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The Impact of Sport Specialization in Baseball on Scapular Kinematics and Kinetics.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The Impact of Sport Specialization in Baseball on Scapular Kinematics and Kinetics./
作者:	Kinney, Taylor J.
面頁冊數:	1 online resource (85 pages)
附註:	Source: Masters Abstracts International, Volume: 83-12.
Contained By:	Masters Abstracts International83-12.
標題:	Biomechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29162951click for full text (PQDT)
ISBN:	9798819399668

The Impact of Sport Specialization in Baseball on Scapular Kinematics and Kinetics.
Kinney, Taylor J.

The Impact of Sport Specialization in Baseball on Scapular Kinematics and Kinetics. - 1 online resource (85 pages)

Source: Masters Abstracts International, Volume: 83-12.

Thesis (M.S.)--University of Nebraska at Omaha, 2022.

Includes bibliographical references

Increased participation in youth baseball has led to researchers identifying the issue of sport specialization. Rates of sport specialization in baseball players continue to rise, despite ample evidence linking sport specialization and overuse injury. Baseball pitchers may be particularly susceptible to overuse injuries due to the repetitive nature of the task of pitching. Overwhelming biomechanical data have related shoulder injury in pitchers to improper pitching mechanics. Traditional biomechanical pitching assessment does not analyze specific joint contributions to global shoulder biomechanics. A novel individualized linear model specifically validated to assess scapular mechanics during pitching can estimate scapulothoracic orientation based on measurable humerothoracic orientation. The primary purpose of this project was to assess the impact of early sport specialization on the scapular biomechanics of collegiate baseball pitchers. Individualized linear models were created for 25 collegiate baseball players through estimation of scapulothoracic orientation based on humerothoracic orientation during static arm positions identified during each participant's throwing motion. Early specialized pitchers (58.02° ± 22.61°) displayed significantly greater values of scapular upward rotation at max external rotation (t = -1.960, p = 0.035) compared to late specialized pitchers (41.81° ± 10.43°). Early specialized pitchers produced significantly greater peak shoulder internal rotation moment (t = -1.83, p = 0.040) compared to late specialized pitchers. A strong, positive, statistically significant correlation (r(14) = 0.64, p < 0.01) was found between humerothoracic horizontal abduction and scapulothoracic internal rotation at ball release in all pitchers, regardless of specialization status. The statistically significant correlation expands upon previous research suggesting the scapular spine functions to align with the humerus during pitching. Two results supported our hypothesis that early specialization in baseball will be related to greater biomechanical variables during pitching, however, none of the results supported the hypotheses regarding injury history's impact on pitching biomechanics. Additional research should be completed evaluating the impact of sport specialization on sport biomechanics through greater subject recruitment, as well as recruiting a younger range of pitchers who are at the crossroads of specialization.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2023

Mode of access: World Wide Web

ISBN: 9798819399668Subjects--Topical Terms:

548685
Biomechanics.
Subjects--Index Terms:

Sport specializationIndex Terms--Genre/Form:

542853
Electronic books.

The Impact of Sport Specialization in Baseball on Scapular Kinematics and Kinetics.
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520 $a Increased participation in youth baseball has led to researchers identifying the issue of sport specialization. Rates of sport specialization in baseball players continue to rise, despite ample evidence linking sport specialization and overuse injury. Baseball pitchers may be particularly susceptible to overuse injuries due to the repetitive nature of the task of pitching. Overwhelming biomechanical data have related shoulder injury in pitchers to improper pitching mechanics. Traditional biomechanical pitching assessment does not analyze specific joint contributions to global shoulder biomechanics. A novel individualized linear model specifically validated to assess scapular mechanics during pitching can estimate scapulothoracic orientation based on measurable humerothoracic orientation. The primary purpose of this project was to assess the impact of early sport specialization on the scapular biomechanics of collegiate baseball pitchers. Individualized linear models were created for 25 collegiate baseball players through estimation of scapulothoracic orientation based on humerothoracic orientation during static arm positions identified during each participant's throwing motion. Early specialized pitchers (58.02° ± 22.61°) displayed significantly greater values of scapular upward rotation at max external rotation (t = -1.960, p = 0.035) compared to late specialized pitchers (41.81° ± 10.43°). Early specialized pitchers produced significantly greater peak shoulder internal rotation moment (t = -1.83, p = 0.040) compared to late specialized pitchers. A strong, positive, statistically significant correlation (r(14) = 0.64, p < 0.01) was found between humerothoracic horizontal abduction and scapulothoracic internal rotation at ball release in all pitchers, regardless of specialization status. The statistically significant correlation expands upon previous research suggesting the scapular spine functions to align with the humerus during pitching. Two results supported our hypothesis that early specialization in baseball will be related to greater biomechanical variables during pitching, however, none of the results supported the hypotheses regarding injury history's impact on pitching biomechanics. Additional research should be completed evaluating the impact of sport specialization on sport biomechanics through greater subject recruitment, as well as recruiting a younger range of pitchers who are at the crossroads of specialization.
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653 $a Kinetics
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653 $a Shoulder biomechanics
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