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https://www.readbyqxmd.com/read/28544170/hamstring-injury-prevention-in-soccer-before-or-after-training
#1
Ric Lovell, Michael Knox, Matthew Weston, Jason C Siegler, Scott Brennan, Paul W M Marshall
We examined the effects of a 12-week program of Nordic hamstring exercises (NHE), administered before or after football training, upon eccentric hamstring strength, muscle activity, and architectural adaptations. Amateur soccer players were randomized into 3 groups. The control group (CON; n=11) undertook core stability exercises, whereas a periodized NHE program was delivered either before (NHEBEF ; n=10) or after (NHEAFT ; n=14) bi-weekly training sessions. Outcome measures included peak torque and concomitant normalized peak surface electromyography signals (sEMG) of the biceps femoris (BF) and medial hamstring (MH) muscles during knee flexor maximal eccentric contractions, performed at 30°·s(-1) ...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28543791/the-association-between-eccentric-hip-abduction-strength-and-hip-and-knee-angular-movements-in-recreational-male-runners-an-explorative-study
#2
René B K Brund, Sten Rasmussen, Rasmus O Nielsen, Uwe G Kersting, Uffe Laessoe, Michael Voigt
Weak hip abductors may be related with increased hip adduction and knee abduction angular movement, which may be risk factors of lower extremity injuries. Since the role of eccentric hip abduction strength (EHAS) on hip adduction angular movement and the knee abduction angular movement (KABD) remains unclear and the purpose of the present study was to explore the association between EHAS and hip- and knee angular movement. In 100 healthy male recreational runners, EHAS was quantified using an isokinetic dynamometer, while hip- and knee angular movement were collected using pressure sensitive treadmill and Codamotion active marker system...
May 24, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28543756/perventricular-device-closure-of-doubly-committed-sub-arterial-ventricular-septal-defects-via-a-left-infra-axillary-approach
#3
Sijie Zhou, Liyun Zhao, Taibing Fan, Bin Li, Weijie Liang, Haoju Dong, Shubo Song, Lin Liu
BACKGROUND: This study sought to evaluate the feasibility, safety, and efficacy of perventricular device closure of a doubly committed sub-arterial ventricular septal defect (dcVSD) through a left infra-axillary approach. METHOD: Forty-five patients, with a dcVSD of less than 8 mm in diameter, were enrolled in this study. The pericardium was exposed and opened through a left infra-axillary mini-incision. Two parallel purse-string sutures were placed on the right ventricle outflow tract and under transesophageal echocardiography guidance, a delivery sheath loaded with the device was inserted into the right ventricle and advanced through the defect into the left ventricle...
May 24, 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28543417/toward-public-bioethics
#4
EDITORIAL
Gregory E Kaebnick
This issue of the Hastings Center Report (May-June 2017) features a couple of interesting takes on the governance challenges of emerging technologies. In an essay on the National Academies of Science, Engineering, and Medicine report published this February on human germ-line gene editing, Eric Juengst, a philosopher at the University of North Carolina, argues that the NASEM committee did not manage to rethink the rules. Juengst reaches what he calls an "eccentric conclusion": "The committee's 2017 consensus report has been widely interpreted as 'opening the door' to inheritable human genetic modification and holding a line against enhancement interventions...
May 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28543411/crowdsourcing-the-moral-limits-of-human-gene-editing
#5
Eric T Juengst
In 2015, a flourish of "alarums and excursions" by the scientific community propelled CRISPR/Cas9 and other new gene-editing techniques into public attention. At issue were two kinds of potential gene-editing experiments in humans: those making inheritable germ-line modifications and those designed to enhance human traits beyond what is necessary for health and healing. The scientific consensus seemed to be that while research to develop safe and effective human gene editing should continue, society's moral uncertainties about these two kinds of experiments needed to be better resolved before clinical trials of either type should be attempted...
