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  1 / 1996 MEDLINE  
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[PMID]:28282749
[Au] Autor:Klemish D; Ramger B; Vittetoe K; Reiter JP; Tokdar ST; Appelbaum LG
[Ad] Endereço:a Department of Statistical Science , Duke University , Durham , NC , USA.
[Ti] Título:Visual abilities distinguish pitchers from hitters in professional baseball.
[So] Source:J Sports Sci;36(2):171-179, 2018 Jan.
[Is] ISSN:1466-447X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study aimed to evaluate the possibility that differences in sensorimotor abilities exist between hitters and pitchers in a large cohort of baseball players of varying levels of experience. Secondary data analysis was performed on 9 sensorimotor tasks comprising the Nike Sensory Station assessment battery. Bayesian hierarchical regression modelling was applied to test for differences between pitchers and hitters in data from 566 baseball players (112 high school, 85 college, 369 professional) collected at 20 testing centres. Explanatory variables including height, handedness, eye dominance, concussion history, and player position were modelled along with age curves using basis regression splines. Regression analyses revealed better performance for hitters relative to pitchers at the professional level in the visual clarity and depth perception tasks, but these differences did not exist at the high school or college levels. No significant differences were observed in the other 7 measures of sensorimotor capabilities included in the test battery, and no systematic biases were found between the testing centres. These findings, indicating that professional-level hitters have better visual acuity and depth perception than professional-level pitchers, affirm the notion that highly experienced athletes have differing perceptual skills. Findings are discussed in relation to deliberate practice theory.
[Mh] Termos MeSH primário: Desempenho Atlético/fisiologia
Beisebol/fisiologia
Percepção de Profundidade/fisiologia
Acuidade Visual/fisiologia
[Mh] Termos MeSH secundário: Adolescente
Adulto
Fatores Etários
Teorema de Bayes
Seres Humanos
Masculino
Destreza Motora/fisiologia
Córtex Sensório-Motor/fisiologia
Análise e Desempenho de Tarefas
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180226
[Lr] Data última revisão:
180226
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170312
[St] Status:MEDLINE
[do] DOI:10.1080/02640414.2017.1288296


  2 / 1996 MEDLINE  
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[PMID]:29252753
[Au] Autor:Grau LC; Jose J; Sama AJ; Baraga MG
[Ad] Endereço:Department of Orthopaedics, University of Miami Miller School of Medicine, Miami, Florida.
[Ti] Título:Osteochondritis Dissecans of the Glenoid in a Major League Baseball Prospect: A Case Report.
[So] Source:JBJS Case Connect;6(4):e100, 2016 Oct-Dec.
[Is] ISSN:2160-3251
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:CASE: A 16-year-old Major League Baseball prospect presented with persistent shoulder pain associated with throwing. Magnetic resonance imaging (MRI) demonstrated a large osteochondritis dissecans lesion in the posterosuperior aspect of the glenoid. The patient was restricted from throwing and underwent therapy to improve range of motion and throwing mechanics. Eight months after initiating nonoperative treatment, an MRI arthrogram demonstrated a healed lesion. At follow-up 2 years after treatment, full relief of symptoms had persisted. CONCLUSION: Osteochondritis dissecans lesions of the glenoid are extremely rare, but have the potential to heal in overhead-throwing athletes. To our knowledge, this is the only case reported in the literature that demonstrates a healed osteochondritis dissecans lesion of the glenoid following nonoperative treatment.
[Mh] Termos MeSH primário: Cavidade Glenoide/diagnóstico por imagem
Osteocondrite Dissecante/diagnóstico por imagem
Lesões do Ombro/diagnóstico por imagem
[Mh] Termos MeSH secundário: Adolescente
Beisebol/fisiologia
Seres Humanos
Masculino
Osteocondrite Dissecante/reabilitação
Lesões do Ombro/reabilitação
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180216
[Lr] Data última revisão:
180216
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE
[do] DOI:10.2106/JBJS.CC.16.00067


