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https://www.readbyqxmd.com/read/29746146/predictors-of-elbow-torque-among-youth-and-adolescent-baseball-pitchers
#1
Kelechi R Okoroha, Vincent A Lizzio, Fabien Meta, Christopher S Ahmad, Vasilios Moutzouros, Eric C Makhni
BACKGROUND: There has been an increasing incidence of overuse elbow injuries among youth and adolescent pitchers. Pitch type has been implicated as a risk factor for excess torque at the medial elbow; however, this has not been definitively demonstrated. PURPOSE: To assess predictors of torque across the medial elbow in youth and adolescent pitchers with a mobile sensor. In addition, the authors aimed to determine the differences in elbow torque produced according to pitch type (fastball, curveball, changeup) and pitcher demographics...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29731723/would-you-use-it-with-a-seal-of-approval-important-attributes-of-2-4-dinitrophenol-2-4-dnp-as-a-hypothetical-pharmaceutical-product
#2
Emma E Bleasdale, Sam N Thrower, Andrea Petróczi
Background: 2,4-Dinitrophenol (2,4-DNP) is an effective but highly dangerous fat burner, not licensed for human consumption. Death cases reported for 2,4-DNP overdose, particularly among young adults, have raised concerns about the ineffective regulatory control, lack of education and risks associated with impurity, and the unknown concentration of 2,4-DNP purchased on the Internet. Methods: Using a sequential mixed method design and based on a hypothetical scenario as if 2,4-DNP was a licensed pharmaceutical drug, first we conducted a qualitative study to explore what product attributes people consider when buying a weight-loss aid...
2018: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/29712921/on-surface-synthesis-of-a-nitrogen-embedded-buckybowl-with-inverse-stone-thrower-wales-topology
#3
Shantanu Mishra, Maciej Krzeszewski, Carlo A Pignedoli, Pascal Ruffieux, Roman Fasel, Daniel T Gryko
Curved π-conjugated polycyclic aromatic hydrocarbons, buckybowls, constitute an important class of materials with wide applications in materials science. Heteroatom doping of buckybowls is a viable route to tune their intrinsic physicochemical properties. However, synthesis of heteroatom-doped buckybowls is a challenging task. We report on a combined in-solution and on-surface synthetic strategy toward the fabrication of a buckybowl containing two fused nitrogen-doped pentagonal rings. We employ ultra-high-resolution scanning tunneling microscopy and spectroscopy, in combination with density functional theory calculations to characterize the final compound...
April 30, 2018: Nature Communications
https://www.readbyqxmd.com/read/29712546/can-we-reduce-the-epidemic-of-elbow-injuries-in-youth-throwers
#4
Ajay S Padaki, Christopher S Ahmad
As participation in youth sports continues to increase across the nation, more adolescents are participating in Little League baseball in the United States than ever before. Accompanying this increased participation is an epidemic of upper extremity injuries in young throwers. In this Viewpoint, the authors discuss the impetus behind the youth thrower elbow injury epidemic and how to best evaluate these patients. J Orthop Sports Phys Ther 2018;48(5):354-357. doi:10.2519/jospt.2018.0607.
May 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29703075/thrower-s-fracture-of-the-humerus-a-case-report
#5
Michael G Prucha
Humeral fractures typically occur as the result of direct, external trauma. Here however, we describe the case of a young, amateur athlete presenting with acute right, upper arm pain after throwing a ball. Examination showed right upper arm deformity and tenderness to palpation, without any distal neurovascular deficits. X-ray demonstrated a spiral fracture of the humerus. The patient had operative repair of the injury several days later, with no complications noted on outpatient visits up to 3 months later...
May 1, 2018: Rhode Island Medical Journal
https://www.readbyqxmd.com/read/29601899/longitudinal-changes-in-bone-parameters-in-young-girls-with-anorexia-nervosa
#6
Sheila Shepherd, Andreas Kyriakou, Mohamed Guftar Shaikh, Helen McDevitt, Charlotte Oakley, Michelle Thrower, S Faisal Ahmed, Avril Mason
BACKGROUND: Anorexia nervosa (AN) during childhood and adolescence has been reported to adversely affect bone health, but few studies have investigated longitudinal changes. METHOD: DXA-derived bone parameters and body composition were retrospectively assessed in 111 young girls with AN with a median age of 15.4 years (10.9, 19.8). In 68 (61%) vertebral fracture assessment (VFA) was performed and in 31 (28%), a follow-up DXA was performed. Correlations with growth, changes in body composition and effects of illness duration and menstruation were examined...
March 27, 2018: Bone
https://www.readbyqxmd.com/read/29543080/peak-age-and-performance-progression-in-world-class-track-and-field-athletes
#7
Thomas A Haugen, Paul A Solberg, Carl Foster, Ricardo Morán-Navarro, Felix Breitschädel, Will G Hopkins
The aim of this study was to quantify peak age and improvements over the preceding years to peak age in elite athletic contestants according to athlete performance level, sex and discipline. Individual season bests for world-ranked top 100 athletes from 2002 to 2016 (14937 athletes and 57049 individual results) were downloaded from the International Association of Athletics Federations' web site. Individual performance trends were generated by fitting a quadratic curve separately to each athlete's performance and age data using a linear modeling procedure...
