| Tennis forehand kinematics change as post-impact ball speed is altered. | |
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MedLine Citation:
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PMID: 22303791 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Peak joint angles and joint angular velocities were evaluated for varying speed forehands in an attempt to better understand what kinematic variables are most closely related to increases in post-impact ball velocity above 50% of maximal effort. High-speed video was used to measure three-dimensional motion for 12 highly skilled tennis players who performed forehands at three different post-impact ball speeds: fast (42.7 +/- 3.8 m/s), medium (32.1 +/- 2.9 m/s), and slow (21.4 +/- 2.0 m/s). Several dominant-side peak joint angles (prior to ball impact) increased as post-impact ball speed increased from slow to fast: wrist extension (16%), trunk rotation (28%), hip flexion (38%), knee flexion (27%), and dorsiflexion (5%). Between the aforementioned peak joint angles and ball impact, dominant-side peak angular velocities increased as ball speed increased from slow to fast: peak wrist flexion (118%), elbow flexion (176%), trunk rotation (99%), hip extension (143%), knee extension (56%), and plantarflexion (87%). Most kinematic variables changed as forehand ball speed changed; however, some variables changed more than others, indicating that range of motion and angular velocity for some joints may be more closely related to post-impact ball speed than for other joints. |
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Authors:
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Matthew K Seeley; Merrill D Funk; William Matthew Denning; Ronald L Hager; J Ty Hopkins |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Sports biomechanics / International Society of Biomechanics in Sports Volume: 10 ISSN: 1476-3141 ISO Abbreviation: Sports Biomech Publication Date: 2011 Nov |
Date Detail:
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Created Date: 2012-02-06 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101151352 Medline TA: Sports Biomech Country: Scotland |
Other Details:
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Languages: eng Pagination: 415-26 Citation Subset: IM |
Affiliation:
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Brigham Young University, Provo, UT 84602, USA. matt_seeley@byu.edu |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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