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https://www.readbyqxmd.com/read/29679247/neuromuscular-and-electromechanical-properties-of-ultra-power-athletes-the-traceurs
#1
Sidney Grosprêtre, Philippe Gimenez, Alain Martin
PURPOSE: Practising a power-type activity over years can shape the neuromuscular profile of athletes. This study aimed at comparing the neuromuscular profile of a non-trained group (NT, n = 10) to power athletes practising Parkour (= traceurs, group PK, n = 11), an activity consisting of jumping obstacles mostly in an urban landscape. METHODS: Maximal isometric plantar flexion force (MVC) and rate of torque development (RTD) were evaluated, and neuromuscular function of triceps surae muscles was assessed and compared between groups through the analysis of evoked potentials from posterior tibial nerve stimulation...
April 20, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29677339/systematic-misperceptions-of-3-d-motion-explained-by-bayesian-inference
#2
Bas Rokers, Jacqueline M Fulvio, Jonathan W Pillow, Emily A Cooper
People make surprising but reliable perceptual errors. Here, we provide a unified explanation for systematic errors in the perception of three-dimensional (3-D) motion. To do so, we characterized the binocular retinal motion signals produced by objects moving through arbitrary locations in 3-D. Next, we developed a Bayesian model, treating 3-D motion perception as optimal inference given sensory noise in the measurement of retinal motion. The model predicts a set of systematic perceptual errors, which depend on stimulus distance, contrast, and eccentricity...
March 1, 2018: Journal of Vision
https://www.readbyqxmd.com/read/29677200/empirical-mode-decomposition-processing-to-improve-multifocal-visual-evoked-potential-signal-analysis-in-multiple-sclerosis
#3
Luis de Santiago, Eva Sánchez-Morla, Román Blanco, Juan Manuel Miguel, Carlos Amo, Miguel Ortiz Del Castillo, Almudena López, Luciano Boquete
OBJECTIVE: To study the performance of multifocal-visual-evoked-potential (mfVEP) signals filtered using empirical mode decomposition (EMD) in discriminating, based on amplitude, between control and multiple sclerosis (MS) patient groups, and to reduce variability in interocular latency in control subjects. METHODS: MfVEP signals were obtained from controls, clinically definitive MS and MS-risk progression patients (radiologically isolated syndrome (RIS) and clinically isolated syndrome (CIS))...
2018: PloS One
https://www.readbyqxmd.com/read/29673574/carotid-contrast-enhanced-ultrasonography-and-multimodal-imaging-in-a-case-of-tipic-syndrome
#4
REVIEW
R El Nawar, N Villain, J-M Baud, M De Malherbe, F Pico
Transient perivascular inflammation of the carotid artery (TIPIC) syndrome, previously referred to as 'carotidynia', is an unclassified clinicoradiological entity associating atypical acute neck pain, eccentric perivascular infiltration on imaging and improvement of symptoms either spontaneously or with anti-inflammatory treatment. This case report presents a patient with TIPIC syndrome who underwent five different types of imaging modality, including contrast-enhanced ultrasonography (CEUS) of the carotids, and describes the CEUS appearances of TIPIC syndrome...
April 16, 2018: Revue Neurologique
https://www.readbyqxmd.com/read/29673176/a-new-model-for-optimal-mechanical-and-thermal-performance-of-cement-based-partition-wall
#5
Shiping Huang, Mengyu Hu, Yonghui Huang, Nannan Cui, Weifeng Wang
The prefabricated cement-based partition wall has been widely used in assembled buildings because of its high manufacturing efficiency, high-quality surface, and simple and convenient construction process. In this paper, a general porous partition wall that is made from cement-based materials was proposed to meet the optimal mechanical and thermal performance during transportation, construction and its service life. The porosity of the proposed partition wall is formed by elliptic-cylinder-type cavities. The finite element method was used to investigate the mechanical and thermal behaviour, which shows that the proposed model has distinct advantages over the current partition wall that is used in the building industry...