March 15, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29514521/user-surveys-support-designing-a-prosthetic-wrist-that-incorporates-the-dart-thrower-s-motion
#8
Matthew Davidson, Cathy Bodine, Richard F Ff Weir
AIM: Prosthetic devices are not meeting the needs of people with upper limb amputations. Due to controlsidelimitations, prosthetic wrists cannot yet be fully articulated. This study sought to determine which wrist motions users felt were most important for completing activities of daily living. We specifically invstigated whether adding a combinationof flexion and deviation known as the Dart Thrower's Motion to a prosthetic wrist would help improve functionality. METHODS: Fifteen participants with a trans-radial amputation, aged 25-64 years, who use a prosthesis completed an online survey and answered interview questions to determine which types of tasks pose particular challenges...
March 7, 2018: Disability and Rehabilitation. Assistive Technology
https://www.readbyqxmd.com/read/29488999/xuv-photodesorption-of-carbon-cluster-ions-and-ionic-photofragments-from-a-mixed-methane-water-ice
#9
T Suhasaria, J D Thrower, R Frigge, S Roling, M Bertin, X Michaut, J-H Fillion, H Zacharias
The photochemical processing of a CH4  : D2 O 1 : 3.3 ice mixture adsorbed on an HOPG surface in the XUV regime was investigated using pulses obtained from the Free-electron LASer in Hamburg (FLASH) facility. Ice films were exposed to femtosecond pulses with a photon energy of hν = 40.8 eV, consistent with the HeII resonance line. Cationic species desorbing directly from the ice films were detected using time-of-flight (ToF) mass spectrometry. Simple ions formed through the fragmentation of the parent molecules and subsequent recombination reactions were detected and are consistent with efficient D+ and H+ ejection from the parent species, similar to the case for low energy electron irradiation...
March 14, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29479544/ulnar-collateral-ligament-reconstruction-versus-repair-with-internal-bracing-comparison-of-cyclic-fatigue-mechanics
#10
Christopher M Jones, David P Beason, Jeffrey R Dugas
Background: Ulnar collateral ligament (UCL) injuries have increased significantly in recent years, and reconstruction has become the preferred treatment for UCL injury over ligament repair. In a recent study, UCL repair with internal bracing demonstrated significantly greater resistance to gap formation in biomechanical tests, even at low cycles of valgus loading. Purpose/Hypothesis: The purpose of this study was to compare the fatigue and failure mechanics of traditional UCL reconstruction with UCL repair and internal bracing...
February 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29459837/effects-of-relaxing-and-arousing-music-during-imagery-training-on-dart-throwing-performance-physiological-arousal-indices-and-competitive-state-anxiety
#11
Garry Kuan, Tony Morris, Yee Cheng Kueh, Peter C Terry
Music that is carefully selected to match the requirements of activities and the characteristics of individuals has been shown to produce significant impacts on performance enhancement (Priest et al., 2004). There is also evidence that music can enhance imagery (Grocke and Wigram, 2007), although few studies have investigated the effects of music on imagery in the context of sport skills. In the present study, the effects of relaxing and arousing music during imagery on dart-throwing performance, physiological arousal indices, and competitive state anxiety, were investigated among 63 novice dart throwers...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29450826/return-to-throwing-after-shoulder-or-elbow-injury
#12
REVIEW
Terrance A Sgroi, John M Zajac
PURPOSE OF REVIEW: Throwing places high demands on the human body, and specific characteristics are developed over time unique to these athletes. When returning to throw after injury, it is important to follow a criterion-based progression that allows the body to be prepared appropriately for the stresses that throwing will require. There is currently a void in the literature for criteria-based progression that helps these athletes return to the highest level of play. RECENT FINDINGS: As injury rates continue to rise in baseball, there is increased evidence showing contributions of the core and lower extremity to the baseball pitch...
March 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29447302/in-throwers-with-posterior-instability-rotator-cuff-tears-are-common-but-do-not-affect-surgical-outcomes
#13
Justin W Arner, Michael P McClincy, James P Bradley
In a previous study, compared with throwing athletes with superior labral anterior posterior (SLAP) tears, those with concomitant SLAP tears and rotator cuff tears (RCTs) had significantly poorer outcome scores and return to play. Posterior shoulder instability also occurs in throwing athletes, but no studies currently exist regarding outcomes of these patients with concomitant RCTs. The authors hypothesized that throwing athletes treated with arthroscopic capsulolabral repair for posterior shoulder instability with coexistent rotator cuff pathology would have poorer outcome scores and return to play...
