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https://www.readbyqxmd.com/read/29789413/best-protocol-for-the-sit-to-stand-test-in-subjects-with-copd
#1
Andrea A Morita, Gianna W Bisca, Felipe V C Machado, Nidia A Hernandes, Fabio Pitta, Vanessa S Probst
BACKGROUND: Different protocols for the sit-to-stand test (STS) are available for assessing functional capacity in COPD. We sought to correlate each protocol of the STS (ie, the 5-repetition [5-rep STS], the 30-s STS, and the 1-min STS) with clinical outcomes in subjects with COPD. We also aimed to compare the 3 protocols of the STS, to verify their association and agreement, and to verify whether the 3 protocols are able to predict functional exercise capacity and physical activity in daily life (PADL)...
May 22, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29787475/isometric-versus-dynamic-measurements-of-fatigue-does-age-matter-a-meta-analysis
#2
Renata L Krüger, Saied Jalal Aboodarda, Pierre Samozino, Charles L Rice, Guillaume Y Millet
PURPOSE: The assessment of power changes after fatiguing exercise provides important additional information about neuromuscular function compared to traditional isometric measurements, especially when exploring age-related changes in fatigability. Therefore, the aim of this review was to explore the effects of age on neuromuscular fatigue (NMF) when measured in isometric compared with dynamic contractions. The importance of central and peripheral mechanisms contributing to age-related NMF were discussed...
May 22, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29786953/iatrogenic-botulism-outbreak-in-egypt-due-to-a-counterfeit-botulinum-toxin-a-preparation-a-descriptive-series-of-patient-features-and-outcome
#3
Eman Abdel Monaem Abdel Rashid, Nashwa Mohamed El-Mahdy, Huda Shehata Kharoub, Ahmed Salah Gouda, Naglaa Ahmed ElNabarawy, Bruno Mégarbane
Iatrogenic botulism resulting from the substantial increase in use of botulinum neurotoxin type-A (BoNT-A) treatment is rarely reported. We aimed to describe a large iatrogenic botulism outbreak in Egypt in June-July 2017. Nine patients developed botulism after receiving intramuscular injections of BoNT-A (dose: 200-300 IU) to treat cerebral palsy (N=7), spastic dystonia (N=1), and hyperhidrosis (N=1). Detailed findings were available in 5/9 cases. Patients were admitted to the hospital 5-10 days after the BoNT-A injection...
May 22, 2018: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29774167/complete-hypokalemic-quadriparesis-as-a-first-presentation-of-sj%C3%A3-gren-syndrome
#4
Jason An, Branko Braam
Rationale: We hope to increase awareness that hypokalemic paralysis may be the first presentation of Sjögren syndrome, for which potassium-sparing diuretics can be an effective adjunct to potassium replenishment. Presenting concerns: A 73-year-old female presented to a peripheral hospital with quadriparesis and a critically low serum potassium of 1.6 mmol/L with U waves on the electrocardiogram (ECG). The initial arterial blood gas showed a pH of 7.19, bicarbonate of 13 mEq/L, and a CO2 of 35 mm Hg...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29759891/the-putative-role-of-oxidative-stress-and-inflammation-in-the-pathophysiology-of-sleep-dysfunction-across-neuropsychiatric-disorders-focus-on-chronic-fatigue-syndrome-bipolar-disorder-and-multiple-sclerosis
#5
REVIEW
Gerwyn Morris, Brendon Stubbs, Cristiano A Köhler, Ken Walder, Anastasiya Slyepchenko, Michael Berk, André F Carvalho
Sleep and circadian abnormalities are prevalent and burdensome manifestations of diverse neuro-immune diseases, and may aggravate the course of several neuropsychiatric disorders. The underlying pathophysiology of sleep abnormalities across neuropsychiatric disorders remains unclear, and may involve the inter-play of several clinical variables and mechanistic pathways. In this review, we propose a heuristic framework in which reciprocal interactions of immune, oxidative and nitrosative stress, and mitochondrial pathways may drive sleep abnormalities across potentially neuroprogressive disorders...