May 2017: Hastings Center Report
https://www.readbyqxmd.com/read/28542230/visual-field-changes-after-vitrectomy-with-internal-limiting-membrane-peeling-for-epiretinal-membrane-or-macular-hole-in-glaucomatous-eyes
#6
Shunsuke Tsuchiya, Tomomi Higashide, Kazuhisa Sugiyama
PURPOSE: To investigate visual field changes after vitrectomy for macular diseases in glaucomatous eyes. METHODS: A retrospective review of 54 eyes from 54 patients with glaucoma, who underwent vitrectomy for epiretinal membrane (ERM; 42 eyes) or macular hole (MH; 12 eyes). Standard automated perimetry (Humphrey visual field 24-2 program) was performed and analyzed preoperatively and twice postoperatively (1st and 2nd sessions; 4.7 ± 2.5, 10.3 ± 3.7 months after surgery, respectively)...
2017: PloS One
https://www.readbyqxmd.com/read/28540635/wire-bias-in-coronary-measurement-using-optical-coherence-tomography
#7
Edward James Danson, Peter Hansen, Ravinay Bhindi
OCT is widely used for accurate coronary stent sizing; however, the impact of coronary tortuosity or guide wire weight on the accuracy of OCT in assessing coronary dimensions is not known. This study sought to determine whether guide wire properties impact on coronary diameter and length estimation by optical coherence tomography (OCT) in tortuous segments of coronary artery. OCT coronary diameters were determined in selected patients with tortuous arteries before and after removal of a supportive guide wire to obtain unobscured images...
May 24, 2017: Cardiovascular Intervention and Therapeutics
https://www.readbyqxmd.com/read/28540065/dynamic-and-quantitative-evaluation-of-degenerative-mitral-valve-disease-a-dedicated-framework-based-on-cardiac-magnetic-resonance-imaging
#8
Francesco Sturla, Francesco Onorati, Giovanni Puppini, Omar A Pappalardo, Matteo Selmi, Emiliano Votta, Giuseppe Faggian, Alberto Redaelli
BACKGROUND: Accurate quantification of mitral valve (MV) morphology and dynamic behavior over the cardiac cycle is crucial to understand the mechanisms of degenerative MV dysfunction and to guide the surgical intervention. Cardiac magnetic resonance (CMR) imaging has progressively been adopted to evaluate MV pathophysiology, although a dedicated framework is required to perform a quantitative assessment of the functional MV anatomy. METHODS: We investigated MV dynamic behavior in subjects with normal MV anatomy (n=10) and patients referred to surgery due to degenerative MV prolapse, classified as fibro-elastic deficiency (FED, n=9) and Barlow's disease (BD, n=10)...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28539381/impact-of-chamber-dilatation-on-the-prognostic-value-of-left-ventricular-geometry-in-hypertension
#9
Paolo Verdecchia, Fabio Angeli, Giovanni Mazzotta, Claudia Bartolini, Marta Garofoli, Adolfo Aita, Cristina Poltronieri, Maria Gabriella Pinzagli, Francesca Valecchi, Stefania Martone, Elisa Ramundo, Dario Turturiello, Gianpaolo Reboldi
BACKGROUND: The different geometric patterns of the left ventricle may or may not coexist with chamber dilatation. The prognostic impact of such a combination is unclear. METHODS AND RESULTS: We studied a cohort of 2635 initially untreated patients with hypertension, mean age 50 years. At entry, 24-hour ambulatory blood pressure progressively increased across the patterns of normal geometry, concentric left ventricular (LV) remodeling, eccentric nondilated LV hypertrophy (LVH), eccentric dilated LVH, concentric nondilated LVH, and concentric dilated LVH...
May 24, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28539300/-clinical-outcomes-of-intravascular-ultrasound-in-guiding-the-treatment-of-non-left-main-intermediate-coronary-lesions-for-patients-with-acute-coronary-syndrome
#10
Hong-Bin Liang, Qian Guo, Xin-Lu Zhang, Xue-Wei Liu, Yong-Zhen Tang, Wei-Yu Chen, Yu-Qing Hou, Jian-Cheng Xiu
OBJECTIVE: To evaluate the long-term clinical outcomes of intravascular ultrasound(IVUS) in guiding the treatment of non-left main intermediate coronary lesions for patients of acute coronary syndrome (ACS). METHODS: A total of 25 patients with intermediate coronary lesions(stenosis of 40%-70%) confirmed by coronary angiography were performed with IVUS. When MLA≥4 mm(2), we deferred the PCI treatment and performed optimal medical treatment (OMT). The patient were followed up for 12 month...