  3 / 1996 MEDLINE  
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[PMID]:29201309
[Au] Autor:Hosokawa Y; Mihata T; Itami Y; Neo M; Doi M
[Ad] Endereço:Doi Orthopaedic Clinic, Takatsuki, Japan.
[Ti] Título:Little Leaguer's Shoulder Can Cause Severe Three-Dimensional Humeral Deformity.
[So] Source:Clin Orthop Surg;9(4):537-541, 2017 Dec.
[Is] ISSN:2005-4408
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:We analyzed three-dimensional (3D) humeral deformity (valgus-varus, flexion-extension, and rotational deformation) after little leaguer's shoulder using 3D computed tomography in a 15-year-old male baseball player. Humeral retroversion was increased by 27.1° on the dominant side compared with the nondominant side. Compared with the nondominant shaft, the dominant humeral shaft was deformed in the varus direction (9.4°), resulting in a decreased neck-shaft angle (dominant side, 127.5°; nondominant side, 135.1°), and it was also deformed in the extension direction (21.0°). This case demonstrates that little leaguer's shoulder can cause markedly greater humeral retroversion than has been reported previously and can result in varus and extension deformation of the humerus. These findings suggest that humeral deformity in overhead throwing athletes may not always solely reflect adaptation to throwing.
[Mh] Termos MeSH primário: Beisebol/lesões
Úmero/diagnóstico por imagem
Úmero/patologia
Fraturas Salter-Harris/complicações
[Mh] Termos MeSH secundário: Adolescente
Seres Humanos
Úmero/lesões
Imagem Tridimensional
Masculino
Tomografia Computadorizada por Raios X
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180207
[Lr] Data última revisão:
180207
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171205
[St] Status:MEDLINE
[do] DOI:10.4055/cios.2017.9.4.537


  4 / 1996 MEDLINE  
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[PMID]:29069559
[Au] Autor:Mann DL; Loffing F; Allen PM
[Ad] Endereço:Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
[Ti] Título:The Success of Sinister Right-Handers in Baseball.
[So] Source:N Engl J Med;377(17):1688-1690, 2017 10 26.
[Is] ISSN:1533-4406
[Cp] País de publicação:United States
[La] Idioma:eng
[Mh] Termos MeSH primário: Beisebol/estatística & dados numéricos
Lateralidade Funcional
[Mh] Termos MeSH secundário: Beisebol/fisiologia
Seres Humanos
Masculino
Destreza Motora
Razão de Chances
[Pt] Tipo de publicação:LETTER
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171109
[Lr] Data última revisão:
171109
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:171026
[St] Status:MEDLINE
[do] DOI:10.1056/NEJMc1711659


  5 / 1996 MEDLINE  
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[PMID]:28767546
[Au] Autor:Fogt N; Persson TW
[Ad] Endereço:The Ohio State University College of Optometry, Columbus, Ohio (both authors).
[Ti] Título:A Pilot Study of Horizontal Head and Eye Rotations in Baseball Batting.
[So] Source:Optom Vis Sci;94(8):789-796, 2017 Aug.
[Is] ISSN:1538-9235
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PURPOSE: The purpose of the study was to measure and compare horizontal head and eye tracking movements as baseball batters "took" pitches and swung at baseball pitches. METHODS: Two former college baseball players were tested in two conditions. A pitching machine was used to project tennis balls toward the subjects. In the first condition, subjects acted as if they were taking (i.e., not swinging) the pitches. In the second condition, subjects attempted to bat the pitched balls. Head movements were measured with an inertial sensor; eye movements were measured with a video eye tracker. RESULTS: For each condition, the relationship between the horizontal head and eye rotations was similar for the two subjects, as were the overall head-, eye-, and gaze-tracking strategies. In the "take" condition, head movements in the direction of the ball were larger than eye movements for much of the pitch trajectory. Large eye movements occurred only late in the pitch trajectory. Gaze was directed near the ball until approximately 150 milliseconds before the ball arrived at the batter, at which time gaze was directed ahead of the ball to a location near that occupied when the ball crosses the plate. In the "swing" condition, head movements in the direction of the ball were larger than eye movements throughout the pitch trajectory. Gaze was directed near the ball until approximately 50 to 60 milliseconds prior to pitch arrival at the batter. DISCUSSION: Horizontal head rotations were larger than horizontal eye rotations in both the "take" and "swing" conditions. Gaze was directed ahead of the ball late in the pitch trajectory in the "take" condition, whereas gaze was directed near the ball throughout much of the pitch trajectory in the "swing" condition.
[Mh] Termos MeSH primário: Beisebol/fisiologia
Movimentos Oculares/fisiologia
Movimentos da Cabeça/fisiologia
[Mh] Termos MeSH secundário: Adulto
Seres Humanos
Masculino
Projetos Piloto
Desempenho Psicomotor/fisiologia
Rotação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:171013
[Lr] Data última revisão:
171013
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE
[do] DOI:10.1097/OPX.0000000000001100


