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Effects of Extended Pitch Count On Shoulder Kinematics In Intercollegiate Baseball Pitchers

Kohlmeyer, Elizabeth A. (2005) Effects of Extended Pitch Count On Shoulder Kinematics In Intercollegiate Baseball Pitchers. Master's Thesis, University of Pittsburgh. (Unpublished)

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Several studies have been conducted investigating the biomechanics of pitching [1-9]. These previous studies all report high compressive and distractive forces for shoulder external rotation, elbow flexion with a maximum varus torque, shoulder adduction torque, and elbow extension. These characteristics may be exacerbated with increased pitch counts. The purpose of this study was to quantify changes in shoulder and elbow mechanics as a result of increased pitch count, by evaluating joint angles, accelerations, and velocities. Subjects each completed one testing session. Intercollegiate baseball pitchers pitched a simulated game, with 17 pitches per inning over the course of 9-innings. Shoulder and elbow kinematic data were evaluated for a fastball every tenth pitch of the simulated pitch count for each subject. Our overall hypothesis was that as the pitch count increased, abnormal throwing mechanics would result.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Kohlmeyer, Elizabeth A.eak7@pitt.eduEAK7
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairMyers, Joseph
Committee MemberMcCrory, Jean
Committee MemberLephart, Scott
Date: 12 April 2005
Date Type: Completion
Defense Date: 8 April 2005
Approval Date: 12 April 2005
Submission Date: 8 April 2005
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: School of Health and Rehabilitation Sciences > Health and Rehabilitation Sciences
Degree: MS - Master of Science
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: baseball; pitching; Shoulder kinematics
Other ID:, etd-04082005-234016
Date Deposited: 10 Nov 2011 19:35
Last Modified: 15 Nov 2016 13:39


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