April 4, 2018: Sleep Medicine Reviews
https://www.readbyqxmd.com/read/29758055/active-recovery-affects-the-recovery-of-the-corticospinal-system-but-not-of-muscle-contractile-properties
#6
Louis-Solal Giboin, Ehsan Amiri, Raphael Bertschinger, Markus Gruber
PURPOSE: Active recovery is often used by athletes after strenuous exercise or competition but its underlying mechanisms are not well understood. We hypothesized that active recovery speeds-up recovery processes within the muscle and the central nervous system (CNS). METHODS: We assessed muscular and CNS recovery by measuring the voluntary activation (VA) in the vastus lateralis muscle with transcranial magnetic stimulation (VATMS) and peripheral nerve stimulation (VAPNS) during maximal voluntary contractions (MVC) of the knee extensors in 11 subjects...
2018: PloS One
https://www.readbyqxmd.com/read/29755590/wide-pulse-high-frequency-low-intensity-neuromuscular-electrical-stimulation-has-potential-for-targeted-strengthening-of-an-intrinsic-foot-muscle-a-feasibility-study
#7
Darren C James, Matthew C Solan, Katya N Mileva
Background: Strengthening the intrinsic foot muscles is a poorly understood and largely overlooked area. In this study, we explore the feasibility of strengthening m . abductor hallucis (AH) with a specific paradigm of neuromuscular electrical stimulation; one which is low-intensity in nature and designed to interleave physiologically-relevant low frequency stimulation with high-frequencies to enhance effective current delivery to spinal motoneurones, and enable a proportion of force produced by the target muscle to be generated from a central origin...
2018: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/29753556/pharmacotherapy-for-postural-tachycardia-syndrome
#8
REVIEW
Amanda J Miller, Satish R Raj
Postural tachycardia syndrome (POTS) is a disorder characterized by the presence of orthostatic symptoms (including lightheadedness, palpitations, nausea, dyspnea, and tremulousness) as well as excessive upright tachycardia. POTS predominantly affects women of childbearing age. Treating POTS involves a multi-faceted approach using non-pharmacological and pharmacological interventions. There are no pharmacological treatments that are currently United States Food and Drug Administration (FDA) approved for POTS due to lack of randomized controlled trials...
May 4, 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29750060/fascial-preadipocytes-another-missing-piece-of-the-puzzle-to-understand-fibromyalgia
#9
Bruno Bordoni, Fabiola Marelli, Bruno Morabito, Francesca Cavallaro, David Lintonbon
Fibromyalgia (FM) syndrome is a chronic condition causing pain, affecting approximately 0.5%-6% of the developed countries' population, and on average, 2% of the worldwide population. Despite the large amount of scientific literature available, the FM etiology is still uncertain. The diagnosis is based on the clinical presentation and the severity of the symptomatology. Several studies pointed out pathological alterations within the central nervous system, suggesting that FM could originate from a central sensitization of the pain processing centers...
2018: Open Access Rheumatology: Research and Reviews
https://www.readbyqxmd.com/read/29746792/the-modulation-of-corticospinal-excitability-and-inhibition-following-acute-resistance-exercise-in-males-and-females
#10
Christopher Latella, Ashlee Hendy, Dan Vanderwesthuizen, Wei-Peng Teo
OBJECTIVE: The acute responses to resistance training (RT) between males and females are poorly understood, especially from a neural perspective. Therefore, we aimed to compare the corticospinal and intracortical responses during fatigue and recovery following RT. METHODS: Twenty-two participants (12M, 10F) completed one-session of RT (3 × 12 repetition maximum) unilateral leg extensions with 60 s recovery. Single- and paired-pulse transcranial magnetic stimulation measured changes in the motor-evoked potential (MEP), corticospinal silent period (CSP), CSP/MEP ratio, and intracortical facilitation/inhibition (ICF, SICI)...