May 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28538317/effects-of-inertial-setting-on-power-force-work-and-eccentric-overload-during-flywheel-resistance-exercise-in-women-and-men
#11
Luis M Martinez-Aranda, Rodrigo Fernandez-Gonzalo
Martinez-Aranda, LM and Fernandez-Gonzalo, R. Effects of inertial setting on power, force, work and eccentric overload during flywheel resistance exercise in women and men. J Strength Cond Res 31(6): 1653-1661, 2017-Exercise load is a key component in determining end-point adaptations to resistance exercise. Yet, there is no information regarding the use of different inertia (i.e., loads) during isoinertial flywheel resistance exercise, a very popular high-intensity training model. Thus, this study examined power, work, force, and eccentric overload produced during flywheel resistance exercise with different inertial settings in men and women...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28538313/the-effects-of-accentuated-eccentric-loading-on-the-drop-jump-exercise-and-the-subsequent-postactivation-potentiation-response
#12
Lee A Bridgeman, Michael R McGuigan, Nicholas D Gill, Deborah K Dulson
Bridgeman, LA, McGuigan, MR, Gill, ND, and Dulson, DK. The effects of accentuated eccentric loading on the drop jump exercise and the subsequent postactivation potentiation response. J Strength Cond Res 31(6): 1620-1626, 2017-The aims of this study were (a) to investigate the acute effects of different drop jump (DJ) accentuated eccentric loading (AEL) protocols and (b) to investigate the effect of these AEL DJ protocols on subsequent countermovement jump (CMJ) performance. The subjects were 12 strength-trained athletes; initially, baseline CMJ performance was assessed and individual optimal DJ drop height identified...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28532578/impaired-peripheral-reaching-and-on-line-corrections-in-patient-df-optic-ataxia-with-visual-form-agnosia
#13
Stéphanie Rossit, Monika Harvey, Stephen H Butler, Larissa Szymanek, Stéphanie Morand, Simona Monaco, Robert D McIntosh
An influential model of vision suggests the presence of two visual streams within the brain: a dorsal occipito-parietal stream which mediates action and a ventral occipito-temporal stream which mediates perception. One of the cornerstones of this model is DF, a patient with visual form agnosia following bilateral ventral stream lesions. Despite her inability to identify and distinguish visual stimuli, DF can still use visual information to control her hand actions towards these stimuli. These observations have been widely interpreted as demonstrating a double dissociation from optic ataxia, a condition observed after bilateral dorsal stream damage in which patients are unable to act towards objects that they can recognize...
April 22, 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
https://www.readbyqxmd.com/read/28532478/study-protocol-a-double-blind-randomised-control-trial-of-high-volume-image-guided-injections-in-achilles-and-patellar-tendinopathy-in-a-young-active-population
#14
Robert M Barker-Davies, Alastair Nicol, I McCurdie, James Watson, Polly Baker, Patrick Wheeler, Daniel Fong, Mark Lewis, Alexander N Bennett
BACKGROUND: Chronic tendinopathy is a significant problem particularly in active populations limiting sporting and occupational performance. The prevalence of patellar tendinopathy in some sports is near 50% and the incidence of lower limb tendinopathy is 1.4% p.a. in the UK Military. Management includes isometric, eccentric, heavy slow resistance exercises and extracorporeal shockwave therapy (ESWT). Often these treatments are inadequate yet there is no good evidence for injection therapies and success rates from surgery can be as low as 50%...
