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https://www.readbyqxmd.com/read/29334580/the-power-load-relationship-during-a-countermovement-jump-a-joint-level-analysis
#1
Kym J Williams, Dale W Chapman, Elissa J Phillips, Nick Ball
This study aimed to investigate if hip, knee and ankle peak power is influenced by the relative load lifted, altering the joint and system load-power relationship during a countermovement jump (CMJ). Twenty-Three male national representative athletes (age: 20.3 ± 3.1y, squat 1RM: 133.8 ± 24.8kg) completed three CMJs at relative barbell loads of 0, 10, 20, 30 and 40% of an athlete's estimated back squat 1RM. Ground reaction force and joint kinematics were captured using a 16 camera motion capture array integrated with two in ground tri-axial force plates...
January 12, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29334576/cheek-volumization-and-nasolabial-folds
#2
Donald S Mowlds, Val Lambros
The impression that cheek filling results in longitudinal shortening ("lift") of the skin and elevation of the nasolabial crease(NLC) or nasolabial fold (NLF) has become common within the facial injection community, but remains unsubstantiated. In this study, seventy-seven patients were evaluated pre and post-injection injection of the cheeks with an Hyaluronic Acid filler using a 3-dimensional camera system. A constant pattern of skin expansion away from the center of the injection and perpendicular to the surface of the skin was observed...
January 10, 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29334165/3d-printing-of-liquid-crystal-elastomeric-actuators-with-spatially-programed-nematic-order
#3
Arda Kotikian, Ryan L Truby, John William Boley, Timothy J White, Jennifer A Lewis
Liquid crystal elastomers (LCEs) are soft materials capable of large, reversible shape changes, which may find potential application as artificial muscles, soft robots, and dynamic functional architectures. Here, the design and additive manufacturing of LCE actuators (LCEAs) with spatially programed nematic order that exhibit large, reversible, and repeatable contraction with high specific work capacity are reported. First, a photopolymerizable, solvent-free, main-chain LCE ink is created via aza-Michael addition with the appropriate viscoelastic properties for 3D printing...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29332749/long-term-effect-of-direction-movement-control-training-on-female-patients-with-chronic-neck-pain
#4
Zohreh Khosrokiani, Amir Letafatkar, Yahya Sokhanguei
BACKGROUND: Treatment of movement faults in the neck is known as an important factor in treatment of chronic neck pain. Along with the identification of site and direction of the faults, direction-movement control intervention retrains the control of the movement faults. PURPOSE: This study was designed to investigate long-term effects of a direction-movement control training on pain, disability, head repositioning accuracy, function, cervical flexor endurance, and range of motion in female patients with chronic nonspecific neck pain...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29332059/analysis-of-skeletal-muscle-performance-using-piezoelectric-film-sensors
#5
Anat Ratnovsky, Emanuel Kusayev, Sara Naftali
A flexible piezoelectric thin film sensor has been proposed recently in several studies for detection of muscle movements. The objective of this study was to investigate the ability of this sensor to assess skeletal muscle performance and fatigue under isokinetic contractions. Simultaneous noninvasive measurements of muscles activity were done using surface electromyography (EMG) electrodes and two thin film piezoelectric sensors. Measurements were taken from the biceps during slow and fast elbow flexion with and without strong grip, during different weight lifting and from the gastrocnemius during treadmill marching at speeds of 4 and of 10 kph...
January 5, 2018: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29332031/difference-of-the-thickness-and-activation-of-trunk-muscles-during-static-stoop-lift-at-different-loads-between-subjects-with-and-without-low-back-pain
#6
Hoe-Song Yang
BACKGROUND: Patients suffering from low back pain (LBP) have been reported to alter muscle contraction strategies. OBJECTIVE: To compare activity and thickness of the trunk muscles (external oblique (EO), internal oblique (IO), transversus abdominis (TrA), and lumbar multifidus (LM)) during static stoop lift at different lifting loads between the subjects with and without LBP. METHODS: Twenty eight subjects with LBP and twenty healthy subjects were recruited...
December 29, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/29331221/mechanisms-of-changes-in-functional-mitral-regurgitation-by-preload-alterations
#7
Atsuko Furukawa, Yukio Abe, Kazato Ito, Shingo Hosogi, Katsuhito Yamamoto, Hiroshi Ito
BACKGROUND: This study aimed to investigate the mechanisms of acute changes in functional mitral regurgitation (FMR) by preload alterations. METHODS: Twenty-two consecutive patients with left ventricular ejection fraction <40% and at least mild FMR underwent transthoracic echocardiography. Passive leg lifting and sublingual administration of nitroglycerin were performed to alter preload. Mitral regurgitant volume (MRV) was assessed using the Doppler method. RESULTS: MRV changed in parallel with preload alterations...