January 2018: American Journal of Orthopedics
https://www.readbyqxmd.com/read/29447294/evidence-of-sex-bias-in-gene-expression-in-the-brain-transcriptome-of-two-populations-of-rainbow-trout-oncorhynchus-mykiss-with-divergent-life-histories
#14
COMPARATIVE STUDY
Matthew C Hale, Garrett J McKinney, Frank P Thrower, Krista M Nichols
Sex-bias in gene expression is a mechanism that can generate phenotypic variance between the sexes, however, relatively little is known about how patterns of sex-bias vary during development, and how variable sex-bias is between different populations. To that end, we measured sex-bias in gene expression in the brain transcriptome of rainbow trout (Oncorhynchus mykiss) during the first two years of development. Our sampling included from the fry stage through to when O. mykiss either migrate to the ocean or remain resident and undergo sexual maturation...
2018: PloS One
https://www.readbyqxmd.com/read/29443703/the-thrower-s-shoulder
#15
Jonathan D Gelber, Lonnie Soloff, Mark S Schickendantz
Overhead athletes subject their shoulders to extreme repetitive torque, compression, distraction, and translation stresses, resulting in adaptive changes of the soft tissues and osseous structures within and around the glenohumeral joint. These anatomic adaptations result in biomechanical enhancements, which improve performance. Understanding the difference between necessary and adaptive changes and pathologic findings is critical when making treatment decisions. Injuries to the shoulder of the overhead athlete can be generally classified into three groups: internal impingement, internal impingement with acquired secondary anterior instability, and primary anterior or multidirectional instability...
March 15, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29442213/elbow-injuries-in-the-adolescent-thrower
#16
REVIEW
Timothy B Griffith, James Kercher, S Clifton Willimon, Crystal Perkins, Xavier A Duralde
PURPOSE OF REVIEW: With an increasing rate of adolescent elbow injuries, especially in throwing athletes, the purpose of this review is to investigate the current literature regarding the diagnosis, treatment, and non-operative and operative outcomes of medial epicondyle fractures, ulnar collateral ligament repair, osteochondritis dissecans of the elbow, and olecranon stress fractures. RECENT FINDINGS: Acceptable outcomes with both non-operative and operative treatments of medial epicondyle fractures have been reported, with surgical indications continuing to evolve...
March 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29426741/lower-shoulder-abduction-during-throwing-motion-may-cause-forceful-internal-impingement-and-decreased-anterior-stability
#17
Masaki Akeda, Teruhisa Mihata, Woong Kyo Jeong, Michelle H McGarry, Tetsuya Yamazaki, Thay Q Lee
BACKGROUND: Internal impingement and decreased anterior stability, which result from shoulder capsular loosening, are common shoulder pathologies in throwing athletes. The purpose of this study was to assess the effect of shoulder abduction angle on shoulder internal impingement and anterior shoulder stability during the simulated throwing motion. METHODS: Eight cadaveric shoulders were tested by simulating the late-cocking and acceleration phases of the throwing motion for intact and thrower's shoulder conditions...
February 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29389689/a-development-and-feasibility-study-of-a-peer-support-telephone-program-in-rheumatoid-arthritis
#18
Nancy A Shadick, Melanie J Zibit, Christine K Iannaccone, Rebecca Thrower, Nancy F Sowell, Michael E Weinblatt, Daniel Hal Solomon, Jing Cui
No abstract text is available yet for this article.
February 1, 2018: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29387638/quantitative-analysis-of-patellar-tendon-size-and-structure-in-asymptomatic-professional-players-sonographic-study
#19
Maurizio Giacchino, Cristina Caresio, Negar E Gorji, Filippo Molinari, Giuseppe Massazza, Marco Alessandro Minetto
Background: Ultrasonographic abnormalities of the patellar tendon frequently occur in asymptomatic athletes and it is not always clear whether they precede (and may predict) the development of tendinopathy. Objective: This study aimed to investigate by ultrasonography the prevalence of patellar tendon abnormalities in players of "pallapugno" and to establish whether structural tendon abnormalities predict tendinopathy development. Methods: Ultrasound B-mode images of the patellar tendon of both sides were acquired in fourteen throwers...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29368539/safety-and-efficacy-of-ads-5102-amantadine-extended-release-capsules-to-improve-walking-in-multiple-sclerosis-a-randomized-placebo-controlled-phase-2-trial
#20
Jeffrey A Cohen, Samuel F Hunter, Theodore R Brown, Mark Gudesblatt, Ben W Thrower, Lily Llorens, Cindy J Souza-Prien, April E Ruby, David N Chernoff, Rajiv Patni
BACKGROUND: Walking impairment causes disability and reduced quality of life in patients with multiple sclerosis (MS). OBJECTIVE: Characterize the safety and efficacy of ADS-5102 (amantadine) extended release capsules, 274 mg administered once daily at bedtime in patients with MS with walking impairment. METHODS: This randomized, double-blind, placebo-controlled, 4-week study was conducted at 14 trial sites in the United States. Study objectives included safety and tolerability of ADS-5102, and efficacy assessments (Timed 25-Foot Walk (T25FW), Timed Up and Go (TUG), 2-Minute Walk Test, and Multiple Sclerosis Walking Scale-12)...
January 1, 2018: Multiple Sclerosis: Clinical and Laboratory Research
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