April 17, 2018: Materials
https://www.readbyqxmd.com/read/29671490/common-running-injuries-evaluation-and-management
#6
Michael J Arnold, Aaron L Moody
Running is a common form of exercise but predisposes athletes to several running-related injuries. Most running injuries are due to overuse and respond to conservative treatment. Tendinopathies in the patellar, Achilles, and hamstring tendons are common, and are primarily treated with eccentric exercise. Iliotibial band syndrome and patellofemoral pain syndrome are less common than patellar tendinopathy and are treated by strengthening exercises for the core and legs in addition to flexibility exercises. Acute hamstring strains and medial tibial stress syndrome require a period of relative rest, followed by stretching and graded return to activity...
April 15, 2018: American Family Physician
https://www.readbyqxmd.com/read/29669458/effects-of-dance-exergaming-on-depressive-symptoms-fear-of-falling-and-musculoskeletal-function-in-fallers-and-non-fallers-community-dewlling-older-women
#7
Elisângela Valevein Rodrigues, Luiza Herminia Gallo, Ana Tereza Bittencourt Guimarães, Jarbas Melo Filho, Bruna Cavon Luna, Anna Raquel Silveira Gomes
The aim of this study was to evaluate the effects of a pop dance exergaming protocol on fall risk factors-depressive symptoms, fear of falling and musculoskeletal function-in community-dwelling, older female fallers and non-fallers. There were 47 community-dwelling older women assigned to the Intervention Group [fallers (n=10, 69.8 ± 4.3 years); non-fallers (n = 12, 68.9 ± 3.3 years)] or the Control Group [fallers (n = 12, 73.6 ± 5.4 years); non-fallers (n = 13, 68.7 ± 4.8 years)]. The Control Group maintained their lifestyle and the Intervention Group performed a videogame dance training three times per week for 12 weeks...
April 19, 2018: Rejuvenation Research
https://www.readbyqxmd.com/read/29668460/relations-of-apelin-with-cardiac-remodeling-in-patients-with-hypertension-and-type-2-diabetes
#8
Sergiy Koval, Kostiantyn Iushko, Tatyana Starchenko
BACKGROUND: The peptide apelin has antihypertensive and antidiabetic properties, but its role in the processes of cardiac remodeling in patients with hypertension and type 2 diabetes (T2D) is poorly understood. AIM: The aim of the study was to investigate apelin levels in patients with hyper-tension and T2D and to determine its relations to heart structural parameters and types of cardiac remodeling. MATERIALS AND METHODS: We examined 63 patients with hypertension and T2D...
March 1, 2018: Folia Medica
https://www.readbyqxmd.com/read/29667125/parallel-exhaustive-processing-underlies-logarithmic-search-functions-visual-search-with-cortical-magnification
#9
Zhiyuan Wang, Alejandro Lleras, Simona Buetti
Our lab recently found evidence that efficient visual search (with a fixed target) is characterized by logarithmic Reaction Time (RT) × Set Size functions whose steepness is modulated by the similarity between target and distractors. To determine whether this pattern of results was based on low-level visual factors uncontrolled by previous experiments, we minimized the possibility of crowding effects in the display, compensated for the cortical magnification factor by magnifying search items based on their eccentricity, and compared search performance on such displays to performance on displays without magnification compensation...
April 17, 2018: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/29665457/three-dimensional-geometrical-and-topological-characteristics-of-grains-in-conventional-and-grain-boundary-engineered-316l-stainless-steel
#10
Tingguang Liu, Shuang Xia, Bangxin Zhou, Qin Bai, Gregory S Rohrer
The three-dimensional microstructures of a conventional 316L stainless steel and the same material after grain boundary (GB) engineering have been measured by serial sectioning coupled with electron backscatter diffraction mapping. While it is well known that GB engineered materials are differentiated from conventional materials because of the proportion of coincidence site lattice boundaries, the size of their twin-related domains, and their reduced random boundary connectivity, this work provides a quantitative comparison of the geometrical and topological characteristics of grains in 316L stainless steel before and after GB engineering...
April 10, 2018: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29663721/alveolar-rhabdomyosarcoma-in-the-cerebrospinal-fluid
#11
Janice S Ahn, Melina Flanagan
Alveolar rhabdomyosarcoma (RMS) is an aggressive soft tissue mass demonstrating rapid growth, dissemination, and leptomeningeal spread. Primary diagnosis is usually established by core biopsy. In rare cases, cytopathologic evaluation is indicated to identify recurrent or metastatic disease. We present a case of a 24-year-old man with a previously diagnosed alveolar RMS of the foot who presented to our institution with back pain. A lumbar puncture was performed and the cerebrospinal fluid (CSF) showed atypical cells demonstrating nuclear enlargement, eccentricity, binucleation, and frequent karyorrhexis...