January 10, 2018: Journal of Cardiology
https://www.readbyqxmd.com/read/29330425/formation-and-dynamics-of-a-solar-eruptive-flux-tube
#8
Satoshi Inoue, Kanya Kusano, Jörg Büchner, Jan Skála
Solar eruptions are well-known drivers of extreme space weather, which can greatly disturb the Earth's magnetosphere and ionosphere. The triggering process and initial dynamics of these eruptions are still an area of intense study. Here we perform a magnetohydrodynamic simulation taking into account the observed photospheric magnetic field to reveal the dynamics of a solar eruption in a real magnetic environment. In our simulation, we confirmed that tether-cutting reconnection occurring locally above the polarity inversion line creates a twisted flux tube, which is lifted into a toroidal unstable area where it loses equilibrium, destroying the force-free state, and driving the eruption...
January 12, 2018: Nature Communications
https://www.readbyqxmd.com/read/29330275/case-of-chest-pain-in-a-young-man
#9
Ankit Gupta, Atul Vijay Palkar, Priya Narwal
A young man with a history of smoking presented with acute-onset chest pain after lifting weights. He also noticed a change in his voice, tightness in his neck and difficulty breathing. A chest radiograph showed soft tissue emphysema in the neck. A CT scan of the chest revealed moderate amount of pneumomediastinum tracking into the neck and down to the diaphragm. He was haemodynamically stable and had no hypoxia or dysphagia. He was monitored for 48 hours and discharged home after resolution of his symptoms...
January 12, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29329655/-erratum-to-cervical-lift-an-update-annales-de-chirurgie-plastique-esth%C3%A3-tique-2017-62-461-73-doi-10-1016-j-anplas-2017-08-002
#10
D Labbé, P Guerreschi
No abstract text is available yet for this article.
January 9, 2018: Annales de Chirurgie Plastique et Esthétique
https://www.readbyqxmd.com/read/29327919/differentiation-and-relative-quantitation-of-disaccharide-iso-mers-by-maldi-tof-tof-mass-spectrometry
#11
Lingpeng Zhan, Xiaobo Xie, Yafeng Li, Huihui Liu, Caiqiao Xiong, Zongxiu Nie
Saccharide isomer differentiation has been a challenge in glycomics, as the lack of technology to decipher fully the diverse structures of compositions, linkages and anomeric configurations. Several mass spectrometry-based methods have been applied to the discrimination of disaccharide isomers, but limited quantitative analyses have been reported. In the present study, MALDI-LIFT-TOF/TOF has been investigated to differentiate and relatively quantify underivatized glucose-containing disaccharide isomers that differ in composition, connectivity or configuration...
January 12, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29326516/indirect-sinus-lift-done-using-autogenous-core-lift-technique-in-combination-with-alloplastic-phosphosilicate-putty-in-atrophic-maxillary-posterior-region-a-clinical-report-with-1-year-follow-up
#12
Umesh Y Pai, Shobha Rodrigues, Puneeth Hegde, Nikita Khurana
Pneumatization of the sinus is a common occurrence after extraction of maxillary posterior teeth. Implant procedures require a clinically acceptable level of bone to be present for implants to be placed in function. Residual bone with >4 mm of height can be managed using the indirect sinus lift procedure, whereas bone height <4 mm requires a direct sinus lift using lateral window approach. This clinical case report describes the use of autogenous core used to lift the membrane in conjunction with calcium phosphosilicate putty using minimal armamentarium, thereby avoiding the associated morbidity and complications associated with a direct sinus lift procedure...
October 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/29324632/chair-lift-falls-and-injuries-in-children
#13
Eric W Glissmeyer, Ryan R Metzger, Robert Bolte
OBJECTIVE: The objective of this study was to compare demographic injury and treatment characteristics of hospitalized pediatric cases of falls from chair lifts to cases of other ski and snowboarding injuries and identify potential interventions for preventing falls from chair lifts. METHODS: Retrospective query of the trauma registry of Utah's only pediatric trauma center for children younger than 18 years requiring hospitalization for a ski or snowboarding injury from November 2004 to February 2014...
January 11, 2018: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29324412/implicit-negative-sub-categorization-and-sink-diversion-for-object-detection
#14
Yu Li, Sheng Tang, Min Lin, Yongdong Zhang, Jintao Li, Shuicheng Yan
In this paper, we focus on improving the proposal classification stage in the object detection task and present implicit negative sub-categorization and sink diversion to lift the performance by strengthening loss function in this stage. First, based on the observation that the "background" class is generally very diverse and thus challenging to be handled as a single indiscriminative class in existing state-of-the-art methods, we propose to divide the background category into multiple implicit sub-categories to explicitly differentiate diverse patterns within it...
