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https://www.readbyqxmd.com/read/28545717/preseason-screening-of-shoulder-range-of-motion-and-humeral-retrotorsion-does-not-predict-injury-in-high-school-baseball-players
#1
Sakiko Oyama, Elizabeth E Hibberd, Joseph B Myers
BACKGROUND: Shoulder and elbow injuries are commonplace in high school baseball. Although altered shoulder range of motion (ROM) and humeral retrotorsion angles have been associated with injuries, the efficacy of preseason screening of these characteristics remains controversial. METHODS: We conducted preseason screenings for shoulder internal and external rotation ROM and humeral retrotorsion on 832 high school baseball players and tracked their exposure and incidence on throwing-related shoulder and elbow injuries during a subsequent season...
May 22, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28533452/fluorescence-as-a-means-of-colour-signal-enhancement
#2
REVIEW
Justin Marshall, Sonke Johnsen
Fluorescence is a physico-chemical energy exchange where shorter-wavelength photons are absorbed by a molecule and are re-emitted as longer-wavelength photons. It has been suggested a means of communication in several taxa including flowers, pitcher plants, corals, algae, worms, squid, spiders, stomatopods, fish, reptiles, parrots and humans. The surface or object that the pigment molecule is part of appears to glow due to its setting rather than an actual production of light, and this may enhance both signals and, in some cases, camouflage...
July 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28532867/ultrasound-study-of-elbow-ulnar-collateral-ligament-changes-in-collegiate-baseball-players-a-pilot-study
#3
Johnathan Erb, Heather Sherman, Sydney Williard, Julien Bui, Aimie Kachingwe
OBJECTIVE: To assess changes in elbow ulnar collateral ligament length in college baseball pitchers over the course of a single season. DESIGN: Cohort Feasibility Study. METHODS: Diagnostic ultrasound was used to assess both the dominant and non-dominant medial elbow joint space in four pitchers and five fielders and compared to in-game pitching data. Shoulder, elbow, wrist, hip, knee, and ankle range of motion measurements were also taken...
April 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28530502/the-effect-of-stride-length-and-lateral-pelvic-tilt-on-elbow-torque-in-youth-baseball-pitchers
#4
Noah X Tocci, David R Howell, Dai Sugimoto, Corey Dawkins, Amy Whited, Donald Bae
High elbow torque during a pitch may contribute to injury risk. Our objective was to determine the pitch mechanics associated with elbow varus torque in youth baseball pitchers. Eighteen male youth pitchers (age=15.5±1.6 years) threw three fastballs and three change-ups from a windup position while undergoing three-dimensional kinematic analysis. Independent variables included ball release point distance, stride length, lateral pelvic tilt, and ball velocity. Two multiple regression models, separated by pitch type (fastball, change-up) were used to determine the association of independent variables with peak varus torque at the elbow...
May 22, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28529881/iso-seq-analysis-of-nepenthes-ampullaria-nepenthes-rafflesiana-and-nepenthes%C3%A2-%C3%A3-%C3%A2-hookeriana-for-hybridisation-study-in-pitcher-plants
#5
Muhammad Mu'izzuddin Zulkapli, Muhammad Aqil Fitri Rosli, Faris Imadi Mohd Salleh, Normah Mohd Noor, Wan Mohd Aizat, Hoe-Han Goh
Tropical pitcher plants in the species-rich Nepenthaceae family of carnivorous plants possess unique pitcher organs. Hybridisation, natural or artificial, in this family is extensive resulting in pitchers with diverse features. The pitcher functions as a passive insect trap with digestive fluid for nutrient acquisition in nitrogen-poor habitats. This organ shows specialisation according to the dietary habit of different Nepenthes species. In this study, we performed the first single-molecule real-time isoform sequencing (Iso-Seq) analysis of full-length cDNA from Nepenthes ampullaria which can feed on leaf litter, compared to carnivorous Nepenthes rafflesiana, and their carnivorous hybrid Nepenthes × hookeriana...