April 16, 2018: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/29663541/eccentric-exercise-increases-circulating-fibroblast-activation-protein-but-not-bioactive-fibroblast-growth-factor-21-in-healthy-humans
#12
Biraj Parmar, Jo E Lewis, Ricardo J Samms, Francis J P Ebling, Christine C Cheng, Andrew C Adams, Joanne Mallinson, Scott Cooper, Tariq Taylor, Reza Ghasemi, Francis B Stephens, Kostas Tsintzas
NEW FINDINGS: What is the central question of this study? The role of FGF21 as an exercise-induced myokine remains controversial. The aim of this study was to determine whether eccentric exercise would augment the release of FGF21 and/or its regulatory enzyme Fibroblast Activation Protein (FAP) from skeletal muscle tissue into the systemic circulation of healthy human volunteers. What is the main finding and its importance? Eccentric exercise does not release total or bioactive FGF21 from human skeletal muscle...
April 16, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/29663506/new-classification-of-geometric-ventricular-patterns-in-severe-aortic-stenosis-could-it-be-clinically-useful
#13
Concetta Di Nora, Eugenio Cervesato, Iulian Cosei, Andreea Ravasel, Bogdan A Popescu, Concetta Zito, Scipione Carerj, Francesco Antonini-Canterin, Andreea C Popescu
BACKGROUND: In severe aortic stenosis, different left ventricle (LV) remodeling patterns as a response to pressure overload have distinct hemodynamic profiles, cardiac function, and outcomes. The most common classification considers LV relative wall thickness and LV mass index to create 4 different groups. A new classification including also end-diastolic volume index has been recently proposed. AIM: To describe the prevalence of the newly identified remodeling patterns in patients with severe aortic stenosis and to evaluate their clinical relevance according to symptoms...
April 16, 2018: Echocardiography
https://www.readbyqxmd.com/read/29663488/delayed-onset-muscle-soreness-in-human-masticatory-muscles-increases-inhibitory-jaw-reflex-responses
#14
Michail Koutris, Kemal S Türker, Maurits K A van Selms, Frank Lobbezoo
INTRODUCTION: The effects of masticatory muscles' overloading on jaw-motor control are not yet fully clarified. Therefore, it was tested whether eccentric and concentric exercises of the human masticatory muscles would influence inhibitory jaw-reflex responses. METHODS: 11 participants (6 males, 5 females) performed 6, 5-min bouts of eccentric-concentric contractions. Before, immediately after, 24 hours, 48 hours, and one week afterwards, visual analogue scale (VAS) scores for jaw-muscle fatigue and pain, maximum voluntary bite force (MVBF), and inhibitory jaw reflexes were recorded...
April 16, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/29661548/modal-space-three-state-feedback-control-for-electro-hydraulic-servo-plane-redundant-driving-mechanism-with-eccentric-load-decoupling
#15
Jinsong Zhao, Zhipeng Wang, Chuanbi Zhang, Chifu Yang, Wenjie Bai, Zining Zhao
The shaking table based on electro-hydraulic servo parallel mechanism has the advantage of strong carrying capacity. However, the strong coupling caused by the eccentric load not only affects the degree of freedom space control precision, but also brings trouble to the system control. A novel decoupling control strategy is proposed, which is based on modal space to solve the coupling problem for parallel mechanism with eccentric load. The phenomenon of strong dynamic coupling among degree of freedom space is described by experiments, and its influence on control design is discussed...
April 13, 2018: ISA Transactions
https://www.readbyqxmd.com/read/29660973/computation-of-hemodynamics-in-eccentric-coronary-stenosis-a-morphological-parametric-study
#16
Xinzhou Xie, Yabing Li, Songyun Xie
BACKGROUND: Flow recirculation occurs in eccentric coronary stenosis, which can lead to adverse outcome. The complex local geodesic patterns of eccentric stenosis are critical factors in determining the flow characteristics in post-stenotic flow. OBJECTIVE: The main objective of this study is to relate the relationship between the detailed morphological parameters in eccentric coronary stenosis and the post-stenotic flow characteristics. METHODS: Several idealized eccentric coronary stenosis models with variable morphological parameters are created to conduct a series of computational fluid dynamics analysis...
