keyword
MENU ▼
Read by QxMD icon Read
search

Throwers

keyword
https://www.readbyqxmd.com/read/27886835/shoulder-injuries-in-the-overhead-throwing-athlete
#1
REVIEW
Ryan A Mlynarek, Simon Lee, Asheesh Bedi
The overhead pitching motion is a coordinated sequence of movements that subjects the shoulder to extreme forces. The ultimate goal of this complex, dynamic activity is to generate high ball velocity and accuracy. In doing so, repetitive throwing can cause adaptive and pathologic changes in the thrower's shoulder. This article reviews the relevant shoulder anatomy, the kinetic chain, and throwing mechanics, as well as common shoulder injuries and surgical options for the treating orthopedic surgeon.
February 2017: Hand Clinics
https://www.readbyqxmd.com/read/27864504/youth-baseball-pitching-stride-length-normal-values-and-correlation-with-field-testing
#2
Karl E Fry, Andrew Pipkin, Kelcie Wittman, Scott Hetzel, Marc Sherry
BACKGROUND: Pitching biomechanical analysis has been recommended as an important component of performance, injury prevention, and rehabilitation. Normal values for youth pitching stride length have not been established, leading to application of normative values found among professional pitchers to youth pitchers. HYPOTHESES: The average youth pitching stride length will be significantly less than that of college and professional pitchers. There will be a positive correlation between stride length, lower extremity power, balance, and pitching experience...
November 18, 2016: Sports Health
https://www.readbyqxmd.com/read/27852593/humeral-retrotorsion-and-glenohumeral-motion-in-youth-baseball-players-compared-with-age-matched-nonthrowing-athletes
#3
Elliot M Greenberg, J Todd R Lawrence, Alicia Fernandez-Fernandez, Philip McClure
BACKGROUND: Baseball players exhibit a more posteriorly oriented humeral head in their throwing arm. This is termed humeral retrotorsion (HRT) and likely represents a response to the stress of throwing. This adaptation is thought to occur while the athlete is skeletally immature, however currently there is limited research detailing how throwing activity in younger players influences the development of HRT. In addition, it is presently unclear how this changing osseous orientation may influence shoulder motion within young athletes...
November 16, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27825229/the-influence-of-coronene-super-hydrogenation-on-the-coronene-graphite-interaction
#4
Anders W Skov, Mie Andersen, John D Thrower, Bjarke Jørgensen, Bjørk Hammer, Liv Hornekær
The changes in the strength of the interaction between the polycyclic aromatic hydrocarbon, coronene, and graphite as a function of the degree of super-hydrogenation of the coronene molecule are investigated using temperature programmed desorption. A decrease in binding energy is observed for increasing degrees of super-hydrogenation, from 1.78 eV with no additional hydrogenation to 1.43 eV for the fully super-hydrogenated molecule. Density functional theory calculations using the optB88-vdW functional suggest that the decrease in binding energy is mostly due to an increased buckling of the molecule rather than the associated decrease in the number of π-electrons...
November 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/27811520/shoulder-and-elbow-injuries-in-the-adolescent-athlete
#5
Mia Smucny, Joel Kolmodin, Paul Saluan
With the recent increase in youth sports participation and single-sport youth athletes over the past 30 years, there has been an increase in the number of acute and overuse sports injuries in this population. This review focuses on overuse and traumatic injuries of the shoulder and elbow in young athletes. In particular we discuss little league shoulder, glenohumeral internal rotation deficit, glenohumeral instability, superior labrum anterior posterior lesions, Little League elbow, Panner disease, osteochondritis dissecans of the capitellum, posteromedial elbow impingement, and posterolateral rotatory instability of the elbow...