June 2017: Genomics Data
https://www.readbyqxmd.com/read/28515886/aquatic-microfauna-alter-larval-food-resources-and-affect-development-and-biomass-of-west-nile-and-saint-louis-encephalitis-vector-culex-nigripalpus-diptera-culicidae
#6
Dagne Duguma, Michael G Kaufman, Arthur B Simas Domingos
Ciliate protists and rotifers are ubiquitous in aquatic habitats and can comprise a significant portion of the microbial food resources available to larval mosquitoes, often showing substantial declines in abundance in the presence of mosquito larvae. This top-down regulation of protists is reported to be strong for mosquitoes inhabiting small aquatic containers such as pitcher plants or tree holes, but the nature of these interactions with larval mosquitoes developing in other aquatic habitats is poorly understood...
May 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28513271/college-pitchers-demonstrate-directional-differences-in-shoulder-joint-position-sense-compared-to-controls
#7
John Andrew Badagliacco, Andrew Karduna
CONTEXT: The relationship between overhead throwing and its effect on proprioception is not well understood. It is important to gain a better understanding of how these are related to protect overhead athletes from an increased risk of injury. OBJECTIVE: To investigate proprioceptive alterations in the overhead thrower's shoulder. DESIGN: Cross-Sectional Study. Independent variables are: limb (dominant and non-dominant), group (thrower or control), and target angle...
May 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28504915/prevalence-of-os-styloideum-in-national-hockey-league-players
#8
Harry G Greditzer, Ian D Hutchinson, Christian S Geannette, Robert N Hotchkiss, Bryan T Kelly, Hollis G Potter
BACKGROUND: Os styloideum describes an accessory carpal ossicle between the trapezoid, the capitate, and the second and third metacarpals. Injuries to this tissue have been described as part of the carpal boss syndrome. While the etiology of os styloideum remains uncertain, it may represent a physiologic response to altered loading forces in the wrist, similar to the development of cam-type deformity in the hips of ice hockey players or the Bennett lesion in the shoulders of baseball pitchers...
May 1, 2017: Sports Health
https://www.readbyqxmd.com/read/28500954/finger-forces-in-fastball-baseball-pitching
#9
Hiroshi Kinoshita, Satoshi Obata, Daiki Nasu, Koji Kadota, Tomoyuki Matsuo, Glenn S Fleisig
Forces imparted by the fingers onto a baseball are the final, critical aspects for pitching, however these forces have not been quantified previously as no biomechanical technology was available. In this study, an instrumented baseball was developed for direct measurement of ball reaction force by individual fingers and used to provide fundamental information on the forces during a fastball pitch. A tri-axial force transducer with a cable having an easily-detachable connector were installed in an official baseball...
May 10, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28486333/the-relationship-between-the-push-off-ground-reaction-force-and-ball-speed-in-high-school-baseball-pitchers
#10
Sakiko Oyama, Joseph B Myers
Baseball pitching is a sequential movement that requires transfer of momentum from the lower extremity to the throwing arm. Therefore, the ground reaction force (GRF) during push off is suggested to play a roll in production of ball speed. The purpose of this study was to investigate the correlation between GRF characteristics during push off and ball speed in high school baseball pitchers. A total of 52 pitchers performed fast pitches from an indoor pitching mound. A force plate embedded in an indoor mound was used to capture the push off GRF...
