Relationships between throwing mechanics and shoulder distraction in collegiate baseball pitchers

Werner, Sherry L., Guido, John A., Stewart, Gregory W., McNeice, Ryan P., VanDyke, Travis and Jones, Deryk G. (2007) Relationships between throwing mechanics and shoulder distraction in collegiate baseball pitchers. Journal of Shoulder and Elbow Surgery, 16 1: 37-42. doi:10.1016/j.jse.2006.05.007


Author Werner, Sherry L.
Guido, John A.
Stewart, Gregory W.
McNeice, Ryan P.
VanDyke, Travis
Jones, Deryk G.
Title Relationships between throwing mechanics and shoulder distraction in collegiate baseball pitchers
Journal name Journal of Shoulder and Elbow Surgery   Check publisher's open access policy
ISSN 1058-2746
1532-6500
Publication date 2007-01
Sub-type Article (original research)
DOI 10.1016/j.jse.2006.05.007
Volume 16
Issue 1
Start page 37
End page 42
Total pages 6
Place of publication Philadelphia, PA, United States
Publisher Mosby
Language eng
Abstract A distraction force occurs at the shoulder joint in all throwing motions. At the professional level, the relationship between this force and pitching mechanics has been explained. Three-dimensional, high-speed (240 Hz) video data were collected on fastballs from 48 collegiate baseball pitchers. Kinematic parameters related to pitching mechanics and resultant kinetics on the throwing arm elbow and shoulder joints were calculated. Multiple linear regression analysis was used to investigate the relationships between shoulder distraction and pitching mechanics. Shoulder distraction stress averaged 81% body weight for the collegiate pitchers. The mean ball velocity was 81 mph. Ten parameters of pitching mechanics accounted for 89% of the variance in shoulder distraction. Two of the variables (maximum shoulder abduction torque and elbow angle at release) previously shown to affect shoulder distraction in professional baseball pitchers appear to be important for collegiate pitchers as well. These data provide a scientific basis for clinicians, athletes, and coaches to establish methods to reduce distraction force at the shoulder joint through modification of pitching mechanics.
Keyword PLAYERS
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Medicine Publications
 
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Created: Mon, 14 Mar 2011, 09:19:28 EST