December 2016: Sports Medicine and Arthroscopy Review
https://www.readbyqxmd.com/read/27777822/the-role-of-dynamic-4d-ct-in-the-detection-of-scapholunate-ligament-injury
#6
Sanjeev Kakar, Ryan E Breighner, Shuai Leng, Cynthia H McCollough, Steven L Moran, Richard A Berger, Kristin D Zhao
Background Scapholunate (SL) interosseus ligament injuries detected at an early stage could allow the surgeon to prevent progression through the spectrum of injury that leads to instability, and eventually osteoarthritis. We contend that early instability following injury can be detected by visualizing the relative motions and distances between the involved carpal bones (scaphoid and lunate) during wrist movement in vivo. The purpose of this study is to demonstrate the utility of dynamic CT (i.e., 4DCT) in diagnosing SL interosseus ligament injuries in two patients with clinical suspicion of SL interosseus ligament injury during flexion-extension (FE), radial-ulnar (RU) deviation, and dart thrower's (DT) motions...
November 2016: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/27742247/fresh-osteochondral-allograft-transplantation-for-osteochondritis-dissecans-of-the-capitellum-in-baseball-players
#7
Raffy Mirzayan, Michael J Lim
BACKGROUND: Osteochondritis dissecans (OCD) of the capitellum is a rare yet debilitating injury seen in young athletes. This is the first report in the literature describing fresh osteochondral allograft transplantation (FOCAT) to treat OCD of the capitellum. METHODS: Nine male baseball players (mean age, 15.3; range, 14-18 years), with OCD of the capitellum were treated with FOCAT. There were 6 pitchers and 3 position players. A ligament-sparing, mini-open approach was used...
November 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27693967/rna-seq-reveals-differential-gene-expression-in-the-brains-of-juvenile-resident-and-migratory-smolt-rainbow-trout-oncorhynchus-mykiss
#8
Matthew C Hale, Garrett J McKinney, Frank P Thrower, Krista M Nichols
Many migratory traits are heritable, but there is a paucity of evidence identifying the molecular mechanisms underlying differentiation in alternative migratory tactics, or in linking variation in gene expression to migratory behaviors. To that end, we examined differential gene expression in the brain transcriptome between young steelhead trout that had undergone the smoltification process, and resident rainbow trout (Oncorhynchus mykiss) from Sashin Creek, Alaska. Samples were sequenced from two time points: immediately before (at 20months of age) and during (2years of age) the presumed peak of smoltification...
September 4, 2016: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/27649519/computational-study-of-the-interactions-between-benzene-and-crystalline-ice-ih-ground-and-excited-states
#9
Divya Sharma, Wmc Sameera, Stefan Andersson, Gunnar Nyman, Martin J Paterson
Ground state geometries of benzene on crystalline ice cluster model surfaces (Ih) are investigated. It is found that the binding energies of benzene-bound ice complexes are sensitive to the dangling features of the binding sites. We used time-dependent DFT to study the UV spectroscopy of benzene, ice clusters, and benzene-ice complexes, employing the M06-2X functional. It is observed that the size of the ice cluster and the dangling features show minor effects on the UV spectral characteristics. Benzene-mediated electronic excitations of water towards longer wavelengths (above 170 nm) are noticed in benzene-bound ice clusters, where the cross-section of photon absorption water is negligible, in good agreement with recent experimental results (Thrower et al...
September 20, 2016: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/27618241/elbow-injuries-in-the-young-throwing-athlete
#10
Benjamin L Oshlag, Tracy R Ray
Baseball pitchers and other throwing athletes place their elbows under tremendous stresses, making them vulnerable to a number of unique injuries. Skeletally immature throwers in particular are at a greater risk for growth plate and other bony injuries, due to the relative strengths of these tissues and the kinematics involved in throwing. Care should be taken to fully evaluate these injuries based on the particular history and presentation to properly direct treatment and rehabilitation. Patients, as well as other athletes, coaches, and families, also should be made aware of the significant risk factors for these injuries, especially those regarding pitch limits, proper mechanics, and sufficient rest...
