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https://www.readbyqxmd.com/read/28203588/return-to-play-and-prior-performance-in-major-league-baseball-pitchers-after-repair-of-superior-labral-anterior-posterior-tears
#1
Ryan Smith, Daniel J Lombardo, Graysen R Petersen-Fitts, Charles Frank, Troy Tenbrunsel, Gannon Curtis, James Whaley, Vani J Sabesan
BACKGROUND: The published return-to-play (RTP) rates for Major League Baseball (MLB) pitchers who have undergone surgical repair of superior labrum anterior-posterior (SLAP) tears vary widely and are generally accepted to be lower in the subset of competitive throwers. The efficacy of surgical treatment for MLB players is largely unknown. PURPOSE: To examine the RTP rate and performance of MLB pitchers who have undergone SLAP tear repair between 2003 and 2010. STUDY DESIGN: Descriptive epidemiological study...
December 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28187157/distinct-eye-movement-patterns-enhance-dynamic-visual-acuity
#2
Dimitrios J Palidis, Pearson A Wyder-Hodge, Jolande Fooken, Miriam Spering
Dynamic visual acuity (DVA) is the ability to resolve fine spatial detail in dynamic objects during head fixation, or in static objects during head or body rotation. This ability is important for many activities such as ball sports, and a close relation has been shown between DVA and sports expertise. DVA tasks involve eye movements, yet, it is unclear which aspects of eye movements contribute to successful performance. Here we examined the relation between DVA and the kinematics of smooth pursuit and saccadic eye movements in a cohort of 23 varsity baseball players...
2017: PloS One
https://www.readbyqxmd.com/read/28160922/relative-individual-workload-changes-may-be-a-risk-factor-for-rerupture-of-ulnar-collateral-ligament-reconstruction
#3
Robert A Keller, Nima Mehran, Lafi S Khalil, Christopher S Ahmad, Neal ElAttrache
BACKGROUND: With an increasing number of Major League Baseball (MLB) players undergoing ulnar collateral ligament (UCL) reconstruction, there remains limited literature on appropriate post-reconstruction workload management to limit the risk of reinjury. METHODS: A total of 28 MLB pitchers who underwent primary UCL reconstruction surgery and subsequently required revision reconstruction were identified and compared with 137 MLB pitchers who underwent primary reconstruction but did not later require revision surgery...
March 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28157450/changes-in-lower-extremity-kinematics-and-temporal-parameters-of-adolescent-baseball-pitchers-during-an-extended-pitching-bout
#4
Stacey M Kung, Sarah P Shultz, Andreas Kontaxis, Andrew P Kraszewski, Mandi W Gibbons, Sherry I Backus, Philip W Fink, Stephen Fealy, Howard J Hillstrom
BACKGROUND: Few studies have investigated detailed 3-dimensional lower extremity kinematics during baseball pitching in adolescent athletes during extended play. Changes in these parameters may affect performance outcomes. PURPOSE: To investigate whether adolescent baseball pitchers experience changes in lower extremity kinematics and event timing during a simulated game-length pitching bout. STUDY DESIGN: Descriptive laboratory study. METHODS: Twelve male adolescent pitchers (aged 14-16 years) threw 6 sets of 15 fastball pitches from an artificial pitching mound to a target at regulation distance...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28151782/lessons-from-the-2016-world-series-moneyball-and-medicine-baseball-and-health-care-leadership-teams-achieve-the-triple-aim
#5
Kathleen Ahern Gould
No abstract text is available yet for this article.
March 2017: Dimensions of Critical Care Nursing: DCCN
https://www.readbyqxmd.com/read/28150571/sanguibacter-gelidistatuariae-sp-nov-a-novel-psychrotolerant-anaerobe-from-an-ice-sculpture-in-antarctica-and-emendation-of-descriptions-for-the-family-sanguibacteraceae-the-genus-sanguibacter-and-species-s-antarcticus-s-inulinus-s-kedieii-s-marinus-s-soli
#6
Elena V Pikuta, Zhe Lyu, Melissa D Williams, Nisha B Patel, Yuchen Liu, Richard Brice Hoover, Hans-Jürgen Busse, Paul A Lawson, William B Whitman
A novel psychrotolerant bacterium strain ISLP-3T was isolated from a sample of naturally formed ice sculpture on the shore of Lake Podprudnoye in Antarctica. Cells were motile, stained Gram positive, non-spore-forming, straight or slightly curved rods with the shape of a baseball bat. The new isolate was facultatively anaerobic and catalase positive. Growth occurred at 3-35 ºC with an optimum at 24 °C, 0-2 % w/v NaCl with an optimum at 0.3 % and pH 6.2 - 9.5 with an optimum 7.5. Strain ISLP-3T grew on several carbon sources, with the best growth on D-cellobiose...