May 22, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28530451/effect-of-high-volume-injection-platelet-rich-plasma-and-sham-treatment-in-chronic-midportion-achilles-tendinopathy-a-randomized-double-blinded-prospective-study
#15
Anders Ploug Boesen, Rudi Hansen, Morten Ilum Boesen, Peter Malliaras, Henning Langberg
BACKGROUND: Injection therapies are often considered alongside exercise for chronic midportion Achilles tendinopathy (AT), although evidence of their efficacy is sparse. PURPOSE: To determine whether eccentric training in combination with high-volume injection (HVI) or platelet-rich plasma (PRP) injections improves outcomes in AT. STUDY DESIGN: Randomized controlled trial; Level of evidence, 1. METHODS: A total of 60 men (age, 18-59 years) with chronic (>3 months) AT were included and followed for 6 months (n = 57)...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28530078/-athlete-s-heart-the-more-the-merrier
#16
REVIEW
Reut Shavit, Michael Glikson, Naama Constantini
Regular moderate exercise training is effective for the prevention and treatment of many common chronic diseases and improves cardiovascular health and life expectancy. However, long-term excessive endurance exercise may induce pathological structural remodeling of the heart. The athlete's heart is characterized by enlargement of cardiac chambers and eccentric hypertrophy with preserved myocardial function as normal physiological adaptations for prolonged and intense endurance physical stress. However, recent studies have demonstrated transient right ventricular dysfunction and elevation of cardiac biomarkers following intense endurance exercise...
September 2016: Harefuah
https://www.readbyqxmd.com/read/28529371/siva-the-mad-lord-a-puranic-perspective
#17
Ottilingam Somasundaram, Tejus Murthy
The eccentricities of Lord Shiva, especially His attire, behavior - particularly the midnight dance at the cremation grounds surrounded by various strange beings, fondness to remain naked, and love for strange pets such as snakes and fawn, have attracted the loving and devout attention from His various adiyargal (devotees). This has resulted in the outpouring of their love for their Lord in the form of Thevaram and Thiruvachakam of Sambandar, Appar, Sundarar, Karaikal Ammaiyar, and Manickavachakar. Along with these writings, the background Puranic myths are mentioned...
January 2017: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28527452/structural-and-dynamic-inhomogeneities-induced-by-curvature-gradients-in-elliptic-colloidal-halos-of-paramagnetic-particles
#18
O A Ramírez-Garza, J M Méndez-Alcaraz, P González-Mozuelos
Paramagnetic colloidal particles distributed along an ellipse are used as a model system to study the effects of curvature gradients on the structure and dynamics of colloids in curved manifolds. Unlike what happens for circular and spherical systems, in the present case, the equilibrium one-particle distribution function displays inhomogeneities due to the changing curvature along the ellipse. The ensuing effects on the two-body correlations are also analyzed, leading to the observation of anisotropic and long-ranged effects...
May 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28526631/mating-strategies-and-sexual-functioning-in-personality-disorders-a%C3%A2-comprehensive-review-of-literature
#19
REVIEW
Alberto Collazzoni, Giacomo Ciocca, Erika Limoncin, Carmela Marucci, Daniele Mollaioli, Stefania Di Sante, Giorgio Di Lorenzo, Cinzia Niolu, Alberto Siracusano, Mario Maggi, Giovanni Castellini, Alessandro Rossi, Emmanuele A Jannini
INTRODUCTION: Personality disorders impair several aspects of intrapsychic and interpersonal life. In particular, mating strategies and sexual functioning could manifest in different and/or dysfunctional ways in people with personality disorders. AIM: To describe, through a comprehensive review of the literature, the mating strategies and sexual functioning in patients with personality disorders. METHODS: We listed and discussed the principal studies on the relation between mating strategies and sexual functioning in personality disorders...
May 16, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28524688/constraints-on-the-dynamical-environments-of-supermassive-black-hole-binaries-using-pulsar-timing-arrays
#20
Stephen R Taylor, Joseph Simon, Laura Sampson
We introduce a technique for gravitational-wave analysis, where Gaussian process regression is used to emulate the strain spectrum of a stochastic background by training on population-synthesis simulations. This leads to direct Bayesian inference on astrophysical parameters. For pulsar timing arrays specifically, we interpolate over the parameter space of supermassive black-hole binary environments, including three-body stellar scattering, and evolving orbital eccentricity. We illustrate our approach on mock data, and assess the prospects for inference with data similar to the NANOGrav 9-yr data release...
May 5, 2017: Physical Review Letters
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