  6 / 1996 MEDLINE  
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[PMID]:28766408
[Au] Autor:Kawamura K; Shinya M; Kobayashi H; Obata H; Kuwata M; Nakazawa K
[Ad] Endereço:a Department of Life Sciences , Graduate School of Arts and Sciences, The University of Tokyo , Tokyo , Japan.
[Ti] Título:Baseball pitching accuracy: an examination of various parameters when evaluating pitch locations.
[So] Source:Sports Biomech;16(3):399-410, 2017 Sep.
[Is] ISSN:1476-3141
[Cp] País de publicação:Scotland
[La] Idioma:eng
[Ab] Resumo:This study evaluated baseball pitching accuracy using a variety of parameters to quantify pitching errors and analysed the validity of the accuracy measurements by comparing the outcomes of two small groups of pitchers. Several professional (n = 5) and high school (n = 8) pitchers threw 30 pitches each, including 20 fastballs and 10 breaking balls. To assess pitching accuracy, pitch locations relative to the catcher's mitt (as the target) were evaluated with various parameters, including major/minor radius, an area of 95% confidence ellipse, absolute error, constant error and pitch location trajectory. Compared to the high school pitchers, the professional pitchers exhibited shorter major and minor radii in their 20 fastball pitches (p < 0.05), more accurate control in the lateral direction (p < 0.05), and shorter pitch location trajectories (p < 0.05). The evaluation methods presented in this study can objectively assess pitching accuracy and may thus provide useful coaching feedback with visual information.
[Mh] Termos MeSH primário: Desempenho Atlético/fisiologia
Beisebol/fisiologia
Destreza Motora/fisiologia
[Mh] Termos MeSH secundário: Adolescente
Adulto
Fenômenos Biomecânicos
Feedback Formativo
Seres Humanos
Masculino
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170803
[St] Status:MEDLINE
[do] DOI:10.1080/14763141.2017.1332236


  7 / 1996 MEDLINE  
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[PMID]:28701678
[Au] Autor:Yagi S; Mitsugi M; Sangawa T; Akaike M; Sata M
[Ad] Endereço:Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences.
[Ti] Título:Paget-Schroetter Syndrome in a Baseball Pitcher.
[So] Source:Int Heart J;58(4):637-640, 2017 Aug 03.
[Is] ISSN:1349-3299
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:Paget-Schroetter syndrome (PSS) is thrombosis of the deep veins draining the upper extremity due to anatomic abnormalities of the thoracic outlet that cause subclavian compression and subsequent thrombosis, leading to thrombus formation in the subclavian vein. Vigorous arm activity in sports is a known risk factor. Here, we report a case of Paget-Schroetter syndrome in a 31-year-old male non-professional baseball pitcher.
[Mh] Termos MeSH primário: Beisebol
Fibrinolíticos/uso terapêutico
Terapia Trombolítica/métodos
Trombose Venosa Profunda de Membros Superiores/diagnóstico
[Mh] Termos MeSH secundário: Adulto
Seres Humanos
Masculino
Tomografia Computadorizada por Raios X
Trombose Venosa Profunda de Membros Superiores/tratamento farmacológico
[Pt] Tipo de publicação:CASE REPORTS; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fibrinolytic Agents)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170810
[Lr] Data última revisão:
170810
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170714
[St] Status:MEDLINE
[do] DOI:10.1536/ihj.16-447


  8 / 1996 MEDLINE  
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[PMID]:28646506
[Au] Autor:Dertinger SD
[Ad] Endereço:Litron Laboratories, Rochester, New York.
[Ti] Título:Three lessons for genetic toxicology from baseball analytics.
[So] Source:Environ Mol Mutagen;58(6):390-397, 2017 Jul.
[Is] ISSN:1098-2280
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In many respects the evolution of baseball statistics mirrors advances made in the field of genetic toxicology. From its inception, baseball and statistics have been inextricably linked. Generations of players and fans have used a number of relatively simple measurements to describe team and individual player's current performance, as well as for historical record-keeping purposes. Over the years, baseball analytics has progressed in several important ways. Early advances were based on deriving more meaningful metrics from simpler forerunners. Now, technological innovations are delivering much deeper insights. Videography, radar, and other advances that include automatic player recognition capabilities provide the means to measure more complex and useful factors. Fielders' reaction times, efficiency of the route taken to reach a batted ball, and pitch-framing effectiveness come to mind. With the current availability of complex measurements from multiple data streams, multifactorial analyses occurring via machine learning algorithms have become necessary to make sense of the terabytes of data that are now being captured in every Major League Baseball game. Collectively, these advances have transformed baseball statistics from being largely descriptive in nature to serving data-driven, predictive roles. Whereas genetic toxicology has charted a somewhat parallel course, a case can be made that greater utilization of baseball's mindset and strategies would serve our scientific field well. This paper describes three useful lessons for genetic toxicology, courtesy of the field of baseball analytics: seek objective knowledge; incorporate multiple data streams; and embrace machine learning. Environ. Mol. Mutagen. 58:390-397, 2017. © 2017 Wiley Periodicals, Inc.
[Mh] Termos MeSH primário: Beisebol
Estatística como Assunto
Toxicogenética
[Mh] Termos MeSH secundário: Beisebol/história
História do Século XIX
História do Século XX
História do Século XXI
Conhecimento
Aprendizado de Máquina
[Pt] Tipo de publicação:EDITORIAL; HISTORICAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170808
[Lr] Data última revisão:
170808
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170625
[St] Status:MEDLINE
[do] DOI:10.1002/em.22105