May 10, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29742284/associations-among-human-papillomavirus-inflammation-and-fatigue-in-patients-with-head-and-neck-cancer
#11
Canhua Xiao, Jonathan J Beitler, Kristin A Higgins, Toby Glazer, Linh Kha Huynh, Sudeshna Paul, Jennifer C Felger, Evanthia C Wommack, Nabil F Saba, Dong M Shin, Deborah W Bruner, Andrew H Miller
BACKGROUND: Human papillomavirus (HPV) infection has contributed to an increased incidence of squamous cell carcinoma of the head and neck (SCCHN). Fatigue is a major side effect of SCCHN and its treatment. However, to the authors' knowledge, the association between HPV and fatigue has not been examined to date, nor is it known whether HPV influences biological mechanisms of fatigue, including inflammation. METHODS: Patients with SCCHN who were without distant metastasis were assessed at baseline (pre-radiotherapy) and 1 month and 3 months postradiotherapy...
May 9, 2018: Cancer
https://www.readbyqxmd.com/read/29738677/greater-fatigability-in-knee-flexors-vs-knee-extensors-after-a-standardized-fatiguing-protocol
#12
Giuseppe Coratella, Sidney Grosprêtre, Philippe Gimenez, Laurent Mourot
The present study aimed to investigate the effects of a standardized fatiguing protocol on central and peripheral fatigue in knee-flexors and knee-extensors. Thirteen healthy men (age: 23 ± 3 years; height: 1.78 ± 0.09 m; body-mass: 73.6 ± 9.2 kg) volunteered for the present study. Maximal voluntary contraction (MVC), Electromyography (EMG) activity, voluntary activation level (VAL) as an index of central fatigue and twitch potentiation as an index of peripheral fatigue were measured before and after the fatiguing protocol...
May 8, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29725306/muscle-performance-investigated-with-a-novel-smart-compression-garment-based-on-pressure-sensor-force-myography-and-its-validation-against-emg
#13
Aaron Belbasis, Franz Konstantin Fuss
Muscle activity and fatigue performance parameters were obtained and compared between both a smart compression garment and the gold-standard, a surface electromyography (EMG) system during high-speed cycling in seven participants. The smart compression garment, based on force myography (FMG), comprised of integrated pressure sensors that were sandwiched between skin and garment, located on five thigh muscles. The muscle activity was assessed by means of crank cycle diagrams (polar plots) that displayed the muscle activity relative to the crank cycle...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29719113/a-phase-1-study-of-eribulin-mesylate-e7389-a-novel-microtubule-targeting-chemotherapeutic-agent-in-children-with-refractory-or-recurrent-solid-tumors-a-children-s-oncology-group-phase-1-consortium-study-advl1314
#14
Eric S Schafer, Rachel E Rau, Stacey Berg, Xiaowei Liu, Charles G Minard, David D'Adamo, Rachael Scott, Larisa Reyderman, Gresel Martinez, Sandhya Devarajan, Joel M Reid, Elizabeth Fox, Brenda J Weigel, Susan M Blaney
BACKGROUND: Eribulin mesylate is a novel anticancer agent that inhibits microtubule growth, without effects on shortening, and promotes nonproductive tubulin aggregate formation. We performed a phase 1 trial to determine the dose-limiting toxicities (DLTs), maximum tolerated or recommended phase 2 dose (MTD/RP2D), and pharmacokinetics (PK) of eribulin in children with refractory or recurrent solid (excluding central nervous system) tumors. METHODS: Eribulin was administered intravenously on days 1 and 8 in 21-day cycles...
May 2, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29719079/effects-of-ipsilateral-and-contralateral-fatigue-and-muscle-blood-flow-occlusion-on-the-complexity-of-knee-extensor-torque-output-in-humans
#15
Jamie Pethick, Samantha L Winter, Mark Burnley
NEW FINDINGS: In this study we show that the fatigue-induced loss of isometric torque complexity does not recover if the fatigued muscle's blood flow is occluded during recovery, suggesting a pivotal role for peripheral mechanisms in this effect. When the contralateral limb is fatigued, the complexity of isometric torque output is unaffected even if the contralateral limb's blood flow is occluded, which suggests neither central fatigue nor afferent feedback from ischaemic muscle influence the complexity of torque output in an otherwise fresh muscle...