May 5, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28478963/shoulder-and-elbow-pain-in-elementary-school-baseball-players-the%C3%A2-results-from-a-nation-wide-survey-in-japan
#11
Kenji Takagishi, Tetsuya Matsuura, Takashi Masatomi, Etsuo Chosa, Tsuyoshi Tajika, Mikihiko Watanabe, Tetsu Iwama, Toshiro Otani, Katsunori Inagaki, Hiroyasu Ikegami, Mitsuhiro Aoki, Ko Kato, Toru Okuwaki, Koichi Sairyo, Yasushi Kameyama, Akira Maeda, Moroe Beppu
BACKGROUND: Despite recommendations on how to prevent baseball injuries in youths by the Japanese Society of Clinical Sports Medicine, shoulder and elbow pain still frequently occurs in young baseball players. We conducted a questionnaire survey among baseball players at elementary schools across the country to understand the practice conditions of players, examining the risk factors of shoulder and elbow pain in baseball players. METHODS: The questionnaire survey was conducted among elementary school baseball players as members of the Baseball Federation of Japan in September 2015...
May 3, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28467401/genetic-architecture-of-gene-transcription-in-two-atlantic-salmon-salmo-salar-populations
#12
X He, A L S Houde, T E Pitcher, D D Heath
Gene expression regulation has an important role in short-term acclimation and long-term adaptation to changing environments. However, the genetic architecture of gene expression has received much less attention than that of traditional phenotypic traits. In this study, we used a 5 × 5 full-factorial breeding design within each of two Atlantic salmon (Salmo salar) populations to characterize the genetic architecture of gene transcription. The two populations (LaHave and Sebago) are being used for reintroduction efforts into Lake Ontario, Canada...
May 3, 2017: Heredity
https://www.readbyqxmd.com/read/28464115/consumer-sensory-evaluation-and-chemical-composition-of-beef-gluteus-medius-and-triceps-brachii-steaks-from-cattle-finished-on-forage-or-concentrate-diets
#13
A Chail, J F Legako, L R Pitcher, R E Ward, S Martini, J W MacAdam
The objective of this study was to assess the impact of cattle finishing diet and muscle type on meat quality. Consumer sensory response, proximate composition, Warner-Bratzler shear force (WBSF), fatty acid composition, and volatile compounds were assessed from the gluteus medius (GM) and triceps brachii (TB) muscles of cattle ( = 6 per diet) which were grain-finished (USUGrain) on conventional feedlot or 2 forage diets, a perennial legume, birdsfoot trefoil-finished (USUBFT; ), and grass-finished (USUGrass; )...
April 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28451614/the-functional-arm-scale-for-throwers-fast-part-ii-reliability-and-validity-of-an-upper-extremity-region-specific-and-population-specific-patient-reported-outcome-scale-for-throwing-athletes
#14
Kellie C Huxel Bliven, Alison R Snyder Valier, R Curtis Bay, Eric L Sauers
BACKGROUND: The Functional Arm Scale for Throwers (FAST) is an upper extremity (UE) region-specific and population-specific patient-reported outcome (PRO) scale developed to measure health-related quality of life in throwers with UE injuries. Stages I and II, described in a companion paper, of FAST development produced a 22-item scale and a 9-item pitcher module. Stage III of scale development, establishing reliability and validity of the FAST, is reported herein. PURPOSE: To describe stage III of scale development: reliability and validity of the FAST...
