Kinematic adjustments in the basketball free throw performed with a reduced hoop diameter rim
Article
Article Title | Kinematic adjustments in the basketball free throw performed with a reduced hoop diameter rim |
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ERA Journal ID | 40967 |
Article Category | Article |
Authors | Khlifa, Riadh (Author), Aouadi, Ridha (Author), Hermassi, Souhail (Author), Chelly, Mohamed (Author), Jlid, Chedly (Author) and Gabbett, Tim (Author) |
Journal Title | International Journal of Sports Science and Coaching |
Journal Citation | 7 (2), pp. 371-381 |
Number of Pages | 11 |
Year | 2012 |
Publisher | SAGE Publications Ltd |
Place of Publication | United Kingdom |
ISSN | 1747-9541 |
2048-397X | |
Digital Object Identifier (DOI) | https://doi.org/10.1260/1747-9541.7.2.371 |
Web Address (URL) | http://journals.sagepub.com/doi/pdf/10.1260/1747-9541.6.4.567 |
Abstract | The aim of this study was to investigate the effect of free throw shooting with a reduced diameter rim (diameter 0.35 m) upon the kinematics of basketball free throws. Ten basketball players (mean ± SD age 17.1 ± 0.7 years, height 1.85 ± 0.23 m, body mass 78.8 ± 5.8 kg) performed 8 clean successful free throws; 4 in a standard rim (diameter = 0.45 m), and 4 in a reduced diameter rim (diameter = 0.35 m). Ball release angle, ball release speed, ball release height and angles at release in elbow, shoulder, trunk, knee and ankle joints were determined for each subject. Statistical analysis showed significant increases in ball release angle, in ball release speed, in shoulder joint angle at release (p < 0.0001) and in ball release height (p < 0.01) when shooting in a reduced diameter rim. There were no other significant differences (p > 0.05) in any other determined parameter between the standard and reduced rim conditions. The increase of the minimum entry angle of the ball through the rim, caused by the 0.10 m reduction in diameter of the standard rim, resulted in subjects performing clean successful free throws with higher release angles and consequently with higher release speeds. The reduced hoop diameter rim can be used as an aid in training of young basketball players. Specifically, this constraint may act to increase ball release angle in basketball players with low percentage of successful free throws and when the principal cause of decreased free throws accuracy is due to a shot technique with low release angle. |
Keywords | ball release angle; basketball free throw; equipment modification; shooting accuracy |
ANZSRC Field of Research 2020 | 420799. Sports science and exercise not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Manouba, Tunisia |
Australian Catholic University | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q43y8/kinematic-adjustments-in-the-basketball-free-throw-performed-with-a-reduced-hoop-diameter-rim
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