April 2018: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/29323381/lifted-graphene-nanoribbons-on-gold-from-smooth-sliding-to-multiple-stick-slip-regimes
#15
L Gigli, N Manini, E Tosatti, R Guerra, A Vanossi
Graphene nanoribbons (GNRs) physisorbed on a Au(111) surface can be picked up, lifted at one end, and made to slide by means of the tip of an atomic-force microscope. The dynamic transition from smooth sliding to multiple stick-slip regimes, the pushing/pulling force asymmetry, the presence of pinning, and its origin are real frictional processes in a nutshell, in need of a theoretical description. To this purpose, we conduct classical simulations of frictional manipulations of a 30 nm-long GNR, one end of which is pushed or pulled horizontally while held at different heights above the Au surface...
January 11, 2018: Nanoscale
https://www.readbyqxmd.com/read/29322521/fitting-unanchored-puzzle-pieces-in-the-skeleton-appropriate-3d-scapular-positions-for-the-quadrupedal-support-in-tetrapods
#16
Shin-Ichi Fujiwara
Deducing the scapular positions of extinct tetrapod skeletons remains difficult, because the scapulae and rib cage are connected with each other not directly by skeletal joint, but by thoracic muscles. In extant non-testudine quadrupedal tetrapods, the top positions of the scapulae/suprascapulae occur at the anterior portion of the rib cage, above the vertebral column and near the median plane. The adequacy of this position was tested using three-dimensional mechanical models of Felis, Rattus and Chamaeleo that assumed stances on a forelimb on a single side and the hindlimbs...
January 11, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29319545/patient-reported-outcomes-after-lateral-wall-sinus-floor-elevation-a-systematic-review
#17
Faris Younes, Aryan Eghbali, Thomas Goemaere, Thomas De Bruyckere, Jan Cosyn
OBJECTIVES: The aim of this systematic review is to assess patient-reported outcome measures (PROMs) after a sinus lift elevation by means of a lateral approach. MATERIAL AND METHODS: An electronic search was performed to search for eligible publications reporting PROMs after a lateral wall sinus lift procedure. Selected articles were further scrutinized and underwent a quality check before inclusion in a final study pool. RESULTS: The electronic search provided us with 2444 articles of which 98 were further examined through a full-text analysis...
January 9, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29318167/a-comparison-of-cervical-spine-motion-after-immobilization-with-a-traditional-spine-board-and-full-body-vacuum-mattress-splint
#18
Brian E Etier, Grant E Norte, Megan M Gleason, Dustin L Richter, Kelli F Pugh, Keith B Thomson, Lindsay V Slater, Joe M Hart, Stephen F Brockmeier, David R Diduch
Background: The National Athletic Trainers' Association (NATA) advocates for cervical spine immobilization on a rigid board or vacuum splint and for removal of athletic equipment before transfer to an emergency medical facility. Purpose: To (1) compare triplanar cervical spine motion using motion capture between a traditional rigid spine board and a full-body vacuum splint in equipped and unequipped athletes, (2) assess cervical spine motion during the removal of a football helmet and shoulder pads, and (3) evaluate the effect of body mass on cervical spine motion...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29316910/determinants-of-new-drugs-prescription-in-the-swiss-healthcare-market
#19
Anne Decollogny, Romain Piaget-Rossel, Patrick Taffé, Yves Eggli
BACKGROUND: Drug markets are very complex and, while many new drugs are registered each year, little is known about what drives the prescription of these new drugs. This study attempts to lift the veil from this important subject by analyzing simultaneously the impact of several variables on the prescription of novelty. METHODS: Data provided by four Swiss sickness funds were analyzed. These data included information about more than 470,000 insured, notably their drug intake...
January 9, 2018: BMC Health Services Research
https://www.readbyqxmd.com/read/29316781/quantitative-assessment-of-hand-dysfunction-in-patients-with-early-parkinson-s-disease-and-focal-hand-dystonia
#20
Deepa Kandaswamy, MuthuKumar M, Mathew Alexander, Krishna Prabhu, Mahasampath Gowri S, Srinivasa Babu Krothapalli
Objective: Motor impairments related to hand function are common symptoms in patients with movement disorders, such as Parkinson's disease (PD) and focal hand dystonia (FHD). However, hand dysfunction has not been quantitatively assessed as a clinical tool for screening patient groups from healthy controls (HCs). The aim of our study was 1) to quantitatively assess hand dysfunction in patients with PD and FHD and its usefulness as a screening tool 2) to grade disease severity in PD and FHD based on hand dysfunction...
January 11, 2018: Journal of Movement Disorders
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