Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"pitchers"”.
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Retrospective Practice Histories of Expert and Novice Baseball Pitchers
… practice histories of expert and novice baseball pitchers. Eleven minor league pitchers (experts) and ten players who pitched in high school, but did not pitch in college (novices) served as participants. All participants were interviewed to elicit information regarding their baseball practice …
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Failure Analysis of the Ulnar Collateral Ligament for Youth Baseball Pitchers
… of eighteen 10- to 11- year-old baseball pitchers throwing 10 fastballs were analyzed. Maximum internal elbow varus torques were calculated using inverse dynamics methods during a typical pitch cycle. Calculations used axial loading stress equations and maximum internal elbow varus torques …
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Investigating if MLB pitchers are self-selecting for high or low drag balls
… MLB in 2019 were measured and matched with 121 pitchers who threw the ball to examine if they are statistically more or less likely to select a high or low drag ball to throw. It was hypothesized that (1) pitchers are routinely selecting for either high or low drag balls, and (2) the regular …
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Ankle Mobility and Lower Extremity Functional Stability Assessment and Intervention for Collegiate Baseball Pitchers
Collegiate baseball pitchers experience a high incidence of upper extremity injuries, often associated with impaired force transfer through the kinetic chain. Limited ankle dorsiflexion may alter stride length and increase injury risk. Purpose: This study aimed to establish a screening tool to …
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APPLYING MATCHING EQUATION TO PITCH SELECTION IN MAJOR LEAGUE BASEBALL
… to evaluate the pitch selection of 21 groups of pitchers as well as 144 individual pitchers. The GME described pitch selection well for four of the 21 pitching groups and 32 of the 144 individual pitchers. Of the remaining groups and individual pitchers, behavior may be explained by rule …
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The Effect Of Pitching With Underweight And Overweight Balls On Pitch Velocity In Collegiate Baseball Pitchers.
… to improve overhand throw velocity in baseball pitchers, weighted implement training, which utilizes balls that are heavier or lighter than a competition ball, have been employed. Weighted ball programs have previously been used in baseball pitchers ranging from high school to professional with …
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Effects of Video and Cognitive Imagery on Throwing Performance of Baseball Pitchers: A Single Subject Design
… accuracy performance of individual baseball pitchers. A secondary purpose of this study was to investigate if differences in accuracy response existed in low verses high ability imagers. A sample of pitchers (n=30) were asked to take the Movement Imagery Questionnaire- Revised and …
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EXAMINING THE RELATIONSHIPS BETWEEN SHOULDER AND ELBOW SOFT-TISSUE PROPERTIES, THROWING MECHANICS, AND RANGE OF MOTION IN ADULT BASEBALL PITCHERS
… structures of the shoulder and elbow, causing pitchers to be injured at an alarming rate. Most researchers believe soft-tissue injuries in pitchers are acute manifestations of chronic microtrauma as a result of repetitive near-maximal loading. While specific mechanical factors and range of …
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Youth Pitching Kinematics: Associations with Body Overweight Parameters
… and overweight measures for youth baseball pitchers. The injury-related kinematic parameters considered were measurements 1) at foot contact: stride length, front foot position, shoulder external rotation, shoulder abduction, and elbow flexion; 2) between FC and ball release: peak knee …
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Analysis of pitching and active joint range of motion in baseball pitchers with markerless motion capture software
Baseball pitching is a highly scrutinized and studied movement, with pitch velocity being an important contributor to future success of an athlete. Pitching biomechanics can reveal important insights about a pitcher’s performance, with markerless, camera-based systems providing new-found …
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Relative contribution of the internal rotators of the shoulder to speed of the fastball in college baseball pitchers
… in the fastball pitch as exhibited by college pitchers. An objective of the study was to explain at least 40% of the contribution of ball speed. The literature appears to be somewhat inconclusive as to the quantification of component contributors of muscle groups m the upper extremity to ball …
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Short Term Economic Costs and Head Trauma: Examples from Major League Baseball
… individuals struck in the head with an object. Pitchers at the major league level of baseball whom have been struck in the head with a batted baseball are used as a generalized analog for society due to the available statistics produced by on field performance. This study hypothesizes that …
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A Kinematic Comparison Of Shoulder And Elbow Dynamics Influenced By The Shoe-Surface Interface In Youth And Adolescent Baseball Pitchers
… contributors to upper extremity pain in baseball pitchers, footwear has not been considered a potential factor. Therefore, the purpose of this study was to determine how baseball-specific footwear [turf shoes (ts) and molded cleats (mc)] affects the shoulder and elbow dynamics of youth and …
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Ecological Interactions Between Spiders and the Purple Pitcher Plant, <i>Sarracenia purpurea</i>
… species of spiders that commonly oviposit in the pitchers were recorded. Finally, stable isotope signatures were used to determine if spider residents contribute nutrients to the plant. Significant correlations were found between the density and diversity of spiders captured by <em>S. …
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Phenology of a Relict Population Of The Pitcher Plant Mosquito, Wyeomyia Smithii (Diptera: Culicidae), in Tattnall Co., Ga
… smithii</em> Coquillett lives only within the pitchers of the purple pitcher plant, <em>Sarracenia purpurea</em> L. An isolated population of <em>Wy. smithii</em> occurs in Tattnall Co., GA isolated from other populations by over 300 km in all directions. In order to monitor the stability, …
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A comparison of height, weight, and percent body fat of college baseball athletes at the pitcher, catcher, infield, and outfield positions
… the height, weight, and percent body fat of pitchers, catchers, infielders, and outfielders among college baseball athletes. The subjects participating in this investigation were baseball players ranging from 18-23 years of age and who were members of seven intercollegiate varsity teams …
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A Framework for Analysis of Softball Pitching, as Applied to Legal and Illegal Pitches
… to the NCAA’s 2023 rule change allowing softball pitchers to legally disengage from the playing surface while delivering a pitch, this study develops a framework to analyze and compare the legal drag, legal leap, and illegal replant pitching techniques. By developing a pose estimation algorithm …
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