September 2016: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/27610314/a-wireless-sensor-system-for-a-biofeedback-training-of-hammer-throwers
#11
Ye Wang, Bingjun Wan, Hua Li, Gongbing Shan
Hammer-throw has a long-standing history in track and field, but unlike some other sports events, men's hammer throw has not seen a new world record since 1986. One of the possible reasons for this stagnation could be the lack of real-time biomechanical feedback training. In this study, we proposed to establish scientifically described training targets and routes, which in turn required tools that could measure and quantify characteristics of an effective hammer-throw. Towards this goal, we have developed a real-time biomechanical feedback device-a wireless sensor system-to help the training of hammer-throw...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27601773/association-analysis-of-ace-actn3-and-ppargc1a-gene-polymorphisms-in-two-cohorts-of-european-strength-and-power-athletes
#12
V Gineviciene, A Jakaitiene, M O Aksenov, A V Aksenova, A M Druzhevskaya, I V Astratenkova, E S Egorova, L J Gabdrakhmanova, L Tubelis, V Kucinskas, A Utkus
The performance of professional strength and power athletes is influenced, at least partly, by genetic components. The main aim of this study was to investigate individually and in combination the association of ACE (I/D), ACTN3 (R577X) and PPARGC1A (Gly482Ser) gene polymorphisms with strength/power-oriented athletes' status in two cohorts of European athletes. A cohort of European Caucasians from Russia and Lithuania (161 athletes: by groups - weightlifters (87), powerlifters (60), throwers (14); by elite status - 'elite' (104), 'sub-elite' (57); and 1,202 controls) were genotyped for ACE, ACTN3 and PPARGC1A polymorphisms...
September 2016: Biology of Sport
https://www.readbyqxmd.com/read/27590172/baseball-players-with-an-ulnar-collateral-ligament-tear-display-increased-nondominant-arm-humeral-torsion-compared-with-healthy-baseball-players
#13
Casey J Meyer, J Craig Garrison, John E Conway
BACKGROUND: Previous work has suggested that an increase in the amount of developmentally acquired, dominant arm humeral retrotorsion (D HRT) in the thrower's shoulder may be a potentially protective mechanism. Although the relationship between HRT and shoulder injuries has been reported, the relationship between HRT and ulnar collateral ligament (UCL) tears in baseball players is not known. PURPOSE: To determine whether D HRT and nondominant arm HRT (ND HRT) measurements in baseball players with a UCL tear differ statistically from a matched healthy cohort...
September 2, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27575250/changes-in-muscle-architecture-explosive-ability-and-track-and-field-throwing-performance-throughout-a-competitive-season-and-following-a-taper
#14
Caleb D Bazyler, Satoshi Mizuguchi, Alex P Harrison, Kimitake Sato, Ashley A Kavanaugh, Brad H DeWeese, Michael H Stone
The purpose of this study was to examine the effects of an overreach and taper on measures of muscle architecture, jumping, and throwing performance in Division I collegiate throwers preparing for conference championships. Six collegiate track and field throwers (3 hammer, 2 discus, 1 javelin) trained for 12 weeks using a block-periodization model culminating with a one week overreach followed by a 3 week taper (ORT). Session rating of perceived exertion training load (RPETL) and strength training volume-load times bar displacement (VLd) were recorded weekly...
August 26, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27570228/changes-in-wrist-motion-after-simulated-scapholunate-arthrodesis-a-cadaveric-study
#15
Kevin D Han, Jaehon M Kim, Michael V DeFazio, Ricardo J Bello, Ryan D Katz, Brent G Parks, Kenneth R Means
PURPOSE: A high incidence of nonunion and relatively poor outcomes with prior fixation techniques has precluded scapholunate (SL) arthrodesis as a standard treatment for SL instability. Our purpose was to determine the impact on range of motion (ROM) of simulated SL arthrodesis via headless screw fixation. METHODS: We performed baseline wrist ROM for 10 cadaveric wrists using a standardized mounting-and-weights system. Extension, flexion, radial deviation, ulnar deviation, dart-thrower's extension, and dart-thrower's flexion were assessed...