May 2, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29718968/acute-attenuation-of-fatigue-after-sodium-bicarbonate-supplementation-does-not-manifest-into-greater-training-adaptations-after-10-weeks-of-resistance-training-exercise
#16
Jason C Siegler, Paul W M Marshall, Harrison Finn, Rebecca Cross, Kurt Mudie
PURPOSE: In two concurrent studies, we aimed to a) confirm the acute effect of 0.3 g·kg-1 body weight (BW) sodium bicarbonate (NaHCO3) supplementation on central and peripheral mechanisms associated with explosive power (Study 1) and b) determine whether chronic NaHCO3 supplementation would improve the adaptive response of the neuromuscular system during a 10-week resistance training program (Study 2). METHODS: Eight resistance trained participants volunteered after providing written consent...
2018: PloS One
https://www.readbyqxmd.com/read/29704398/the-effect-of-ipc-on-central-and-peripheral-fatiguing-mechanisms-in-humans-following-sustained-maximal-isometric-exercise
#17
Samuel L Halley, Paul Marshall, Jason C Siegler
NEW FINDINGS: What is the central question of this study? Does ischemic preconditioning (IPC) influence central and peripheral fatiguing mechanisms during sustained maximal isometric exercise? What is the main finding and its importance? Voluntary activation and pre- to post-exercise reductions in resting twitch torque values were unchanged by IPC. However, an effect on tissue oxygenation was observed within the IPC trials where greater concentrations of deoxyhaemoglobin were recorded with concurrent upward trends of total haemoglobin concentrations...
April 28, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29703851/efficacy-and-safety-of-faecal-microbiota-transplantation-in-patients-with-psoriatic-arthritis-protocol-for-a-6-month-double-blind-randomised-placebo-controlled-trial
#18
Maja Skov Kragsnaes, Jens Kjeldsen, Hans Christian Horn, Heidi Lausten Munk, Finn Moeller Pedersen, Hanne Marie Holt, Jens Kristian Pedersen, Dorte Kinggaard Holm, Henning Glerup, Vibeke Andersen, Ulrich Fredberg, Karsten Kristiansen, Robin Christensen, Torkell Ellingsen
INTRODUCTION: An unbalanced intestinal microbiota may mediate activation of the inflammatory pathways seen in psoriatic arthritis (PsA). A randomised, placebo-controlled trial of faecal microbiota transplantation (FMT) infused into the small intestine of patients with PsA with active peripheral disease who are non-responsive to methotrexate (MTX) treatment will be conducted. The objective is to explore clinical aspects associated with FMT performed in patients with PsA. METHODS AND ANALYSIS: This trial is a randomised, two-centre stratified, double-blind (patient, care provider and outcome assessor), placebo-controlled, parallel-group study...
April 27, 2018: BMJ Open
https://www.readbyqxmd.com/read/29701482/neuromuscular-fatigue-during-repeated-sprint-exercise-underlying-physiology-and-methodological-considerations
#19
Brandon W Collins, Gregory Ep Pearcey, Natasha C M Buckle, Kevin E Power, Duane C Button
Neuromuscular fatigue occurs when an individual's capacity to produce force or power is impaired. Repeated sprint exercise requires an individual to physically exert themselves at near-maximal to maximal capacity for multiple short duration bouts, is extremely taxing on the neuromuscular system and consequently leads to the rapid development of neuromuscular fatigue. During repeated sprint exercise the development of neuromuscular fatigue is underlined by a combination of central and peripheral fatigue. However, there are a number of methodological considerations that complicate the quantification of the development of neuromuscular fatigue...
April 27, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29694270/higher-incidence-rates-of-comorbidities-in-patients-with-psoriatic-arthritis-compared-with-the-general-population-using-u-s-administrative-claims-data
#20
Jeffrey Kaine, Xue Song, Gilwan Kim, Peter Hur, Jacqueline B Palmer
BACKGROUND: Psoriatic arthritis (PsA) is associated with multiple comorbid conditions, including cardiovascular (CV) comorbidities that impose a considerable burden on patients. Effective management of PsA requires an understanding of comorbidity profiles. OBJECTIVE: To compare the frequency and incidence rates of comorbidities and hospitalizations among newly diagnosed PsA patients and a matched general population without PsA, using large national claims databases in the United States...
April 25, 2018: Journal of Managed Care & Specialty Pharmacy
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