April 7, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29660632/female-pfp-patients-present-alterations-in-eccentric-muscle-activity-but-not-the-temporal-order-of-activation-of-the-vastus-lateralis-muscle-during-the-single-leg-triple-hop-test
#17
Marcelo Martins Kalytczak, Paulo Roberto Garcia Lucareli, Amir Curcio Dos Reis, André Serra Bley, Daniela Aparecida Biasotto-Gonzalez, João Carlos Ferrari Correa, Fabiano Politti
This study aimed to compare the concentric and eccentric activity and the temporal order of peak activity of the hip and knee muscles between women with patellofemoral pain (PFP) and healthy women during the single leg triple hop test (SLTHT). Electromyographic (EMG) and Kinematic data were collected from 14 healthy women (CG) and 14 women diagnosed with PFP (PFG) during a single session of the single leg triple hop test. Integral surface electromyography (iEMG) data of the hip and knee muscles in eccentric and concentric phases and the length of time that each muscle needed to reach the maximal peak of muscle activity were calculated...
April 7, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29659539/post-game-high-protein-intake-may-improve-recovery-of-football-specific-performance-during-a-congested-game-fixture-results-from-the-pro-football-study
#18
Athanasios Poulios, Ioannis G Fatouros, Magni Mohr, Dimitrios K Draganidis, Chariklia Deli, Konstantinos Papanikolaou, Apostolos Sovatzidis, Theofano Nakopoulou, Georgios Ermidis, Theofanis Tzatzakis, Vasiliki C Laschou, Kalliopi Georgakouli, Agisilaos Koulouris, Panagiotis Tsimeas, Athanasios Chatzinikolaou, Leonidas G Karagounis, Dimitrios Batsilas, Peter Krustrup, Athanasios Z Jamurtas
The effects of protein supplementation on performance recovery and inflammatory responses during a simulated one-week in-season microcycle with two games (G1, G2) performed three days apart were examined. Twenty football players participated in two trials, receiving either milk protein concentrate (1.15 and 0.26 g/kg on game and training days, respectively) (PRO) or an energy-matched placebo (1.37 and 0.31 g/kg of carbohydrate on game and training days, respectively) (PLA) according to a randomized, repeated-measures, crossover, double-blind design...
April 16, 2018: Nutrients
https://www.readbyqxmd.com/read/29657758/temporal-and-spatial-changes-in-wall-shear-stress-during-atherosclerotic-plaque-progression-in-mice
#19
R Xing, A M Moerman, Y Ridwan, M J Daemen, A F W van der Steen, F J H Gijsen, K van der Heiden
Wall shear stress (WSS) is involved in atherosclerotic plaque initiation, yet its role in plaque progression remains unclear. We aimed to study (i) the temporal and spatial changes in WSS over a growing plaque and (ii) the correlation between WSS and plaque composition, using animal-specific data in an atherosclerotic mouse model. Tapered casts were placed around the right common carotid arteries (RCCA) of ApoE-/- mice. At 5, 7 and 9 weeks after cast placement, RCCA geometry was reconstructed using contrast-enhanced micro-CT...
March 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29656280/real-world-bioresorbable-vascular-scaffold-experience-compared-with-second-generation-metallic-drug-eluting-stents-in-complex-coronary-lesions
#20
Naotaka Okamoto, Hiroshi Ueda, Takahiro Yoshimura, Surbhi Chamaria, Samit Bhatheja, Yuliya Vengrenyuk, Samaneh Rabiei, Yonandy Barrientos, Vishal Kapur, Nitin Barman, Joseph Sweeny, Usman Baber, Roxana Mehran, Samin K Sharma, Annapoorna S Kini
OBJECTIVES: The aim of the study was to compare the acute outcomes of Absorb bioresorbable vascular scaffolds (BVS) and second-generation drug-eluting stent (DES) implantation in routine clinical practice. There is a paucity of data regarding BVS use in a real-world patient population. METHODS: The study population comprised 40 consecutive patients who underwent percutaneous coronary intervention (PCI) with BVS implantation at a tertiary-care center in New York, New York between July and December of 2016...
April 15, 2018: Journal of Invasive Cardiology
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