September 2016: Journal of Hand Surgery
https://www.readbyqxmd.com/read/27552453/platelet-rich-plasma-can-be-used-to-successfully-treat-elbow-ulnar-collateral-ligament-insufficiency-in-high-level-throwers
#16
Joshua S Dines, Phillip N Williams, Neal ElAttrache, Stan Conte, Todd Tomczyk, Daryl C Osbahr, David M Dines, James Bradley, Christopher S Ahmad
We conducted a study to evaluate the effect of platelet-rich plasma (PRP) injections on partial ulnar collateral ligament (UCL) tears in high-level throwing athletes. We retrospectively reviewed the cases of 44 baseball players (6 professional, 14 college, 24 high school) treated with PRP injections for partial-thickness UCL tears. All tears were diagnosed by physical examination and confirmed by magnetic resonance imaging (MRI). Sixteen patients had 1 injection, 6 had 2, and 22 had 3. Once patients became asymptomatic after injection, they were started on an interval throwing program...
July 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27545422/multimodality-imaging-of-the-painful-elbow-current-imaging-concepts-and-image-guided-treatments-for-the-injured-thrower-s-elbow
#17
REVIEW
Cristy N Gustas, Kenneth S Lee
Elbow pain in overhead sport athletes is not uncommon. Repetitive throwing can lead to chronic overuse and/or acute injury to tendons, ligaments, bones, or nerves about the elbow. A thorough history and physical examination of the thrower's elbow frequently establishes the diagnosis for pain. Imaging can provide additional information when the clinical picture is unclear or further information is necessary for risk stratification and treatment planning. This article focuses on current imaging concepts and image-guided treatments for injuries commonly affecting the adult throwing athlete's elbow...
September 2016: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/27545421/pathomechanics-and-magnetic-resonance-imaging-of-the-thrower-s-shoulder
#18
REVIEW
I-Yuan Joseph Chang, Joshua M Polster
Repetitive, high-velocity overhead throwing can lead to several adaptive changes in the throwing shoulder, which over time lead to structural microtrauma and eventually overt injury. MR imaging is a useful imaging modality to evaluate these changes and to characterize their acuity and severity. Understanding the throwing motion and the effects of this motion on the structures of the shoulder can help radiologists to recognize these findings and provide useful information to referring physicians, which may affect the treatment of these athletes...
September 2016: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/27543399/return-to-play-after-shoulder-surgery-in-throwers
#19
REVIEW
Robert Thorsness, Jeremy A Alland, Colin B McCulloch, Anthony Romeo
The throwing athlete's shoulder is a unique, complex entity with challenges in diagnosis and management. The shoulders in these athletes possess unique biomechanics and pathologic conditions. Unfortunately, return to play outcomes are often poor when specifically evaluating overhead athletes, especially with regard to SLAP repair. It is imperative for the surgeon to be cautious when indicating these athletes for surgery, because although they may demonstrate improvements in pain and general function, subtle changes in accuracy or velocity as a result of surgery can significantly affect the success of an overhead throwing athlete at the competitive level...
October 2016: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27532882/atomistic-scale-simulations-of-defect-formation-in-graphene-under-noble-gas-ion-irradiation
#20
Kichul Yoon, Ali Rahnamoun, Jacob L Swett, Vighter Iberi, David A Cullen, Ivan V Vlassiouk, Alex Belianinov, Stephen Jesse, Xiahan Sang, Olga S Ovchinnikova, Adam J Rondinone, Raymond R Unocic, Adri C T van Duin
Despite the frequent use of noble gas ion irradiation of graphene, the atomistic-scale details, including the effects of dose, energy, and ion bombardment species on defect formation, and the associated dynamic processes involved in the irradiations and subsequent relaxation have not yet been thoroughly studied. Here, we simulated the irradiation of graphene with noble gas ions and the subsequent effects of annealing. Lattice defects, including nanopores, were generated after the annealing of the irradiated graphene, which was the result of structural relaxation that allowed the vacancy-type defects to coalesce into a larger defect...
September 27, 2016: ACS Nano
keyword
keyword
93779
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"