February 1, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28146405/the-youth-throwing-score
#7
Christopher S Ahmad, Ajay S Padaki, Manish S Noticewala, Eric C Makhni, Charles A Popkin
BACKGROUND: Epidemic levels of shoulder and elbow injuries have been reported recently in youth and adolescent baseball players. Despite the concerning frequency of these injuries, no instrument has been validated to assess upper extremity injury in this patient population. Purpose/Hypothesis: The purpose of this study was to validate an upper extremity assessment tool specifically designed for young baseball players. We hypothesized that this tool will be both reliable and valid. STUDY DESIGN: Cohort study (diagnosis); Level of evidence, 2...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28141717/behavioral-changes-associated-with-a-disruptive-new-student-in-the-classroom
#8
Julie Stein OʼBrien, Howard Taras, Scott Barton, Pete Sellick, Martin T Stein
Marcus is a 10-year-old boy who was followed by his pediatrician for several years. She knows him as a socially engaged, active athlete, playing soccer and baseball, out-going, and a good student. He has been in good health without a significant medical history.At the beginning of this academic year, a new student was placed in Marcus's fourth grade class. This student is disruptive, impulsive, and abusive. He has frequent violent outbursts, yelling, kicking, and throwing objects, including recently throwing a desk across the room...
February 2017: Journal of Developmental and Behavioral Pediatrics: JDBP
https://www.readbyqxmd.com/read/28137446/hamate-hook-stress-fracture-in-a-professional-bowler-case-report-of-an-unusual-causal-sport
#9
N How Kit, M Malherbe, C Hulet
Stress fracture of the hook of the hamate is uncommon and is usually seen in sports involving a club, racquet or bat (i.e., golf, tennis or baseball). It is caused by direct blunt trauma. We report an unusual case of stress fracture with non-union in a 23-year-old professional bowler, probably caused by endogenous constraints, 1 year after the start of symptoms. Treatment consisted of surgical resection of the hook of the hamate. Multimodal imaging of this fracture is reviewed.
February 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28131683/differences-in-humeral-retroversion-in-dominant-and-nondominant-sides-of-young-baseball-players
#10
Daisuke Kurokawa, Nobuyuki Yamamoto, Hiroaki Ishikawa, Hideaki Nagamoto, Hiroyuki Takahashi, Takayuki Muraki, Minoru Tanaka, Katsumi Sato, Eiji Itoi
BACKGROUND: The relationship between the disabled throwing shoulder and humeral retroversion has recently attracted a great deal of attention. However, none of the previous studies clarified when the side-to-side difference of humeral retroversion in young baseball players would start. This study aimed to clarify when the difference of humeral retroversion in the dominant and nondominant sides appeared in baseball players. METHODS: The bicipital-forearm angle in bilateral shoulders of 172 elementary school baseball players was measured by ultrasound...
January 25, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28128007/prevalence-and-proposed-mechanisms-of-chronic-low-back-pain-in-baseball-part-i
#11
Joseph G Wasser, Jason L Zaremski, Daniel C Herman, Heather K Vincent
The prevalence of low back pain (LBP) among active baseball players ranges between 3 and 15%. The execution of baseball-specific manoeuvres, such as pitching or batting, may be related to the onset of LBP. These baseball motions are complex and require appropriate activation of the core musculature to produce a well-timed motion with forces minimized at the extremities. The spine, core and back musculature are involved with acceleration and deceleration of rotational motions. This narrative review synopsizes the available evidence of the prevalence of and mechanical factors underlying LBP in the baseball population...
January 27, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28128000/assessment-and-rehabilitation-of-chronic-low-back-pain-in-baseball-part-ii
#12
Joseph G Wasser, Jason L Zaremski, Daniel C Herman, Heather K Vincent
Repetitive throwing and hitting motions in baseball place mechanical stresses to the lumbar spine which may cause low back pain (LBP). Pain may be due to vertebral stress reactions or insufficiency fractures, intervertebral disc degeneration or intervertebral disc herniation. Untreated chronic conditions have high potential to lead to a more significant injury such as spondylolysis. Chronic LBP increases the risk for missed playing time, early career termination and lower quality of life after retirement. Proper clinical assessment and prevention/rehabilitation of LBP in this population is thus important for performance, play time and overall long-term quality of life...
January 27, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28125914/sports-injuries-to-the-latissimus-dorsi-and-teres-major
#13
Benjamin F Donohue, Marc G Lubitz, Timothy E Kremchek
Injuries to the latissimus dorsi and teres major muscles, while rare, are debilitating. They are seen in a variety of sports, although disproportionately in the throwing shoulder of baseball pitchers. There have been 25 case reports and 2 case series published on the nonoperative and operative management of these injuries. Latissimus dorsi and teres major muscle anatomy, function, and common injury patterns are well described in these case reports. Also well detailed are the typical patient presentation, physical examination, and imaging findings...
December 1, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28115724/how-jet-lag-impairs-major-league-baseball-performance
#14
Alex Song, Thomas Severini, Ravi Allada
Laboratory studies have demonstrated that circadian clocks align physiology and behavior to 24-h environmental cycles. Examination of athletic performance has been used to discern the functions of these clocks in humans outside of controlled settings. Here, we examined the effects of jet lag, that is, travel that shifts the alignment of 24-h environmental cycles relative to the endogenous circadian clock, on specific performance metrics in Major League Baseball. Accounting for potential differences in home and away performance, travel direction, and team confounding variables, we observed that jet-lag effects were largely evident after eastward travel with very limited effects after westward travel, consistent with the >24-h period length of the human circadian clock...