April 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451608/the-functional-arm-scale-for-throwers-fast-part-i-the-design-and-development-of-an-upper-extremity-region-specific-and-population-specific-patient-reported-outcome-scale-for-throwing-athletes
#15
Eric L Sauers, R Curtis Bay, Alison R Snyder Valier, Traci Ellery, Kellie C Huxel Bliven
BACKGROUND: Upper extremity (UE) region-specific, patient-reported outcome (PRO) scales assess injuries to the UE but do not account for the demands of overhead throwing athletes or measure patient-oriented domains of health-related quality of life (HRQOL). PURPOSE: To develop the Functional Arm Scale for Throwers (FAST), a UE region-specific and population-specific PRO scale that assesses multiple domains of disablement in throwing athletes with UE injuries. In stage I, a beta version of the scale was developed for subsequent factor identification, final item reduction, and construct validity analysis during stage II...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451602/exceeding-pitch-count-recommendations-in-little-league-baseball-increases-the-chance-of-requiring-tommy-john-surgery-as-a-professional-baseball-pitcher
#16
Brandon J Erickson, Peter N Chalmers, Michael J Axe, Anthony A Romeo
BACKGROUND: Empirical evidence has suggested a connection between youth pitch counts and subsequent elbow injury. For players within the Little League World Series (LLWS), detailed historical player data are available. Some of these players progress to both professional play and require an ulnar collateral ligament reconstruction (UCLR). PURPOSE: To determine the percentage of LLWS pitchers who proceed to play professional (major or minor league) baseball, the rate of UCLR in former LLWS pitchers who played professional baseball, and the risk to those who exceeded current pitch count recommendations while playing in the LLWS...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28451598/epidemiology-and-impact-of-abdominal-oblique-injuries-in-major-and-minor-league-baseball
#17
Christopher L Camp, Stan Conte, Steven B Cohen, Matthew Thompson, John D' Angelo, Joseph T Nguyen, Joshua S Dines
BACKGROUND: Oblique injuries are known to be a common cause of time out of play for professional baseball players, and prior work has suggested that injury rates may be on the rise in Major League Baseball (MLB). PURPOSE: To better understand the current incidence of oblique injuries, determine their impact based on time out of play, and to identify common injury patterns that may guide future injury prevention programs. STUDY DESIGN: Descriptive epidemiological study...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28426624/a-randomized-double-blind-placebo-control-pilot-study-of-eplerenone-for-the-treatment-of-central-serous-chorioretinopathy-ecselsior
#18
Ehsan Rahimy, John D Pitcher, Jason Hsu, Murtaza K Adam, Abtin Shahlaee, Wasim A Samara, James F Vander, Richard S Kaiser, Allen Chiang, Marc J Spirn, Mitchell S Fineman
PURPOSE: To evaluate the safety and effects of oral eplerenone in chronic central serous chorioretinopathy. METHODS: Prospective, randomized, double-blind, placebo-control study at a tertiary referral academic private practice. For a diagnosis of chronic central serous chorioretinopathy, patients must have had at least 3 months clinical follow-up demonstrating persistent symptoms, subfoveal fluid on spectral-domain optical coherence tomography, and <50% reduction in fluid thickness...
April 19, 2017: Retina
https://www.readbyqxmd.com/read/28401597/unidirectional-wetting-properties-on-multi-bioinspired-magnetocontrollable-slippery-microcilia
#19
Moyuan Cao, Xu Jin, Yun Peng, Cunming Yu, Kan Li, Kesong Liu, Lei Jiang
Here, a smart fluid-controlled surface is designed, via the rational integration of the unique properties of three natural examples, i.e., the unidirectional wetting behaviors of butterfly's wing, liquid-infused "slippery" surface of the pitcher plant, and the motile microcilia of micro-organisms. Anisotropic wettability, lubricated surfaces, and magnetoresponsive microstructures are assembled into one unified system. The as-prepared surface covered by tilted microcilia achieves significant unidirectional droplet adhesion and sliding...
April 12, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28398820/magnetic-resonance-imaging-predictors-of-failure-in-the-nonoperative-management-of-ulnar-collateral-ligament-injuries-in-professional-baseball-pitchers
#20
Salvatore J Frangiamore, T Sean Lynch, Michael D Vaughn, Lonnie Soloff, Michael Forney, Joseph F Styron, Mark S Schickendantz
BACKGROUND: A medial ulnar collateral ligament (UCL) injury of the elbow is an increasingly common injury in professional baseball pitchers. Predictors of success and failure are not well defined for the nonoperative management of these injuries. PURPOSE: To evaluate the efficacy of objective measures to predict failure of the nonoperative management of UCL injuries. STUDY DESIGN: Case-control study; Level of evidence, 3. METHODS: Thirty-two professional pitchers (82%) met inclusion criteria and underwent an initial trial of nonoperative treatment for UCL tears based on clinical and radiological findings...
April 1, 2017: American Journal of Sports Medicine
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