some particular and puzzling aspects of amyotrophic lateral sclerosis (ALS) are discussed, with an emphasis on the role of neocortical evolution. Other issues explored include the nature of the clinical deficit in ALS; anatomical and evolutionary aspects of the neocortex, motor cortex, and corpus callosu...

journal_title：Muscle & nerve

authors： Eisen A

更新日期：2009-08-01 00:00:00

abstract：INTRODUCTION:Surface electromyography (SEMG) allows objective assessment and guides selection of appropriate treatment in focal hand dystonia (FHD). METHODS:Sixteen-channel SEMG obtained during different phases of a writing task was used to study timing, activation patterns, and spread of muscle contractions in FHD co...

journal_title：Muscle & nerve

authors： Sivadasan A,Sanjay M,Alexander M,Devasahayam SR,Srinivasa BK

更新日期：2013-09-01 00:00:00

abstract：INTRODUCTION:Pneumothorax is a potentially serious complication of electromyography (EMG). Data on the frequency of pneumothorax after EMG are lacking. The purpose of this study was to determine the frequency, timing, and risk factors for iatrogenic pneumothorax after EMG. METHODS:Cases of pneumothorax after EMG were ...

journal_title：Muscle & nerve

authors： Kassardjian CD,O'gorman CM,Sorenson EJ

更新日期：2016-04-01 00:00:00

abstract：INTRODUCTION:Premotor potentials (PMPs) precede compound muscle action potentials evoked from the second lumbrical muscle after median nerve stimulation. Although PMP has been identified as a median sensory nerve action potential, few reports have documented the significance of PMP parameters for diagnosing carpal tunn...

journal_title：Muscle & nerve

authors： Kodama M,Sasao Y,Tochikura M,Kasahara T,Koyama Y,Aono K,Fujii C,Hanayama K,Takahashi O,Kobayashi Y,Masakado Y

更新日期：2012-12-01 00:00:00