February 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28113146/statcast-dashboard-exploration-of-spatiotemporal-baseball-data
#15
Marcos Lage, Jorge Piazentin Ono, Daniel Cervone, Justin Chiang, Carlos Dietrich, Claudio T Silva
Major League Baseball (MLB) has a long history of providing detailed, high-quality data, leading to a tremendous surge in sports analytics research in recent years. In 2015, MLB.com released the StatCast spatiotemporal data-tracking system, which has been used in approximately 2,500 games since its inception to capture player and ball locations as well as semantically meaningful game events. This article presents a visualization and analytics infrastructure to help query and facilitate the analysis of this new tracking data...
September 2016: IEEE Computer Graphics and Applications
https://www.readbyqxmd.com/read/28112783/quadrilateral-space-syndrome-with-involvement-of-the-tendon-of-the-latissimus-dorsi
#16
Ryuji Koga, Kozo Furushima, Hiroshi Kusano, Junichiro Hamada, Yoshiyasu Itoh
Quadrilateral space syndrome (QSS) is the term used to describe axillary nerve palsy due to compression of the axillary nerve and posterior circumflex artery in the quadrilateral space. The precise pathophysiology of QSS is still unclear; hence, a consensus of diagnosis and treatment for QSS has not yet been achieved. The authors present the case of a 17-year-old male baseball player with symptoms of QSS, including right elbow and shoulder joint pain and upper limb numbness while throwing. The symptoms had worsened during baseball...
January 20, 2017: Orthopedics
https://www.readbyqxmd.com/read/28104091/major-league-pitching-workload-after-primary-ulnar-collateral-ligament-reconstruction-and-risk-for-revision-surgery
#17
Robert A Keller, Nima Mehran, Nathan E Marshall, Kelechi R Okoroha, Lafi Khalil, James E Tibone, Vasilios Moutzouros
BACKGROUND: Literature has attempted to correlate pitching workload with risk of ulnar collateral ligament (UCL) injury; however, limited data are available in evaluating workload and its relationship with the need for revision reconstruction in Major League Baseball (MLB) pitchers. METHODS: We identified 29 MLB pitchers who underwent primary UCL reconstruction surgery and subsequently required revision reconstruction and compared them with 121 MLB pitchers who underwent primary reconstruction but did not later require revision surgery...
February 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28102105/pitching-form-determines-probabilistic-structure-of-errors-in-pitch-location
#18
Masahiro Shinya, Shinji Tsuchiya, Yousuke Yamada, Kimitaka Nakazawa, Kazutoshi Kudo, Shingo Oda
According to recent motor control studies, it is important to know probabilistic structure of his/her own motor errors to choose an optimal motor plan (i.e., where you aim at) to maximise the expected gain. In this study, we questioned if pitching form determines the probabilistic structure of pitching errors in baseball pitchers. Eighteen collegiate baseball pitchers with various pitching forms including right- and left-handed overarm, sidearm and underarm throwers threw 100 pitches aiming at a target located 90 cm above the ground...
January 19, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28098055/nonsurgical-treatment-of-mason-type-ii-radial-head-fractures-in-athletes-a-retrospective-study
#19
M Guzzini, A Vadalà, A Agrò, V Di Sanzo, D Pironi, A Redler, P Serlorenzi, L Proietti, C Civitenga, D Mazza, R M Lanzetti, Andrea Ferretti
OBJECTIVE: The best treatment for moderately displaced radial head fractures (Mason type II) still remains controversial. In cases of isolated fractures, there is no evidence that a fragment displacement of ≥ 2 mm gives poor results in conservatively treated fractures. PATIENTS AND METHODS: We retrospectively reviewed 52 patients (31M, 21F) affected by an isolated Mason type II fracture, treated with a long arm cast for two weeks between 2008 and 2013. All patients had practiced sports before being injured...
September 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/28096246/chronic-traumatic-encephalopathy-is-latency-in-symptom-onset-explained-by-tau-propagation
#20
Joshua Kriegel, Zachary Papadopoulos, Ann C McKee
Chronic traumatic encephalopathy (CTE) is a neurodegenerative tauopathy associated with repetitive mild brain trauma. CTE, previously termed "dementia pugilistica," has been identified in American football, ice hockey, baseball, rugby and soccer players, boxers, wrestlers, and military personnel exposed to blast and other traumatic brain injuries. There is often a long latency period between an individual's exposure to repetitive brain trauma and the clinical symptoms of CTE. The pathology of CTE is characterized by a progression from isolated focal perivascular hyperphosphorylated tau lesions in the cerebral cortex to a widespread tauopathy that involves diffuse cortical and medial temporal lobe regions...
January 17, 2017: Cold Spring Harbor Perspectives in Medicine
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