  9 / 1996 MEDLINE  
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[PMID]:28632063
[Au] Autor:Ae K; Koike S; Fujii N; Ae M; Kawamura T
[Ad] Endereço:a Sports Research & Development Core , University of Tsukuba , Tsukuba , Japan.
[Ti] Título:Kinetic analysis of the lower limbs in baseball tee batting.
[So] Source:Sports Biomech;16(3):283-296, 2017 Sep.
[Is] ISSN:1476-3141
[Cp] País de publicação:Scotland
[La] Idioma:eng
[Ab] Resumo:The purpose of this study was to investigate effects of the ground reaction forces on the rotation of the body as a whole and on the joint torques of the lower limbs associated with trunk and pelvic rotation in baseball tee batting. A total of 22 male collegiate baseball players participated in this study. Three-dimensional coordinate data were acquired by a motion capture system (250 Hz), and ground reaction forces of both legs were measured with three force platforms (1,000 Hz). Kinetic data were used to calculate the moment about the vertical axis through the body's centre of mass resulting from ground reaction forces, as well as to calculate the torque and mechanical work in the lower limb joints. The lateral/medial ground reaction force generated by both legs resulted in the large whole body moment about its vertical axis. The joint torques of flexion/extension of both hips, adduction of the stride hip and extension of the stride knee produced significantly larger mechanical work than did the other joint torques. To obtain high bat-head speed, the batter should push both legs in the lateral/medial direction by utilising both hips and stride knee torques so as to increase the whole body rotation.
[Mh] Termos MeSH primário: Beisebol/fisiologia
Extremidade Inferior/fisiologia
[Mh] Termos MeSH secundário: Tornozelo/fisiologia
Fenômenos Biomecânicos
Quadril/fisiologia
Seres Humanos
Joelho/fisiologia
Masculino
Pelve/fisiologia
Rotação
Estudos de Tempo e Movimento
Tronco/fisiologia
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE
[do] DOI:10.1080/14763141.2017.1284257


  10 / 1996 MEDLINE  
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[PMID]:28632045
[Au] Autor:Miyanishi T; Endo S; Nagahara R
[Ad] Endereço:a Faculty of Sports Science , Sendai University , Shibata , Japan.
[Ti] Título:Comparison of crossover and jab step start techniques for base stealing in baseball.
[So] Source:Sports Biomech;16(4):552-566, 2017 Nov.
[Is] ISSN:1476-3141
[Cp] País de publicação:Scotland
[La] Idioma:eng
[Ab] Resumo:Base stealing is an important tactic for increasing the chance of scoring in baseball. This study aimed to compare the crossover step (CS) and jab step (JS) starts for base stealing start performance and to clarify the differences between CS and JS starts in terms of three-dimensional lower extremity joint kinetics. Twelve male baseball players performed CS and JS starts, during which their motion and the force they applied to the ground were simultaneously recorded using a motion-capture system and two force platforms. The results showed that the normalised average forward external power, the average forward-backward force exerted by the left leg, and the forward velocities of the whole body centre of gravity generated by both legs and the left leg were significantly higher for the JS start than for the CS start. Moreover, the positive work done by hip extension during the left leg push-off was two-times greater for the JS start than the CS start. In conclusion, this study has demonstrated that the jab step start may be the better technique for a base stealing start and that greater positive work produced by left hip extension is probably responsible for producing its larger forward ground reaction force.
[Mh] Termos MeSH primário: Desempenho Atlético/fisiologia
Beisebol/fisiologia
Extremidade Inferior/fisiologia
Destreza Motora/fisiologia
[Mh] Termos MeSH secundário: Fenômenos Biomecânicos
Seres Humanos
Masculino
Estudos de Tempo e Movimento
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170918
[Lr] Data última revisão:
170918
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170621
[St] Status:MEDLINE
[do] DOI:10.1080/14763141.2016.1246604



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